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   arsenate removal from aqueous solutions using micellar-enhanced ultrafiltration  
   
نویسنده bahmani pegah ,maleki afshin ,rezaee reza ,mahvi amir hossein ,khamforoush mehrdad ,athar saeed dehestani ,daraei hiua ,gharibi fardin ,mckay gordon
منبع journal of environmental health science and engineering - 2019 - دوره : 17 - شماره : 1 - صفحه:115 -127
چکیده    In this study, arsenate (as-v) removal using micellar enhanced ultrafiltration (meuf) modified by cationic surfactants was studied by a dead-end polyacrylonitrile (pan) membrane apparatus. the uf membrane has been produced by a phase inversion process. the prepared membrane was characterized and analyzed for morphology and membrane properties. the influence of operating parameters such as initial concentrations of as-v, surfactants, ph, membrane thickness, and co-existing anions on the removal of as-v, surfactant rejection, and permeate flux have been studied. the experimental results show that from the two different cationic surfactants used the cpc (cetyl-pyridinium chloride) efficiency (91.7%) was higher than that of htab (hexadecyltrimethyl-ammonium bromide) (83.7%). the highest as-v removal was 100%, and was achieved using initial feed concentrations of 100–1000 μg/l, at ph 7 with a membrane thickness of 150 μm in a dead-end filtration system. this efficiency for as-v removal was similar to that obtained using a cross-flow system. nevertheless, this flux reduction was less than the reduction achieved in the dead-end filtration process. the pan fabricated membrane in comparison to the ro and nf processes selectively removed the arsenic and the anions, in the water taken from the well, and had no substantial effect on the cations.
کلیدواژه arsenate removal ,surfactant enhancement ,ultrafiltration ,polyacrylonitrile membrane ,micelle optimization
آدرس kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, tehran university of medical sciences, center for solid waste research, institute for environmental research, iran, university of kurdistan, faculty of engineering, iran, kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, kurdistan university of medical sciences, environmental health research center, research institute for health development, iran, hamad bin khalifa university, college of science and engineering, division of sustainable development, qatar
 
     
   
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