Kinetic Study of Cd(II) Ions Extraction Using Trioctylamine as Carrier in Bulk Liquid Membrane (BLM)
Simultaneous extraction and stripping of Cd(II) ions from aqueous solution by using bulk liquid membrane (BLM) was explored. This study was aimed to identify the conditions to achieve maximum Cd(II) ions removal and the reaction kinetics was thoroughly analysed. The membrane phase was made by using...
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Published in | Journal of physical science Vol. 30; no. 2; pp. 157 - 168 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Pinang
Universiti Sains Malaysia Press
01.01.2019
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Abstract | Simultaneous extraction and stripping of Cd(II) ions from aqueous solution by using bulk liquid membrane (BLM) was explored. This study was aimed to identify the conditions to achieve maximum Cd(II) ions removal and the reaction kinetics was thoroughly analysed. The membrane phase was made by using trioctylamine (TOA) and kerosene, as carrier and diluent, respectively. Meanwhile, the feed phase contained the targeted solute (CdCl2) dissolved in a pH adjusted solution while ammonia was used as the stripping agent. To achieve maximum Cd(II) ions removal, the effect of carrier concentration, stirring speed as well as extraction time were studied. Experimental data obtained shows that 0.1 wt% TOA in kerosene, 400 rpm stirring speed and 4 h of extraction time resulted in highest removal of Cd(II) ions. Furthermore, it was identified that the extraction process across BLM prefers acidic condition (pH of 1). The capability of the system to extract Cd(II) ions from the feed phase was known by using dimensionless reduced concentration, Rf where the maximum removal of Cd(II) ions achieved was 0.0193 at the mentioned conditions. The reaction kinetics were investigated to identify the reaction rate constants for extraction reaction (k1) and stripping reaction (k2). The value of k1 and k2 were found to be 0.94 h-1 and 2.45 h-1, respectively. |
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AbstractList | Simultaneous extraction and stripping of Cd(II) ions from aqueous solution by using bulk liquid membrane (BLM) was explored. This study was aimed to identify the conditions to achieve maximum Cd(II) ions removal and the reaction kinetics was thoroughly analysed. The membrane phase was made by using trioctylamine (TOA) and kerosene, as carrier and diluent, respectively. Meanwhile, the feed phase contained the targeted solute (CdCl2) dissolved in a pH adjusted solution while ammonia was used as the stripping agent. To achieve maximum Cd(II) ions removal, the effect of carrier concentration, stirring speed as well as extraction time were studied. Experimental data obtained shows that 0.1 wt% TOA in kerosene, 400 rpm stirring speed and 4 h of extraction time resulted in highest removal of Cd(II) ions. Furthermore, it was identified that the extraction process across BLM prefers acidic condition (pH of 1). The capability of the system to extract Cd(II) ions from the feed phase was known by using dimensionless reduced concentration, Rf where the maximum removal of Cd(II) ions achieved was 0.0193 at the mentioned conditions. The reaction kinetics were investigated to identify the reaction rate constants for extraction reaction (k1) and stripping reaction (k2). The value of k1 and k2 were found to be 0.94 h-1 and 2.45 h-1, respectively. |
Author | Roseli, Effi Aidur Roza Azrai, Nur Athirah Ahmad, Abdul Latif Shah Buddin, Meor Muhammad Hafiz Wahet, Farhana |
Author_xml | – sequence: 1 givenname: Meor Muhammad Hafiz surname: Shah Buddin fullname: Shah Buddin, Meor Muhammad Hafiz – sequence: 2 givenname: Nur Athirah surname: Azrai fullname: Azrai, Nur Athirah – sequence: 3 givenname: Effi Aidur Roza surname: Roseli fullname: Roseli, Effi Aidur Roza – sequence: 4 givenname: Farhana surname: Wahet fullname: Wahet, Farhana – sequence: 5 givenname: Abdul Latif surname: Ahmad fullname: Ahmad, Abdul Latif |
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SubjectTerms | Ammonia Aqueous solutions Carrier density Interfaces Kerosene Kinetics Liquid membrane extraction Liquid membranes Rate constants Reaction kinetics Stirring Stripping Trioctylamine |
Title | Kinetic Study of Cd(II) Ions Extraction Using Trioctylamine as Carrier in Bulk Liquid Membrane (BLM) |
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