화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.65, 325-333, September, 2018
DOI10.1016/j.jiec.2018.05.002  Export Citation
Spent caustic treatment using hydrophobic room temperatures ionic liquids
Muhammad Ashraf Sabri1, 2, Taleb Hassan Ibrahim1, 2, †, Mustafa Ibrahim Khamis3, 2, Paul Nancarrow1, 2, and Muhammad Faheem Hassan1, 4
  • 1Department of Chemical Engineering, United Arab Emirates
  • 2American University of Sharjah, P.O. Box 26666, Sharjah, United Arab Emirates
  • 3Department of Chemistry, Biology and Environmental Sciences, United Arab Emirates
  • 4MNS-University of Engineering and Technology, Multan, Pakistan
E-mail:
Two hydrophobic room temperature ionic liquid (IL), tetrahexylammonium dihexyl-sulfosuccinate (IL1) and trioctylmethylammonium salicylate (IL2), have been employed for the treatment of spent caustic (SC) wastewater by liquid.liquid extraction at room temperature and pressure. The concentrations of phenols, thiols and benzaldehyde were reduced to below their detection limits and the chemical oxygen demand (COD) levels were reduced from 64166 ± 3880 mg/l to 63.0 ± 9.0 mg/l. This represents an outstanding reduction in pollutant and COD levels to well below the discharge limits for industrial effluents as set by U.S.A. Environmental Protection Agency (EPA) regulations, thus eliminating the need for any further treatment before discharge.
Keywords:Spent caustic treatment;Phenol removal;Organic removal;Ionic liquid;Liquid.liquid extraction
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