ESTIMATION OF EXTRACTION BEHAVIOR OF Co(II) AND Ni(II) BY McCABE-THIELE ANALYSIS
|
|
- Edwin Haynes
- 5 years ago
- Views:
Transcription
1 Journal of Engineering Science and Technology Special Issue on SOMCHE 214 & RSCE 214 Conference, January (215) 7-77 School of Engineering, Taylor s University ESTIMATION OF EXTRACTION BEHAVIOR OF Co(II) AND Ni(II) BY McCABE-THIELE ANALYSIS K. MORIYAMA, N. MURAYAMA, J. SHIBATA * Department of Chemical, Energy and Environmental Engineering, Faculty of Engineering, Kansai University, Japan *Corresponding Author: shibata@kansai-u.ac.jp Abstract Industrial solvent extraction for the purpose of separation and recovery of the metal ions has been carried out in the countercurrent multistage process. The determination of the operating conditions is performed by McCabe-Thiele analysis for the equilibrium extraction isotherm obtained in extraction experiments. In such an analysis, it is possible to analyze the condition of the extraction of metal ions. For example, however, in the case of mixed solution of Co(II) and Ni(II), the analysis is very complicated. This is because under the conditions where the extraction of Co(II) takes place, the stripping of Ni(II) happens at the same time. In considering the separation of the metal ions in the multicomponent system, it is better to establish the analytical method to provide an important guideline for actual operation. In this study, the conditions where Co(II) is extracted and Ni(II) is stripped are considered. The extraction behavior of Co(II) and stripping behavior of Ni(II) could be estimated from the extraction isotherms. From the estimated results of each metal ion, the separation performance of each metal ion is evaluated by using purity as an indicator. By varying the phase ratio and stage number, the extraction and stripping behavior of the respective metal ions could be reasonably estimated Keywords: Solvent extraction, McCabe-Thiele analysis, Separation behavior, Acidic extractant, Cobalt and nickel 1. Introduction Solvent extraction is one of the methods to separate and purify inorganic compounds and metal ions [1, 2]. Solvent extraction in an industrial operation is mainly carried out by countercurrent multistage process from the viewpoint of separability and efficiency. It is possible to determine the operating conditions of 7
2 Estimation of Extraction Behavior of Co(II) and Ni(II) by McCabe-Thiele Analysis 71 the single component system by McCabe-Thiele analysis using the equilibrium extraction isotherm obtained in extraction experiments [3-5]. However, the separation of multi-component system has not been discussed. This is because the stripping of Ni(II) happens under the conditions where the extraction of Co(II) takes place. Since industrial operations are the multicomponent system, this type of study provides an important guideline for the separation of metal ions [6, 7]. In this study, the conditions where Co(II) is extracted and Ni(II) is stripped are considered. The separation performance between Co 2+ and Ni 2+ is examined by using McCabe-Thiele analysis. 2. Experiment 2.1. Preparation of aqueous phase and organic phase A stock solution of Co(II) or Ni(II) was prepared by dissolving CoSO 4 7H 2 O or NiSO 4 6H 2 O in pure water respectively. The concentration of both metal ions was.5-.5mol/dm 3, and the ph was adjusted by using NaOH and H 2 SO 4. In the condition shown above, the obtained solutions were used as a feed aqueous solution. PC-88A (2-Ethylhexyl phosphonic acid mono-2-ethylhexyl) diluted to 1mol/dm 3 with kerosene was used as a feed organic solution Solvent extraction The both feed solutions of 15cm 3 were put in a centrifuge tube with a glass stopper, and it was kept in a constant temperature bath at 25 for 1 minutes. The tube was shaken for 2 minutes at 3 spm by a vertical shaker, and then it was centrifuged. After keeping it in the constant temperature bath at 25 for 1 minutes, equilibrium ph of the aqueous phase was measured. The residual metal ion concentration in the aqueous phase was determined by an atomic absorption spectrophotometer (AA-7, Shimadzu Co., Ltd. Japan). The equilibrium metal concentration in the organic phase was determined by the difference between the equilibrium metal concentration in the aqueous phase and the metal concentration in the initial aqueous solution Estimation of extraction behavior of Co(II) and Ni(II) The extraction isotherms of Co 2+ and Ni 2+ were prepared by using extraction equilibrium data. A schematic diagram of countercurrent multistage extraction is shown in Fig. 1. Mass balance equation for the extraction system is given by the following equation [3-5]. Ax 1 Oy Ax (1) n 1 Oy n where A and O are the flow rate of aqueous phase and organic phase, x and y indicate the metal concentrations in the aqueous phase and organic phase, respectively. The following equation is obtained from Eq. (1), n 1 x1 y y A / O x (2) n Journal of Engineering Science and Technology Special Issue 1 1/215
