Membrane and Water Treatment

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Removal of safranin from aqueous solution through liquid emulsion membrane

  • Lohiya, Roshni (Department of Chemical Engineering, Malaviya National Institute of Technology) ;
  • Goyal, Arihant (Department of Chemical Engineering, Malaviya National Institute of Technology) ;
  • Dohare, Rajeev Kumar (Department of Chemical Engineering, Malaviya National Institute of Technology) ;
  • Agarwal, Madhu (Department of Chemical Engineering, Malaviya National Institute of Technology) ;
  • Upadhyaya, Sushant (Department of Chemical Engineering, Malaviya National Institute of Technology)
  • Received : 2017.06.05
  • Accepted : 2019.04.27
  • Published : 2019.09.25
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Abstract

One of the real issues of the recent years is water contamination because of harmful synthetic dyes. Liquid Membranes (LM) resemble a promising alternative to the current separation processes, demonstrating various points of interest as far as effectiveness, selectivity, and operational expenses. The improvement of various Liquid Membranes designs has been a matter of examination by few researchers, particularly for the expulsion of dyes from aqueous solutions. The choice of organic surfactants plays an essential role in the efficiency of the dye removal. In LM design, the most significant step towards productivity is the decision of the surfactant type and its concentration. Liquid emulsion membrane (LEM) was used to remove safranin from aqueous solutions in which the emulsion was made with the help of D2EHPA as carrier, kerosene was used as a diluent and Span 80 (Sorbiton monooleate) was used as an emulsifying agent or surfactant. Various sorts of internal stages were utilized, to be specific sulphuric acid and sodium hydroxide. The impact of parameters influencing extraction efficiency such as pH of feed solution, concentrations of surfactant and emulsifying agent in membrane phase, volume ratio of internal phase to membrane phase, internal phase concentration, agitation speed and time of extraction were analyzed.

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References

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