Extraction of cadmium from solutions containing various heavy metal ions by Amberlite LA-2

Recep Ali Kumbasar 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.2

In present study, selective extraction of cadmium from acidic leach solutions, containing various heavy metal ions, by emulsion liquid membrane (ELM) is studied. For this reason, the zinc plant copper cake was leached with sulfuric acid and main acidic leach solution containing Zn(II), Cu(II), Fe(II), Cd(II), Co(II) and Ni(II) ions was obtained. After Zn(II), Cu(II), Fe(II) and Cd(II) ions in the acidic leach solution were separated, the important parameters influencing the extent of cadmium extraction were investigated and optimum conditions were determined. Cadmium extraction was influenced by number of parameters like initial metal ion concentration, mixing speed, phase ratio, extractant concentration, surfactant concentration, the stripping solution type and concentration, and the feed solution acid concentration. The optimumvalues of parameter abovementioned were used and cadmium in the acidic leach solution containing 650 mg Cd/L, 365 mg Co/L, 535 mg Ni/L, and 1260 mg Zn/L was almost completely extracted within 10 min. The results showed that it is possible to extract 99% of cadmium after 10 min contact time by using ELM from aqueous solutions, containing Fe(II), Al(III), Cu(II), Zn(II), Pb(II), Co(II) and Ni(II) ions, at the optimum operating conditions.

Selective extraction and concentration of chromium(VI) from acidic solutions containing various metal ions through emulsion liquid membranes using Amberlite LA-2

Recep Ali Kumbasar 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.5

Chromium(VI) is a very harmful metal, highly toxic and carcinogenic in nature. Its separation from industrial effluents is of primordial importance. An extensive study on selective extraction and concentration of chromium(VI) from the acidic solutions containing various metal ions using an emulsion liquid membrane (ELM) technique is presented. The ELM consists of Amberlite LA-2 as an extractant, commercial kerosene as organic solvent, ECA 4360J as a surfactant and 0.5 M ammonium carbonate solution as stripping phase. The study has highlighted the importance and influence of membrane composition for maximizing the extraction of chromium(VI). For this reason, effects of various parameters such as chromium(VI) concentration in the acidic solution, mixing speed, type and concentration of stripping solution, type and acid concentration of the acidic solution, extractant and surfactant concentrations, phase ratio and treatment ratio were studied and optimum conditions were determined. The results showed that it is possible to extract 99% of chromium(VI) from the acidic solution containing Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) ions, at the optimum conditions. 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Selective transport of cobalt (II) from ammoniacal solutions containing cobalt (II) and nickel (II) by emulsion liquid membranes using 8-hydroxyquinoline

Recep Ali Kumbasar 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.1

The selective transport of cobalt (II) from ammoniacal solutions containing nickel (II) and cobalt (II) by emulsion liquid membranes (ELMs) using 8-hydroxyquinoline (8-HQ) as extractant has been presented. Membrane solution consists of a diluent (kerosene), a surfactant (ECA 4360J), and an extractant (8-HQ). Very dilute sulphuric solution buffered at pH 5.0 has been used as a stripping solution. The ammoniacal feed solution pH was adjusted to 9.0 with hydrochloric acid. The important variables governing the permeation of cobalt (II) have been studied. These variables are membrane composition, pH of the feed solution, cobalt (II) and nickel (II) concentrations of the feed solution, stirring speed, surfactant concentration, extractant concentration, complexing agent concentration and pH of the stripping solution, and phase ratio. After the optimum conditions had been determined, it was possible to selectively transport 95.0% of cobalt (II) from ammoniacal feed solution containing Co2+ and Ni2+ ions. The separation factors of cobalt (II) with respect to nickel (II), based on initial feed concentration, have experimentally found to be of as high as 31 for equimolar Co(II)–Ni(II) feed solution.

