Premium
Separation of Hydrogen Sulfide from Wastewater by Emulsion Liquid Membranes
Author(s) -
Hu Y.,
Zhang N.,
Qu C.
Publication year - 2012
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100283
Subject(s) - hydrogen sulfide , emulsion , membrane , wastewater , chemical engineering , chemistry , chromatography , sulfide , materials science , waste management , organic chemistry , engineering , biochemistry , sulfur
Hydrogen sulfide was separated from highly saline wastewater by emulsion liquid membranes (ELMs). Such membranes consist of polyalkenyl succinimide as emulsifying agent, diethanolamine as carrier, kerosene as membrane, and sodium hydroxide as stripping solution. The effect of four surfactants on the stability of ELMs was investigated and every operational parameter was tested. The highest achievable separation efficiency was 99.73 % for a 100 mg L –1 solution. Obviously, the salinity of the external phase has a negligible effect on the separation of H 2 S using ELMs.