Open AccessJournal Article
Studies on extraction of chromium(VI) from acidic solution by emulsion liquid membrane
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TLDR
In this article, an attempt has been made to extract Cr(VI) through emulsion liquid surfactant membrane (ELM) from it's acidic solution using alamine-336 and caustic soda as extractant and striping reagents respectively.Abstract:
High molecular weight amines, quaternary salts etc. have the potential of removing heavy metal ions including the toxic ones at low concentrations. In the present work an attempt has been made to extract Cr(VI) through emulsion liquid surfactant membrane (or, emulsion liquid membrane-ELM) from it's acidic solution using alamine-336 and caustic soda as extractant and striping reagents respectively. Around 97% extraction of Cr(VI) from aqueous solutions of potassium dichromate through batch experimentations have been achieved. Being crucial to the overall success of the ELM processes, experiments on emulsion stability have also been performed to arrive at a reasonably stable emulsion composition. Effect of various process parameters such as initial solute concentration, concentration of internal phase etc. as also that of pH on extraction of chromium have been investigated.read more
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Journal ArticleDOI
Emulsion liquid membrane for heavy metal removal: An overview on emulsion stabilization and destabilization
TL;DR: In this paper, various emulsification methods, such as mechanical agitation and ultrasound emulsion, as well as the emulsion formulation which includes composition, selection of agent, and operation parameters on emulsion stabilization were presented.
Journal ArticleDOI
Statistical optimization of process parameters for the extraction of chromium(VI) from pharmaceutical wastewater by emulsion liquid membrane.
TL;DR: In this paper, the authors used response surface methodology (RSM) to optimize the process parameters for the extraction of chromium from aqueous solution of waste sodium dichromate recovered from the pharmaceutical industry wastewater using emulsion liquid membrane technique.
Journal ArticleDOI
Application of response surface methodology for the extraction of chromium (VI) by emulsion liquid membrane
TL;DR: In this article, the authors used response surface methodology (RSM) to optimize the process parameters for the extraction of chromium from aqueous solution of waste sodium dichromate recovered from the pharmaceutical industry wastewater using emulsion liquid membrane technique.
Journal ArticleDOI
Optimization of process parameters for the extraction of chromium (VI) by emulsion liquid membrane using response surface methodology.
TL;DR: The emulsion liquid membrane technique was used for the extraction of hexavalent chromium ions from aqueous solution of waste sodium dichromate recovered from the pharmaceutical industry wastewater and the maximum chromium extraction was found to be 89.2% and 96.15% using Trioctyl amine and Aliquat-336, respectively.
Journal ArticleDOI
Hexavalent chromium recovery by liquid–liquid extraction with 2-octylaminopyridine from acidic chloride media and its sequential separation from other heavy toxic metal ions
TL;DR: In this article, a systematic study of extraction of chromium(VI) with 2-octylaminopyridine (2-OAP) in xylene at room temperature has been conducted.
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