Paper Information

Journal:   WATER AND WASTEWATER   WINTER 2007 , Volume 17 , Number 4 (60); Page(s) 22 To 28.
 
Paper: 

EVALUATING THE PERFORMANCE OF REVERSE OSMOSIS IN ARSENIC REMOVAL FROM WATER

 
 
Author(s):  MOZAFARIAN KARIM*, MADAENI S.S., KHOUSHNOUDI MOHAMMAD
 
* SISTAN & BALOCHESTAN UNIVERSITY, ZAHEDAN
 
Abstract: 

Arsenic exists in compounds present in the Earth's cru1itin various concentrations. High concentrations of arsenic in drinking water may cause skin and lung cancers or other diseases. Unfortunately, in some urban and rural areas in Kurdistan Province (e.g., Delbaran), arsenic concentrations of above 70 ppb are observed in groundwater resources, which is higher than EPA standards. The objective of this study was to evaluate the effects of using membranes for arsenic removal from drinking water. To study the practical effects of different membranes on arsenic removal, five types of membranes, namely, PVD, TFC-SR, FT30, TFC-ULP, and BW30, were used. Based on the two parameters of effluent flux and arsenic removal efficiency (which was above %95), TFC-SR was selected as the best membrane. Atmospheric pressure, temperature, and pH were the parameters tested for this membrane to obtain an optimum atmospheric pressure of 10 bars and an optimum pH level of 7.57. Results also showed that higher temperatures increased both the effluent flux and arsenic removal.

 
Keyword(s): ARSENIC, REVERSE OSMOSIS, DRINKING WATER, REMOVAL
 
References: 
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