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  • The following term was not found in PubMed: Gazafroudi.
J Hazard Mater. 2018 Aug 15;356:1-8. doi: 10.1016/j.jhazmat.2018.05.037. Epub 2018 May 18.

Application of edible paraffin oil for cationic dye removal from water using emulsion liquid membrane.

Author information

1
Department of Chemical Engineering, Kermanshah University of Technology, 6715685420 Kermanshah, Iran. Electronic address: szereshki@kut.ac.ir.
2
Department of Chemical Engineering, Kermanshah University of Technology, 6715685420 Kermanshah, Iran.

Abstract

Using an emulsion liquid membrane based on edible oils is investigated for removing cationic dyes from aqueous solutions. There is a great potential for using edible oils in food industry extraction processes. The parameters affecting the stability of the emulsion and the extraction rate were studied. These parameters were the emulsification time, the stirring speed, the surfactant concentration, the internal phase concentration, the feed phase concentration, the volume ratio of internal phase to organic phase and the treat ratio. In order to stabilize the emulsion without using a carrier, edible paraffin oil and heptane are used at an 80:20 ratio. The optimum conditions for the extraction of methylene blue (MB), crystal violet and methyl violet (CV and MV) cationic dyes using edible paraffin oil as an environment friendly solvent are represented. A removal percentage of 95% was achieved for a mixture of dyes. The optimum concentration of sodium hydroxide in the internal phase, which results a stabile emulsion with a high stripping efficiency of 96%, was 0.04 M. An excellent membrane recovery was observed and the extraction of dyes did not decrease up to seven run cycles.

KEYWORDS:

Dye removal; Emulsion liquid membrane; Paraffin oil

PMID:
29800620
DOI:
10.1016/j.jhazmat.2018.05.037
[Indexed for MEDLINE]

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