Extraction and concentration of cobalt from acidic leach solutions containing Co–Ni by emulsion liquid membrane using TOA as extractant

Recep Ali Kumbasar 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.3

The present investigation deals with carrier-facilitated membrane transport of cobalt from acidic leach solutions containing cobalt and nickel by emulsion liquid membrane (ELM). In this work, the zinc plant electrolyte purification was leached with hydrochloric acid and main acidic leach solution containing Zn(II), Cu(II), Fe(II), Cd(II), Co(II) and Ni(II) ions was obtained. After Zn(II), Cu(II), Fe(II) and Cd(II) ions in the acidic leach solution were separated, the important parameters influencing the extent of cobalt extraction were investigated and optimumconditions were determined. Cobalt transport was influenced by number of parameters like cobalt initial concentration, mixing speed, extractant concentration,surfactant concentration, the stripping solution type and concentration, and the feed solution acid concentration. After the optimum parameter values were determined, cobalt from the acidic leach solution containing 100 mg Co/L and 200 mg Ni/L was almost completely extracted within 10 min. The results showed that it is possible to extract 99% of cobalt by using ELM from the acidic leach solutions containing Zn(II), Cu(II), Fe(II), Cd(II), Co(II) and Ni(II) ions at the optimum operating conditions. 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Selective extraction of cobalt from strong acidic solutions containing cobalt and nickel through emulsion liquid membrane using TIOA as carrier

Recep Ali Kumbasar 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6

The present investigation deals with carrier-facilitated membrane transport of cobalt from strong acidic leach solutions containing cobalt and nickel by emulsion liquid membrane (ELM) using triisooctylamine (TIOA) as carrier. In this work, the zinc plant copper cake was leached with hydrochloric acid solution and main acidic leach solution containing various ions was obtained. After various ions in the acidic leach solution were separated, optimum conditions were determined. The results showed that it is possible to extract 99% of cobalt using ELM from strong acidic leach solutions, containing cobalt and nickel ions, at the optimum conditions.

Extraction of Ni(II) from spent Cr–Ni electroplating bath solutions using LIX 63 and 2BDA as carriers by emulsion liquid membrane technique

Volkan Eyupoglu,Recep Ali Kumbasar 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

In the present study, the synergistic extraction of Ni(II) from spent Cr–Ni electroplating bath solutions(SEBS) was determined using 5,8-diethyl-7-hydroxydodecan-6-one oxime(LIX 63) and 2-bromodecanoicacid(2BDA) by emulsion liquid membranes(ELM)s. The effect of membrane and aqueous phaseproperties on Ni(II) transport was experimentally investigated. Ni(II) extraction was obtained to behigher than 98.5% in the optimum conditions within 6 min. The higher separation factor (bNi/Cr) wasobtained as 677. In addition, Ni(II) extraction kinetics depends on LIX63 because the extraction kineticsof LIX63 is slower than 2BDA. Therefore, we have determined that 2BDA acts as a synergist in presentextraction system.

Synergistic and selective extraction of Cd2+ from acidic solution containing Cd2+, Co2+, Ni2+ by triisooctylamine (TIOA) and tributyl phosphate (TBP)

Ebru Sonmez,Fatih Sonmez,Recep Ali Kumbasar,Volkan Eyupoglu 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.4

Selective and synergistic extraction of cadmium from acidic iodine solutions containing Cd2+, Co2+ and Ni2+using solvent extraction (SX) technique is presented in this study. The study has highlighted the importance of main and synergistic extractants composition. The mixtures have evident synergistic effects on Cd2+ with a synergistic enhancement factor of 2.22. The various experimental parameters were studied to determine the optimum extraction and stripping conditions of Cd2+. Under optimum conditions, the maximum extraction efficiency (99.7%) was achieved when using 1.5% (v/v) TIOA and 0.5%(v/v) TBP in dichloromethane within 5 min. Extracted Cd2+ was stripped effectively from the organic phase using 2.0 mol/L NaOH solution.