Arsenic removal from drinking water using thin film composite nanofiltration membrane

Arsenic removal from drinking water is a major problem in many parts of the world. Acute and chronic arsenic exposure through drinking water has been reported in many countries, especially Argentina, Bangladesh, India, Mexico, Mongolia, Thailand and Taiwan, where a large proportion of ground water i...

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Bibliographic Details
Published in:Desalination 2010-03, Vol.252 (1), p.75-80
Main Authors: Harisha, R.S., Hosamani, K.M., Keri, R.S., Nataraj, S.K., Aminabhavi, T.M.
Format: Article
Language:English
Subjects:
Applied sciences
Arsenates
Arsenic
Chemical engineering
Contamination
Drinking water
Drinking water and swimming-pool water. Desalination
Exact sciences and technology
Groundwater
Groundwaters
Membrane
Membrane separation (reverse osmosis, dialysis...)
Membranes
Nanofiltration
Natural water pollution
Pollution
Thin films
Water treatment
Water treatment and pollution
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Summary:Arsenic removal from drinking water is a major problem in many parts of the world. Acute and chronic arsenic exposure through drinking water has been reported in many countries, especially Argentina, Bangladesh, India, Mexico, Mongolia, Thailand and Taiwan, where a large proportion of ground water is contaminated with arsenic at levels from 100 to over 2000 μm/L. In this work, we have investigated the arsenic removal by the membrane-based nanofiltration (NF) technique. The results of this study demonstrate that arsenate ions removal by NF with a high rejection of 99.80% along with total dissolved solids (TDS) and other contaminates were achieved. Significant flux was retained at the end of each NF experiment with operation time of 180 min, which suggests that membranes were not affected by the fouling phenomenon during the process run. The feasibility of membranes for treating drinking water by varying feed pressure, pH and feed concentration was tested on the separation performance of the thin film composite NF membranes.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2009.10.022