Author(s): Trina Dutta, Chiranjib Bhattacherjee, Sangita Bhattacherjee
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Vol.1 - Issue 9 (November - 2012)
Arsenic poisoning has become one of the major environmental problems in the world as millions of human beings have been exposed to excessive arsenic through contaminated ground water used for drinking. Arsenic is classified as Group 1 carcinogenic substance to humans based on powerful epidemiological evidence. In 2001 USEPA promulgated a rule for lowering the Maximum Contaminant Level (MCL) from 50?g/L to 10?g/L. Hence a continuous investigation of the available arsenic removal technology is essential to develop an economical yet effective method for removing arsenic from water. This paper offers an overview of the application of membrane technology in the water treatment research that have already been realized or that are suggested on the basis of bench scale or lab scale research. The performance of various membrane processes such as Reverse Osmosis (RO), Nanofiltration (NF), Ultrafiltration (UF), Microfiltration (MF) and Membrane Distillation (MD) in removal of arsenic from water have been presented. The influence of pH, membrane material, membrane types etc. on arsenic removal efficiency using membrane technologies have also been explored.
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