Bahmani, Pegah; Maleki, Afshin; Rezaee, Reza; Mahvi, Amir Hossein; Khamforoush, Mehrdad; Dehestani Athar, Saeed; Daraei, Hiua; Gharibi, Fardin; McKay, Gordon published the artcile< Arsenate removal from aqueous solutions using micellar-enhanced ultrafiltration>, Quality Control of 123-03-5, the main research area is arsenate wastewater treatment micellar enhanced ultrafiltration; Arsenate removal; Micelle optimization; Polyacrylonitrile membrane; Surfactant enhancement; Ultrafiltration.
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 morphol. 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 exptl. 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 100-1000μg/L, at pH 7 with a membrane thickness of 150μm 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.
Journal of Environmental Health Science and Engineering published new progress about Cationic surfactants. 123-03-5 belongs to class pyridine-derivatives, and the molecular formula is C21H38ClN, Quality Control of 123-03-5.