3 72 K. Moriyama et al. Equilibrium ph and the metal concentration in the inlet aqueous phase X in (x n+1 ) and organic phase Y in (y ) are given as an initial condition. The metal concentrations in the outlet aqueous phase X out (x 1 ) and organic phase Y out (y n ) are determined by providing the setting value of recovery of Co 2+ and Ni 2+. The extraction behavior of Co 2+ and stripping behavior of Ni 2+ could be estimated from the extraction isotherm and the operating line expressed by Eq. (2). Purity is applied as an indicator of the separation of Co 2+ and Ni 2+, and it is calculated from the following equations: Purity Co Purity 2 2 Y Co 2 2 YoutCo YoutNi 2 2 X Ni Ni 2 2 X Co X Ni out out (3) out (4) out y (Y in ) y 1 y Organic(O) y 3 y n-1 y n (Y out ) Aqueous(A) x 2 x 1 (X out ) x 3 x 4 x n x n+1 (Y in ) Fig. 1. Countercurrent Multistage Extraction Extraction with acidic extractant Extraction reaction of divalent metal ions with acidic extractant is represented by the following equation [8], 2 aq. M 2HR org., org. Haq. MR2 2 (5) where HR is the extractant molecule, and MR 2 means the extracted species, the subscripts of aq. and org. indicate species in the organic phase and aqueous phase. Extraction equilibrium constant K ex is defined as, K ex D MR2 org. H 2 M HR 2 aq. 2 aq. (6) org. Distribution ratio, D, of the metal ions is expressed as follows by definition: MR 2 org. 2 M aq. By combining the Eqs. (6) and (7), the next equation can be obtained,. log D 2pH log K 2log (8) ex HR org When the metal ion concentration in the initial aqueous phase is extremely low compared with the extractant concentration, HR org. can be regarded as a constant value. This means that the relationship between equilibrium ph and logd shows a straight line with slope of two [9, 1]. (7) Journal of Engineering Science and Technology Special Issue 1 1/215
4 logd Conc. in org. phase [mol/dm 3 ] Estimation of Extraction Behavior of Co(II) and Ni(II) by McCabe-Thiele Analysis Results and Discussion 3.1. Extraction isotherms of Co(II) and Ni(II) Figure 2 shows the relationship between equilibrium ph and logd. In any initial metal ion concentration, the linear relationship is obtained. The slope is close to valence of Co 2+ in the area of low metal ion concentrations. As the metal ion concentration is increased, the slope becomes smaller. This is because the extractant concentration before and after extraction is not regarded to be a constant when the concentration of metal ions in the initial aqueous phase increases. From the distribution ratio at each ph, the equilibrium concentration of metal ions can be determined. The extraction isotherms of Co 2+ and Ni 2+ are shown in Fig. 3. The metal concentration in organic phase increases with increasing the equilibrium ph. The isotherm of Co 2+ was higher than that of Ni 2+ at each equilibrium ph. As shown in Eq. (5), the extraction reaction of the metal ions with an acidic extractant, such as PC-88A, is based on a cation-exchange reaction between the metal ions in aqueous phase and protons in the extractant. The ratio of dissociated extractant is increased with an increasse in ph, and extraction of metal ions proceeds. By comparing the extraction behavior of the two metal ions, it is understood that Co 2+ is more extracted than Ni Co 2+ ph=4.5 ph=4. ph=3.5 Ni 2+ ph=4.5 ph=4. ph=3.5-1 C M,initial [mol/dm 3 ] :.5 :.25 : Equilibrium ph Fig.2 Relationship between equilibrium Fig. 2. Relationship between Equilibrium ph and logd for Cobalt Extraction Conc. in aq. phase [mol/dm 3 ] Fig.3 Extraction isotherm of Co 2+ and Ni 2+ Fig. 3. Extraction Isotherm of Co 2+ and Ni Extraction behavior of Co(II) and Ni(II) The conditions where Co 2+ is extracted and Ni 2+ is stripped are considered. The extraction behavior of Co 2+ and stripping behavior of Ni 2+ could be estimated from the extraction isotherms. Figure 4 shows the extraction isotherm and the behavior of Co 2+ in countercurrent multistage extraction. The operation line is constructed according to slope of unity, 1% recovery of Co 2+ and the stage number of three. The stripping behavior of Ni 2+ in a countercurrent multistage operation is shown in Fig. 5. The recovery of Ni 2+ is 66.1% by three stage stripping. In order to obtain a high recovery, it is necessary to lower the metal concentration in the outlet organic phase (Y out ) and increase the metal ion concentration in the outlet aqueous phase (X out ). At this time, since the operating line approaches the isotherm, stage number is increased. Journal of Engineering Science and Technology Special Issue 1 1/215
5 Stage number [-] Purity of metal ion [%] Conc. in org. phase [mol/dm 3 ] Conc. in org. phase [mol/dm 3 ] 74 K. Moriyama et al X in ;.1mol/dm 3, Y in ; mol/dm 3 A/O=1, Eq. ph; 4,.3.2 X in ; mol/dm 3, Y in ;.2mol/dm 3 A/O=1, Eq. ph; 4 (X out, Y in ).1.5 (X in, Y out ) Stage number; 3 Recovery; 1% (X out, Y in ) Conc. in aq. phase [mol/dm 3 ] Fig.4 McCabe-Thiele analysis for Fig. 4. McCabe-Thiele analysis for Countercurrent Extraction of Co (X in, Y out ) Stage number;3 Recovery; 66.1% Conc. in aq. phase [mol/dm 3 ] Fig. 5. McCabe-Thiele Analysis for Countercurrent Stripping of Ni Extraction behavior of Co(II) and Ni(II) in the various conditions The extraction behavior of Co 2+ and stripping behavior of Ni 2+ are estimated by changing the stage numbers. Figure 6 shows the relationship between recovery of metal ions and stage number. In order to recover 1% of Co 2+, three stages are required. Even if 1 stage operation is applied, the recovery of Ni 2+ increases only up to 81%. When the stage number is increased to infinity, the recovery of Ni 2+ reaches asymptotically to 87%. As shown in Fig. 5, when varying the metal ion concentration in the outlet organic phase (Y out ) and the metal ion concentration in the outlet aqueous phase (X out ), the operating line is in contact with the isotherm. The recovery obtained at this time becomes the maximum in the phase ratio of 1. The relationship between stage number and purity of metal ions is shown in Fig. 7. With increasing the stage number, the purity of both metal ions is increased. The purity of Co 2+ and Ni 2+ are 93.6% and 1% by three stage operation, respectively. This is because even if the stage number is increased, all Ni 2+ ions are not stripped in the phase ratio of 1 as shown in Fig Co 2+ [mol/dm 3 ]; X in =.1,Y in = Ni 2+ [mol/dm 3 ]; X in =,Y in =.2 A/O; 1, Eq. ph; 4 ; Co 2+ in org. phase ; Ni 2+ in aq. phase Co 2+ [mol/dm 3 ]; X in =.1,Y in = Ni 2+ [mol/dm 3 ]; X in =,Y in =.2 A/O; 1, Eq. ph; 4 ; Co 2+ in org. phase ; Ni 2+ in aq. phase Recovery [%] Fig.6 Relationship beween recovery of Fig. 6. Relationship between Recovery of Metal Ions and Stage Number Stage number [-] Fig.7 Relationship beween stage number Fig. 7. Relationship between Stage Number and Purity of Metal Ions. Journal of Engineering Science and Technology Special Issue 1 1/215
