Coagulation and nano-filtration: a hybrid system for the removal of lower molecular weight organic compounds (LMWOC)

Wang, Yuanfang, Shu, Li, Jegatheesan, Veeriah, and Gao, Baoyu (2009) Coagulation and nano-filtration: a hybrid system for the removal of lower molecular weight organic compounds (LMWOC). Desalination and Water Treatment, 11 (1). pp. 23-31.

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Abstract

The removal of lower molecular weight organic compounds (LMWOC) from water is of increasing concern. While, nano- filtration (NF) is a good option, it removes only a fraction of the LMWOC. In this paper, NF experiments were conducted to remove oxalic acid and diuron in combination with coagulation using poly-aluminum chloride (PAC) as the coagulant. The results showed that this hybrid treatment system was effective in removing oxalic acid where almost a 100% removal effi ciency of oxalic acid was achieved. However, using PAC as coagulant to remove diuron from water was not effective. In order to improve the removal efficiency of diuron, 0.02 M NaCl was added to diuron and a 40% increase in the removal of diuron was achieved. Higher removal of diuron was achieved when the solution was treated with reverse osmosis (RO) when compared to the nano-filtration.

Item ID: 11201
Item Type: Article (Refereed Research - C1)
Keywords: coagulation; diuron; low molecular weight organic substances (LMWOC); nano-filtration; poly-aluminum chloride; reverse osmosis (RO)
ISSN: 1944-3986
Date Deposited: 27 May 2010 22:15
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies @ 100%
SEO Codes: 96 ENVIRONMENT > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified @ 100%
Citation Count from Web of Science Web of Science 3
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