nanofiltration
reverse osmosis
electroplating wastewater.
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The present work aimed to study the efficiency of nanofiltration (NF) and reverse
osmosis (RO) process for water recovery from electroplating wastewater and study the factors
affecting the performance of two membrane processes. Nanofiltration and reverse osmosis
membranes are made from polyamide as spiral wound module. The inorganic materials ZnCl2,
CuCl2.2H2O, NiCl2.6H2O and CrCl3.6H2O were used as feed solutions. The operating parameters
studied were: operating time, feed concentrations for heavy metal ions, operating pressure, feed
flow rate, feed temperature and feed pH. The experimental results showed, the permeate
concentration increased and water flux decreased with increase in time from 0 to 70 min. The
permeate concentrations incre
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