6 Recovery [%] Purity of metal ion [%] Estimation of Extraction Behavior of Co(II) and Ni(II) by McCabe-Thiele Analysis 75 In order to improve the recovery of Ni 2+, extraction and stripping behavior of Co 2+ and Ni 2+ are evaluated by varying the phase ratio (A/O). Figure 8 shows the relationship between phase ratio and recovery of metal ions. The recovery of Co 2+ in the organic phase is reduced with an increase in the phase ratio. This is why the reduction of the volume of organic phase leads to the insufficient extent amount required for Co 2+ extraction. In the case of the phase ratio of unity, the recovery of Co 2+ is 1%. On the other hand, the recovery of Ni 2+ increases with an increase in the phase ratio. The number of protons needed for stripping increases with increasing the volume of the aqueous phase. When phase ratio is 1, the recovery of Ni 2+ becomes 99.6%. Figure 9 shows the relationship between phase ratio and purity of metal ions. The purity of Co 2+ is increased with an increase in phase ratio since the stripping reaction of Ni 2+ in the organic phase proceeds. On the other hand, the purity of Ni 2+ is reduced with an increase in the phase ratio Co 2+ [mol/dm 3 ]; X in =.1,Y in = Ni 2+ [mol/dm 3 ]; X in =,Y in =.2 Eq. ph; 4 Stage number; 3 8 ; Co 2+ in org. phase ; Ni 2+ in aq. phase ; Co 2+ in org. phase ; Ni 2+ in aq. phase Phase ratio (A/O) [-] Fig.8 Relationship beween phase ratio Fig. 8. Relationship between Phase Ratio and Recovery of Metal Ions Phase ratio (A/O) [-] Fig.9 Relationship beween phase ratio Fig. 9. Relationship between Phase Ratio and Purity of Metal Ions Separation condition and separation performance Table 1 shows the separation performance (stage number 3) of Co 2+ and Ni 2+ estimated from Figs The target value of purity of both metal ions is set to be more than 95.% in stage number of three. When the phase ratio is 1.6, the purity of Ni 2+ and Co 2+ is 95.4% and 97.6%. Table 2 shows the separation performance of Co 2+ and Ni 2+ when the target value of recovery and purity of both metal ions is set to be more than 99.9%. When the phase ratio is less than 2., the recovery of Co 2+ is increased and on the other hand, the recovery of Ni 2+ is decreased. The purity of Co 2+ is decreased because the amount of Ni 2+ contained in the organic phase increases. When the phase ratio is more than 2., the recovery of Co 2+ is decreased, while the recovery of Ni 2+ is increased. The purity of Co 2+ is increased because the amount of Ni 2+ contained in the organic phase decreases. Thus, the behavior of extraction and stripping of both metal ions affect the purity of each metal ion. When the stage number is three, the recovery of Co 2+ and Ni 2+ is 95% and 87% at phase ratio of A/O=2.. These recoveries are increased with increasing the stage number and 24 stage operations give 99.9% recovery and purity for both metal ions. Journal of Engineering Science and Technology Special Issue 1 1/215
7 76 K. Moriyama et al. Table 1. Separation Performance of Co 2+ and Ni 2+. Co 2+ [mol/dm 3 ] Ni 2+ [mol/dm 3 ] Recovery [%] Purity [%] Aq. phase (X out ) Ni 2+ =8.5 Ni 2+ =95.4 Org. phase (Y out ) Co 2+ =99.2 Co 2+ =97.6 <Extraction of Co 2+ > [mol/dm 3 ] Stage number; 3, Phase ratio; 1.6 Y (Y in )= Y 1 = Y 2 = Org. 1 2 X 1 (X out )= X X 3 = = Y 3 (Y out )= Aq. X 4 (X in )= Table 2. Separation Performance of Co 2+ and Ni 2+. Co 2+ [mol/dm 3 ] Ni 2+ [mol/dm 3 ] Recovery [%] Purity [%] Aq. phase (X out ) Ni 2+ =99.9 Ni 2+ =1 Org. phase (Y out ) Co 2+ =99.9 Co 2+ =99.9 Stage number; 24, Phase ratio; 2. <Extraction of Co 2+ > Y 1 = Y 23 =.195 Y (Y in )= Y 2 = Y 24 (Y out )=.2 Org Aq. X 1 (X out )= X 3 = X 25 (X in )=.1 X 2 = Y 24 =.974 <Stripping of Ni 2+ > Y 1 =.14 Y 23 = Y (Y in )=.2 Y 2 =.958 Y 24 (Y out )=2 1-5 Org Aq. X 1 (X out )=.999 X 3 =.478 X 25 (X in )= X 2 =.699 Y 24 = Conclusion The separation performance of Co 2+ and Ni 2+ was estimated by McCabe-Thiele analysis using extraction isotherms. The separation process of Co 2+ and Ni 2+ could be evaluated by changing the operating conditions such as stage number and phase ratio in countercurrent multi-stage extraction. The information for the separation and purification of the two metal components was obtained with a smaller amount of experiments. References 1. Nishimura, S. (1989). Solvent extraction technology-recent applications and features. Journal of MMIJ, 15(2), Shibata, J. (22). Solvent extraction of precious metals. Journal of the Surface Finishing Society of Japan, 53(1), Journal of Engineering Science and Technology Special Issue 1 1/215
8 Estimation of Extraction Behavior of Co(II) and Ni(II) by McCabe-Thiele Analysis Tamakoshi, H.; and Shibata, J. (1992). Computer simulation for multistage countercurrent extraction process of MgCl 2 from sea water. Resources Processing, 39(4), Shibata, J.; Ohtomo, M.; and Tanaka, M. (1993). Simulation of countercurrent multistage extraction process for recovery of titanium. Kagaku Kogaku Ronbunshu, 19, Shibata, J.; and Kurihara, Y. (1992). A study on separation and purification process of high purity titanium oxide. Kagaku Kogaku Ronbunshu, 18(4), Tanaka, M.; Koyama, K.; and Shibata, J. (1997) Steady-state local linearization of the countercurrent multistage extraction process for metal ions. Industrial and Engineering Chemistry Research, 36(1), Tanaka, M.; Koyama, K.; and Shibata, J. (1998). Role of the extraction equilibrium constant in the countercurrent multistage solvent extraction-stripping process for metal ions. Industrial and Engineering Chemistry Research, 37(5), Shibata, J.; Sano, M.; Nishimura, Y.; and Sawai, H. (1987). Extraction of metal ions from ammoniacal solution with various extractants. J. Japan Inst. Metals, 51(8), Parhi, P.K.; Padhan, E.; Palai, A.K.; Sarangi, K.; Nathsarma, K.C. and Park, K.H. (211). Separation of Co (II) and Ni (II) from the mixed sulphate/chloride solution using NaPC-88A. Desalination, 267(2-3), Panigrahi, S.; Parhi, P.K.; Nathsarma, K.C.; and Sarangi, K. (29). Processing of manganese nodule leach liquor for the separation of cobalt and nickel using PC88A. Minerals and Metallurgical Processing, 26(3), Journal of Engineering Science and Technology Special Issue 1 1/215
