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Separation mechanism of mono- and divalent ions by low pressure reverse osmosis membrane

Ujang, Zaini (1997) Separation mechanism of mono- and divalent ions by low pressure reverse osmosis membrane. In: Regional Symposium on Chemical Engineering 1997 in conjunction with 13th Symposium of Malaysian Chemical Engineers, 13-15 October 1997, Hyatt Regency, Johor, Malaysia.

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Abstract

This paper describes an investigation on the rejection of the diavalent anions from ZnSO4 using LPROMs and to establish the effect of operating pressure, feed concentration and temperature on metal removal, than to compare with the monovalent anions, ZnCl2. A bench-scale spiral wound configuration of sulphonated polysulphone low pressure reverse osmosis membrane (LPROM) was used to remove heavy metals at various operating conditions, i.e. operating conditions, solute concentrations and temperature. The results show that the higher the operating pressure the greater will be the permeate flux for heavy metals from both mono- and divalent anions. At low operating pressure however, metals from the divalent anions give a higher permeate flux than did the monovalent anions. Permeate flux in both mono- and divalent anions is shown to be subsequently increased by a decrease of the concentration of feed solution. Regarding metal removal, metals from divalent anions were rejected more effectively than monovalent anions at all levels of feed concentration.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Charged membrane, heavy metals, low pressure reverse osmosis membrane, metal removal
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:4690
Deposited By: Norhani Jusoh
Deposited On:17 Dec 2007 03:00
Last Modified:01 Jun 2010 03:19

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