Solvent extraction of cobalt and zinc from sulphate solutions using phosphoric, phosphonic and phosphinic acids
The European Journal of Mineral Processing and Environmental Protection Solvent extraction of cobalt and zinc from sulphate solutions using phosphoric, phosphonic and phosphinic acids K.C. Nathsarma* and
More information宮崎大学学術情報リポジトリ. Extraction Rate of Nickel with 5- Title Dodecylsalicylaldoxime in a Vibro-M. SANA, Takashi; SHIOMORI, Koichiro; Author(s) Yoshinobu
宮崎大学学術情報リポジトリ Extraction Rate of Nickel with 5- Title Dodecylsalicylaldoxime in a Vibro-M SANA, Takashi; SHIOMORI, Koichiro; Author(s) Yoshinobu Separation and purification Citation 165 technol URL http://hdl.handle.net/10458/784
More informationSOLVENT EXTRACTION OF RARE EARTH METAL BY A CONTINUOUS STIRRED VESSEL
Journal of Engineering Science and Technology Special Issue on SOMCHE 2014 & RSCE 2014 Conference, January (2015) 87-96 School of Engineering, Taylor s University SOLVENT EXTRACTION OF RARE EARTH METAL
More informationEG Recovery of Cd(II), Co(II) and Ni(II) from Chloride Medium by Solvent Extraction Using CYANEX 923 and CYANEX 272
EG0800277 Recovery of Cd(II), Co(II) and Ni(II) from Chloride Medium by Solvent Extraction Using CYANEX 923 and CYANEX 272 I. M. Ahmed, S. I. El Dessouky, Y.A. El-Nadi, E.A. Saad * and J.A. Daoud ** Hot
More informationSolvent Extraction of Gold from Chloride Solution by Tri-Butyl Phosphate (TBP)
23 rd International Mining Congress & Exhibition of Turkey 16-19 April 2013 ANTALYA Solvent Extraction of Gold from Chloride Solution by Tri-Butyl Phosphate (TBP) N. Sadeghi, E. K. Alamdari, D. H. Fatmehsari
More informationEXTRACTION OF URANIUM (VI) FROM NITRIC ACID AND NITRATE SOLUTIONS BY TRIBUTYLPHOSPHATE/KEROSENE
PERIODICA POLYTECHNICA SER. CHEM. ENG. VOL. 49, NO. 1, PP. 3 18 (5) EXTRACTION OF URANIUM (VI) FROM NITRIC ACID AND NITRATE SOLUTIONS BY TRIBUTYLPHOSPHATE/KEROSENE Jamal STAS, Ajaj DAHDOUH and Habib SHLEWIT
More informationSelective Recovery of Indium from Acid Sulfate Media with Solvent Impregnated Resin of Bis(4-cyclohexylcyclohexyl)phosphoric Acid as an Extractant
Ion Exchange Letters 2 (2009) 22-26 iel.vscht.cz Selective Recovery of Indium from Acid Sulfate Media with Solvent Impregnated Resin of Bis(4-cyclohexylcyclohexyl)phosphoric Acid as an Extractant T. Nakamura,
More informationExtraction Behavior of Gold from Hydrochloric Acid Solutions with Ionic Liquids as Extractants
Solvent Extraction Research and Development, Japan, Vol. 19, 63 68 (212) Extraction Behavior of Gold from Hydrochloric Acid Solutions with Ionic Liquids as Extractants Takahiko KAKOI 1 *, Mayumi YOSHIYAMA
More informationExtraction of uranium from acidic media with a novel synergistic mixture of di-nonyl phenyl phosphoric acid and tri-n-octyl phosphine oxide
Indian Journal of Chemical Technology Vol. 12, November 2005, pp. 708-712 Extraction of uranium from acidic media with a novel synergistic mixture of di-nonyl phenyl phosphoric acid and tri-n-octyl phosphine
More informationSYNERGISTIC SOLVENT EXTRACTION OF Co(II) AND Li(I) FROM AQUEOUS CHLORIDE SOLUTIONS WITH MIXTURE OF CYANEX 272 AND TBP
Physicochem. Probl. Miner. Process. 52(1), 2016, 353 364 www.minproc.pwr.wroc.pl/journal/ Physicochemical Problems of Mineral Processing ISSN 1643-1049 (print) ISSN 2084-4735 (online) Received June 12,
More informationISEC The 21st International Solvent Extraction Conference
Unique Separation Based on Extraction Kinetics Using a Liquid-liquid Countercurrent Centrifugal Contactor with Taylor Vortices Masahiko NAKASE 1,*, Yuto MATSUZAWA 2 and Kenji TAKESHITA 2 1 Aqueous Separations
More informationA Comparative Study of Ionic Liquids and a Conventional Organic Solvent on the Extraction of Rare-earth Ions with TOPO
Solvent Extraction Research and Development, Japan, Vol. 20, 225 232 (2013) Notes A Comparative Study of Ionic Liquids and a Conventional Organic Solvent on the Extraction of Rare-earth Ions with TOPO
More informationSolvent Extraction Separation of Co(II) from Synthetic Leaching Sulfate Solution of Nickel Laterite Ore with High Magnesium Content
Materials Transactions, Vol. 52, No. 6 (2) pp. 2 to 25 #2 The Japan Institute of Metals Solvent Extraction Separation of (II) from Synthetic Leaching Sulfate Solution of ckel Laterite Ore with High Magnesium
More informationERT 313 BIOSEPARATION ENGINEERING EXTRACTION. Prepared by: Miss Hairul Nazirah Abdul Halim
ERT 313 BIOSEPARATION ENGINEERING EXTRACTION Prepared by: Miss Hairul Nazirah Abdul Halim Definition of Extraction Liquid-Liquid extraction is a mass transfer operation in which a liquid solution (the
More informationInternational Journal of Pharma and Bio Sciences V1(2)2010 SOLVENT EXTRACTION OF CHROMIUM (VI) FROM MINERAL ACID SOLUTIONS BY TRIBUTYL AMINE
A.V.L.N.S.H. HARI HARAN * AND D.MURALI KRISHNA * Department of Chemistry Gitam Institute of Technology, GITAM UNIVERSITY VISAKHAPATNAM-530 045. INDIA Corresponding author ahharan@rediffmail.com ABSTRACT
More informationPelagia Research Library
Available online at www.pelagiaresearchlibrary.com Der Chemica Sinica, 2011, 2(6):204-211 ISSN: 0976-8505 CODEN (USA) CSHIA5 Solvent Extraction of tetravalent titanium from chloride and nitrate solutions
More informationExtraction Behaviour of Cu 2+ Ions with Used Cooking Oil-Based Organic Solvent
International Proceedings of Chemical, Biological and Environmental Engineering, V0l. 96 (2016) DOI: 10.7763/IPCBEE. 2016. V96. 4 Extraction Behaviour of Cu 2+ Ions with Used Cooking Oil-Based Organic
More informationSolid-liquid separation after liquid-liquid extraction
17 Solid-liquid separation after liquid-liquid extraction Distribution of oxine (a-hydroxyquinoline) and copper oxinate between naphthalene and aqueous phase at 9 C asatada SATAKE* (Received Sept. 26,
More informationEquilibrium constant
Equilibrium constant Equilibrium constant Many reactions that occur in nature are reversible and do not proceed to completion. They come to an equilibrium where the net velocity = 0 The velocity of forward
More informationChapter 4. Reactions in Aqueous Solution
Chapter 4. Reactions in Aqueous Solution 4.1 General Properties of Aqueous Solutions A solution is a homogeneous mixture of two or more substances. A solution is made when one substance (the solute) is
More informationRecovery of boron from wastewater using 2, 2, 4-trimethyl-1,3-pentanediol in carbon tetrachloride
Indian Journal of Chemical Technology Vol. 15, September 2008, pp. 483-487 Recovery of boron from wastewater using 2, 2, 4-trimethyl-1,3-pentanediol in carbon tetrachloride Debasish Mohapatra 1*, Gautam
More informationIron Catalyzed Chlorpromazine-Hydrogen
ANALYTICAL SCIENCES APRIL 1996, VOL. 12 243 A Kinetic Study of the Peroxide Reaction and Iron Catalyzed Chlorpromazine-Hydrogen Its Analytical Implications TakaShi TOMIYASU, Hayao SAKAMOTO and Norinobu
More informationExtraction of rhodium from platinum solutions in presence of aluminum chloride with tri-octylphosphine oxide in toluene
Available online at www.pelagiaresearchlibrary.com Advances in Applied Science Research, 2014, 5(4):100-106 ISSN: 0976-8610 CODEN (USA): AASRFC Extraction of rhodium from platinum solutions in presence
More informationPhysicochemical Processes
Lecture 3 Physicochemical Processes Physicochemical Processes Air stripping Carbon adsorption Steam stripping Chemical oxidation Supercritical fluids Membrane processes 1 1. Air Stripping A mass transfer
More informationRecovery of Nicotinic Acid from Aqueous Solution using Reactive Extraction with Tri-n-Octyl Phosphine Oxide (TOPO) in Kerosene
Recovery of Nicotinic Acid from Aqueous Solution using Reactive Extraction with Tri-n-Octyl Phosphine Oxide (TOPO) in erosene Sushil umar 1, aran Gupta 2, and B V Babu* Birla Institute of Technology and
More information5.1 Module 1: Rates, Equilibrium and ph
5.1 Module 1: Rates, Equilibrium and ph 5.1.1 How Fast? The rate of reaction is defined as the change in concentration of a substance in unit time Its usual unit is mol dm 3 s 1 When a graph of concentration
More informationMd. Sohrab Hossain*,, Md. Fazlul Bari**, Samsul Baharin Jamaludin**, Kamarudin Hussin**, and Mohd. Omar Ab. Kadir*
Korean J. Chem. Eng., 9(5), 668-675 (01) DOI: 10.1007/s11814-011-00-4 INVITED REVIEW PAPER Selective extraction, separation and recovery of Cu(II) in presence of Zn(II) and Ni(II) from leach liquor of
More informationCHAPTER CHROMATOGRAPHIC METHODS OF SEPARATIONS
Islamic University in Madinah Department of Chemistry CHAPTER - ----- CHROMATOGRAPHIC METHODS OF SEPARATIONS Prepared By Dr. Khalid Ahmad Shadid Chemistry Department Islamic University in Madinah TRADITIONAL
More informationBehavior of Platinum(IV) and Palladium(II) Acids with Trioctylphosphine Oxide
377 Solvent Extraction as Chlorocomplex Behavior of Platinum(IV) and Palladium(II) Acids with Trioctylphosphine Oxide Yuko HASECAWA*, Isao KoBAYASHI* and Akihiko OKUDA** *Department of Chemistry, Science
More informationUNIT 3 ELECTROCHEMISTRY
95414101 UNIT 3 ELECTROCHEMISTRY 1 MARK QUESTIONS Q. 1. Which solution will allow greater conductance of electricity, 1 M NaCl at 93 K or 1 M NaCl at 33 K and why? Ans. 1 M NaCl at 33 K as the ionic mobilities
More informationNEODECANOIC ACID AS EXTRACTANT OF SELECTED NON-FERROUS METALS
Physicochem. Probl. Miner. Process. 51(2), 215, 435 445 www.minproc.pwr.wroc.pl/journal/ Physicochemical Problems of Mineral Processing ISSN 1643-149 (print) ISSN 284-4735 (online) Received May 9, 214;
More informationCHAPTER 8 CHEMICAL EQUILIBRIUM TEXT BOOK EXERCISE Q1. Multiple Choice questions (i) For which system does the equilibrium constant, K c has units of (concentration) -1 (a) N 2 + 3H 2 2NH 3 (b) H 2 + I
More informationISEC The 21st International Solvent Extraction Conference
Zinc(II) and Iron(III) Extraction From Chloride Media Using Pyridinecarboximidamides as Extractant Aleksandra WOJCIECHOWSKA*, Irmina WOJCIECHOWSKA, Karolina WIESZCZYCKA Poznan University of Technology,
More informationSolvent extraction of manganese from sulphate-acetato medium with Cyanex 272
Indian Journal of Chemical Technology Vol. 18, September 2011, pp. 372-380 Solvent extraction of manganese from sulphate-acetato medium with Cyanex 272 R K Biswas * & M S Rahman Department of Applied Chemistry
More informationAIM To verify Beer - Lambert s law and to determine the dissociation constant (Ka) of methyl red, Spectrophotometrically.
C 141(Expt. No. ) NAME : ROLL No. : SIGNATURE : BATCH : DATE : VERIFICATION OF BEER - LAMBERT S LAW & DETERMINATION OF DISSOCIATION CONSTANT (Ka) OF METHYLRED, SPECTROPHOTOMETRICALLY AIM To verify Beer
More informationA is capable of donating one or more H+
Slide 1 / 48 1 According to the Arrhenius concept, an acid is a substance that. A is capable of donating one or more H+ B C D E causes an increase in the concentration of H+ in aqueous solutions can accept
More information(i) State the time taken for all the peroxodisulfate ions to react. [1] (ii) Suggest a method of measuring the rate of this reaction.
9 (i) State the time taken for all the peroxodisulfate ions to react. [1].............................. minutes (ii) Suggest a method of measuring the rate of this reaction. [1]............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
More informationSynthesis of MnO 2 nanowires and its adsorption property to lead ion in water
Available online www.jocpr.com Journal of Chemical and Pharmaceutical Research, 14, 6(4):270-275 Research Article ISSN : 0975-7384 CODEN(USA) : JCPRC5 Synthesis of MnO 2 nanowires and its adsorption property
More informationEXTRACTION OF H 3 PO 4 FROM WET PHOSPHORIC ACID BY nc4 nc7 ALCOHOLS
PERIODICA POLYTECHNICA SER. CHEM. ENG. VOL. 45, NO. 2, PP. 139 148 (2001) EXTRACTION OF H 3 PO 4 FROM WET PHOSPHORIC ACID BY nc4 nc7 ALCOHOLS S. KHORFAN, O.SHINO and A. WAHOUD Atomic Energy Commission
More informationChapter 2. Materials and Methods
Chapter 2 Materials and Methods 2. Materials and Methods This chapter describes the chemicals, reagents and instruments used for carrying out this study. A brief discussion of the methods used for the
More informationExtraction of Lithium from Salt Lake Brine with Tributyl Phosphate and an Ionic Liquid. Takuma SEKIMOTO, Syouhei NISHIHAMA and Kazuharu YOSHIZUKA*
Solvent Extraction Research and Development, Japan, Vol. 25, No 2, 117 123 (218) Notes Extraction of thium from Salt Lake rine with Tributyl Phosphate and an Ionic quid Takuma SEIMOTO, Syouhei NISHIHAMA
More informationLesmahagow High School AHChemistry Inorganic and Physical Chemistry Lesmahagow High School CfE Advanced Higher Chemistry
Lesmahagow High School CfE Advanced Higher Chemistry Unit 1 Inorganic and Physical Chemistry Chemical Equilibrium 1 Dynamic Equilibrium Revision Dynamic equilibrium happens in a closed system when the
More informationExtraction of Iron(III) from Aqueous Sulfate Solutions by Primene JMT
Extraction of Iron(III) from Aqueous Sulfate Solutions by Primene JMT a D. SCHRÖTTEROVÁ and b P. NEKOVÁŘ a Department of Inorganic Technology, Institute of Chemical Technology, Prague, CZ-166 28 Prague
More informationSolvent Extraction of Iron(III) with Tri Methyl Amine from Mineral Acid Solutions
http://www.e-journals.in Chemical Science Transactions DOI:10.7598/cst2014.894 2014, 3(4), 1427-1431 RESEARCH ARTICLE Solvent Extraction of Iron(III) with Tri Methyl Amine from Mineral Acid Solutions A.V.L.N.S.H.
More informationSTUDIES ON THE SORPTION OF PHOSPHATE ON SOME SOILS OF INDIA SATURATED WITH DIFFERENT CATIONS
I.J.S.N., VOL. 2(2) 211: 327-333 ISSN 2229 6441 STUDIES ON THE SORPTION OF PHOSPHATE ON SOME SOILS OF INDIA SATURATED WITH DIFFERENT CATIONS Bansal, O. P. Chemistry Department, D.S. College, Aligarh-221
More informationg. Looking at the equation, one can conclude that H 2 O has accepted a proton from HONH 3 HONH 3
Chapter 14 Acids and Bases I. Bronsted Lowry Acids and Bases a. According to Brønsted- Lowry, an acid is a proton donor and a base is a proton acceptor. Therefore, in an acid- base reaction, a proton (H
More informationCHAPTER 4 AQUEOUS REACTIONS AND SOLUTION STOICHIOMETRY: Electrolyte-a compound that conducts electricity in the melt or in solution (water)
CHAPTER 4 AQUEOUS REACTIONS AND SOLUTION STOICHIOMETRY: Electrolyte-a compound that conducts electricity in the melt or in solution (water) STRONG ELEC. 100% Dissoc. WEAK ELEC..1-10% Dissoc. NON ELEC 0%
More informationBeer's- Lambert Law and Standard Curves. BCH 312 [Practical]
Beer's- Lambert Law and Standard Curves BCH 312 [Practical] Spectrophotometer: Spectrophotometer can be used to measure the amount of light absorbed or transmitted by a solution. It consist of two parts:
More informationSEPARATION BY BARRIER
SEPARATION BY BARRIER SEPARATION BY BARRIER Phase 1 Feed Barrier Phase 2 Separation by barrier uses a barrier which restricts and/or enhances the movement of certain chemical species with respect to other
More informationIntroduction to Work in Laboratory
INSTITUTE OF MEDICAL BIOCHEMISTRY AND LABORATORY MEDICINE Introduction to Work in Measuring volumes, filtration, centrifugation, solubility, separation Practical in Medical Biochemistry General Medicine
More informationSupporting Information. Integration of accessible secondary metal sites into MOFs for H 2 S removal
Electronic Supplementary Material (ESI) for Inorganic Chemistry Frontiers. This journal is the Partner Organisations 2014 Supporting Information Integration of accessible secondary metal sites into MOFs
More informationINFLUENCE OF TEMPERATURE AND ESTIMATION OF ENTHALPY AND ENTROPY FOR REACTIVE EXTRACTION OF LACTIC ACID
Int. J. Chem. Sci.: (3), 22, 39-36 ISSN 972-768X www.sadgurupublications.com INFLUENCE OF TEMPERATURE AND ESTIMATION OF ENTHALPY AND ENTROPY FOR REACTIVE EXTRACTION OF LACTIC ACID HUSSEIN SALIH HUSSEIN
More informationUnit-8 Equilibrium. Rate of reaction: Consider the following chemical reactions:
Unit-8 Equilibrium Rate of reaction: Consider the following chemical reactions: 1. The solution of sodium chloride and silver nitrate when mixed, there is an instantaneous formation of a precipitate of
More informationSolvent Extraction Research and Development, Japan, Vol. 23, No 2, (2016)
Solvent Extraction Research and Development, Japan, Vol. 23, No 2, 175 180 (2016) Effect of Quaternary Ammonium Salts on the Extraction of 1,3-Propanediol with Phenylboronic Acid Michiaki MATSUMOTO*, Kikuko
More informationLimiting Ionic Partial Molar Volumes of R 4 N + and Ī in Aqueous Methanol at K
http://www.e-journals.in Chemical Science Transactions DOI:10.7598/cst2014.874 2014, 3(4), 1366-1371 RESEARCH ARTICLE Limiting Ionic Partial Molar Volumes of R 4 N + and Ī in Aqueous Methanol at 303.15
More information9/24/12. Chemistry Second Edition Julia Burdge. Reactions in Aqueous Solutions
Chemistry Second Edition Julia Burdge 4 Reactions in Aqueous Solutions Copyright (c) The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1 4 Reactions in Aqueous Solutions
More informationUnit 6. Chemical Reactions
Unit 6 Chemical Reactions Physical Vs. Chemical Change Physical changes= changes in form (phase), but not the identity of the substance ex: H 2 O (s) H 2 O (l) (* Starts as H 2 O and ends as H 2 O) Chemical
More informationAQA Chemistry A-level
AQA Chemistry A-level Required Practical 4 Carry out simple test-tube reactions to identify cations and anions + Cations: Group 2 ions, NH 4 Test for group 2 ions: sodium hydroxide -3 1. Place 10 drops
More informationStatistical Modeling and Differential Evolution Optimization of Reactive Extraction of Glycolic Acid
International Conference on Biology, Environment and Chemistry IPCBEE vol.4 () ()IACSIT Press, Singapoore Statistical Modeling and Differential Evolution Optimization of Reactive Extraction of Glycolic
More informationRecovery of oxalic acid from mother-liquor containing hydrochloric acid and cobalt by solvent extraction with P350
Recovery of oxalic acid from mother-liquor containing hydrochloric acid and cobalt by solvent extraction with P350 TIAN Qing-hua( ), GUO Xue-yi( ), LI Zhi-hai( ) School of Metallurgical Science and Engineering,
More informationPhysical Changes and Chemical Reactions
Physical Changes and Chemical Reactions Gezahegn Chaka, Ph.D., and Sudha Madhugiri, Ph.D., Collin College Department of Chemistry Objectives Introduction To observe physical and chemical changes. To identify
More informationAqueous Balance: Equilibrium
Activity 4 Aqueous Balance: Equilibrium GOALS In this activity you will: Determine ph and understand its meaning. Learn the basic principles behind equilibrium and the law of mass action. Calculate a solubility
More informationSolvent Extraction Research and Development, Japan, Vol. 23, No 2, (2016)
Solvent Extraction Research and Development, Japan, Vol. 23, No 2, 181 186 (216) Formaldehyde Removal by Using Solid Phase Extraction with an Imination Reaction on an Amine Type Trident Molecule-Impregnated
More informationMass Transfer Operations I Prof. Bishnupada Mandal Department of Chemical Engineering Indian Institute of Technology, Guwahati
Mass Transfer Operations I Prof. Bishnupada Mandal Department of Chemical Engineering Indian Institute of Technology, Guwahati Module - 5 Distillation Lecture - 6 Fractional Distillation: McCabe Thiele
More informationAcid Base Equilibria
Acid Base Equilibria Acid Ionization, also known as acid dissociation, is the process in where an acid reacts with water to produce a hydrogen ion and the conjugate base ion. HC 2 H 3 O 2(aq) H + (aq)
More informationExtraction of Sb (III) and Co (II) from Hydrochloric Acid Solutions by N,N-Dioctyl-1-Octanamine in Methyl Isobutyl Ketone
Available online at www.pelagiaresearchlibrary.com Advances in Applied Science Research, 13, 4(1):182-187 ISSN: 976-86 CODEN (USA): AASRFC Extraction of (III) and (II) from Hydrochloric Acid Solutions
More informationChem 222 #20 Ch 23, Ch26, Ch11 Mar 29, 2005
Chem 222 #20 Ch 23, Ch26, Ch11 Mar 29, 2005 Announcement Your midterm will be returned probably this week. Reports for Exp 13, 15 are due this W/R. Reports for KH 5-1 is due on next M/T. Today we will
More informationTHE pka OF PROTONATED CARBOXYLIC ACIDS. T. S. SORENSEN Department of Chemistry, University of Alberta, Calgary, Alberta
THE pka OF PROTONATED a,@-unsaturated CARBOXYLIC ACIDS T. S. SORENSEN Department of Chemistry, University of Alberta, Calgary, Alberta Received October 20, 1963 ABSTRACT The pk, of three, protonated a,o-unsaturated
More informationLab 2. Go Their Separate Ways: Separation of an Acid, Base, and Neutral Substance by Acid-Base Extraction
Lab 2. Go Their Separate Ways: Separation of an Acid, Base, and Neutral Substance by Acid-Base Extraction How can I use an acid-base reaction to separate an acid-base-neutral mixture? Objectives 1. use
More informationCHAPTER - 2 EXPERIMENTAL TECHNIQUE. Potassium permanganate has been used for. oxidation of many systems. Oxidations by permanganate
42 CHAPTER - 2 EXPERIMENTAL TECHNIQUE Potassium permanganate has been used for oxidation of many systems. Oxidations by permanganate generally takes place very fast because it is a strong oxidising agent.
More informationStructured Process Energy-Exergy-Flow Diagram and Ideality Index for Analysis of Energy Transformation in Chemical Processes (Part 1)
Structured Process Energy-Exergy-Flow Diagram and Ideality Index for Analysis of Energy Transformation in Chemical Processes (Part 1) Application to Unit Processes Hiroshi OAKI*, Masaru ISHIDA* and Tsuneo
More informationSolid-Liquid Extraction
Chapter (10) Solid-Liquid Extraction (( Leaching )) Leaching: is the separation of a solute from solid mixture by dissolving it in a liquid phase. Leaching occurs in two steps: 1. Contacting solvent and
More informationEXPERIMENT 7 Precipitation and Complex Formation
EXPERIMENT 7 Precipitation and Complex Formation Introduction Precipitation is the formation of a solid in a solution as the result of either a chemical reaction, or supersaturating a solution with a salt
More information12 Nicarbazin Nicarbazin (4,4 -dinitro carbanilid (DNC) and 2-hydroxy-4,6-dimethyl pyrimidine (HDP))
12 Nicarbazin Nicarbazin (4,4 -dinitro carbanilid (DNC) and 2-hydroxy-4,6-dimethyl pyrimidine (HDP)) O - O - O N + O N + O N NH N H N H O 1,3-bis(4-nitrophenyl)urea, 4,6-dimethyl-1H-pyrimidin-2-one C 13
More informationStrong Acids and Bases C020
Strong Acids and Bases C020 Strong Acids and Bases 1 Before discussing acids and bases examine the concept of chemical equilibrium At reaction is at equilibrium when it is proceeding forward and backwards
More informationAvailable online at ScienceDirect. Energy Procedia 89 (2016 )
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 89 (2016 ) 366 372 CoE on Sustainable Energy System (Thai-Japan), Faculty of Engineering, Rajamangala University of Technology Thanyaburi
More informationReactive Extraction of L (+) Tartaric Acid by Amberlite LA-2 in Different Solvents
http://www.e-journals.net ISSN: 973-4945; CODEN ECJHAO E- Chemistry 211, 8(S1), S59-S515 Reactive Extraction of L (+) Tartaric Acid by Amberlite LA-2 in Different Solvents İ. İNCİ, Y. S. AŞÇI and A. F.
More informationTrioctylphosphine Oxide. Citation University (1975), 52(5-6):
Nonaqueous Liquid-Liquid Extraction TitleCadmium from Ethylene Glycol Soluti Trioctylphosphine Oxide Author(s) Matsui, Masakazu; Aoki, Tôru; Inoue Tsunenobu Citation Bulletin of the Institute for Chemi
More informationConservation The Law of Conservation of Matter states that matter cannot be created or destroyed in ordinary chemical reactions. This means that no
Chemical Reactions Conservation The Law of Conservation of Matter states that matter cannot be created or destroyed in ordinary chemical reactions. This means that no atoms can be lost or gained. This
More informationJournal of Chemical and Pharmaceutical Research
Available on line www.jocpr.com Journal of Chemical and Pharmaceutical Research ISSN No: 0975-7384 CODEN(USA): JCPRC5 J. Chem. Pharm. Res., 2010, 2(4):257-265 Selective Extraction of 7-aminodeacetoxycephalosporanic
More informationLecture Presentation. Chapter 16. Acid Base Equilibria. John D. Bookstaver St. Charles Community College Cottleville, MO Pearson Education, Inc.
Lecture Presentation Chapter 16 Acid Base Equilibria John D. Bookstaver St. Charles Community College Cottleville, MO Some Definitions Arrhenius An acid is a substance that, when dissolved in water, increases
More informationAnalysis of Performance of Packed Columns
Analysis of Performance of Packed Columns There are two packed column experiments in the Unit Operations lab: Liquid-Liquid Extraction (LLE) and Gas Absorption (GA). In both of these experiments, a solute
More informationEXTENDED SMOKER S EQUATION FOR CALCULATING NUMBER OF STAGES IN DISTILLATION
EXTENDED SMOKER S EQUATION FOR CALCULATING NUMBER OF STAGES IN DISTILLATION Santanu Bandyopadhyay Energy Systems Engineering and Department of Mechanical Engineering, Indian Institute of Technology, Bombay,
More informationRecap: Introduction 12/1/2015. EVE 402 Air Pollution Generation and Control. Adsorption
EVE 402 Air Pollution Generation and Control Chapter #6 Lectures Adsorption Recap: Solubility: the extent of absorption into the bulk liquid after the gas has diffused through the interface An internal
More informationComparision studies on Adsorbants for removal of Hardness from Water by using newly Prepared Zeolite
INTERNATIONAL JOURNAL OF ADVANCES IN PHARMACY, BIOLOGY AND CHEMISTRY Research Article Comparision studies on Adsorbants for removal of Hardness from Water by using newly Prepared Zeolite R. Viswanath Goud
More informationDevelopment of a New Process for the Selective Extraction of Uranium from Phosphate Rocks
Development of a New Process for the Selective Extraction of Uranium from Phosphate Rocks URAM 23 27 June 2014 G. Bernier, M. Miguirditchian, V. Pacary, C. Balaguer, M. Bertrand, B. Camès, X. Hérès (Radiochemistry
More informationGroundwater chemistry
Read: Ch. 3, sections 1, 2, 3, 5, 7, 9; Ch. 7, sections 2, 3 PART 14 Groundwater chemistry Introduction Matter present in water can be divided into three categories: (1) Suspended solids (finest among
More informationAcid-Base Strength. Chapter 6. Monday, November 2, 2015
Acid-Base Strength Chapter 6 Monday, November 2, 2015 Acid-Base Strength We ve seen that the reactivity of acids and bases can be viewed through the HSAB Model or the EC Model. Both of these models try
More informationFurther studies on phenol removal from aqueous solutions by solvent extraction
Further studies on phenol removal from aqueous solutions by solvent extraction R. M.Abdelmonem, M. A. Hashem and A. A. Mohmed Chem. Eng Dept., Faculry of Engineering, El-Minia niversity, El-Minia, Egypt
More informationSection 1 Chemical Changes
Chemical Reactions Chemical Reactions Section1 Chemical Reactions slides 3-20 Section 2 Chemical Equations slides 21-34 Section 3 Classifying Chemical Reactions slides 35-46 Sections 4 Chemical Reactions
More informationDownloaded from
I.I.T.Foundation - XI Chemistry MCQ #10 Time: 45 min Student's Name: Roll No.: Full Marks: 90 Solutions I. MCQ - Choose Appropriate Alternative 1. Molarity is the number of moles of a solute dissolved
More informationAdsorption of Tributyl Phosphate on Silica Gel
211 Adsorption of Tributyl Phosphate on Silica Gel V.F. Sazonova*, M.A. Kojemyak and O.V. Perlova Faculty of Chemistry, Odessa I.I. Mechnikov National University, 2, Dvoryanskaya St., Odessa 65026, Ukraine.
More informationThe Pharmaceutical and Chemical Journal, 2016, 3(2): Research Article
, 216, 3(2):243-253 Available online www.tpcj.org Research Article ISSN: 2349-792 CODEN(USA): PCJHBA Extraction of Uranium from the Raffinate of Egyptian Phosphoric Acid Purification Using Aliquat336 Extractant
More informationRate of Reaction. Introduction
5 Rate of Reaction Introduction This experiment will allow you to study the effects of concentration, temperature, and catalysts on a reaction rate. The reaction whose rate you will study is the oxidation
More information5072 CHEMISTRY (NEW PAPERS WITH SPA) BASIC TECHNIQUES 5067 CHEMISTRY (NEW PAPERS WITH PRACTICAL EXAM) BASIC TECHNIQUES
5072 CHEMISTRY (NEW PAPERS WITH SPA) BASIC TECHNIQUES 5067 CHEMISTRY (NEW PAPERS WITH PRACTICAL EXAM) BASIC TECHNIQUES LEARNING OUTCOMES a) Be able to write formulae of simple compounds b) Be able to write
More informationCHEM 254 EXPERIMENT 2 Critical point determination for SF 6
CHEM 254 EXPERIMENT 2 Critical point determination for SF 6 The equation of state of a gas defines the relationship between the pressure, temperature and volume of the gas. For ideal gases the equation
More informationAdsorption of Uranium by Chitin Phosphate and Chitosan Phosphate*
Agric. Biol Chem., 45 (10), 2191-2195, 1981 2191 Adsorption of Uranium by Chitin Phosphate and Chitosan Phosphate* Takashi Sakaguchi, Takao Horikoshi and Akira Nakajima Department of Chemistry, Miyazaki
More information5.111 Lecture Summary #22 Wednesday, October 31, 2014
5.111 Lecture Summary #22 Wednesday, October 31, 2014 Reading for Today: Sections 11.13, 11.18-11.19, 12.1-12.3 in 5 th ed. (10.13, 10.18-10.19, 11.1-11.3 in 4 th ed.) Reading for Lecture #23: Sections
More informationLiquid-liquid Equilibrium Extraction of Aromatic Compounds from Model Hydrocarbon Mixtures for Separation of Cracked Oils
Solvent Extraction Research and Development, Japan, Vol. 20, 169 174 (2013) Liquid-liquid Equilibrium Extraction of Aromatic Compounds from Model Hydrocarbon Mixtures for Separation of Cracked Oils Hiroaki
More informationCHEM 254 EXPERIMENT 9. Chemical Equilibrium-Colorimetric determination of equilibrium constant of a weak acid
CHEM 254 EXPERIMENT 9 Chemical Equilibrium-Colorimetric determination of equilibrium constant of a weak acid For a weak acid that can only partly dissociate the equilibrium constant is related to activities
More information