Arsenic removal by a membrane hybrid filtration system

被引：72

作者：

Nguyen, V. T. ^{[1
]}

Vigneswaran, S. ^{[1
]}

Ngo, H. H. ^{[1
]}

Shon, H. K. ^{[1
]}

Kandasamy, J. ^{[1
]}

机构：

[1] Univ Technol Sydney, Fac Engn, Broadway, NSW 2007, Australia

来源：

DESALINATION | 2009年 / 236卷 / 1-3期

基金：

澳大利亚研究理事会;

关键词：

Arsenic; Nanometer-scale zero valent iron; Membrane; Drinking water treatment; GROUNDWATER;

D O I：

10.1016/j.desal.2007.10.088

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Arsenic is a toxic semi-metallic element that can be fatal to human health. Membrane filtration can remove a number of contaminants from water, including arsenic. Removal of arsenic by membrane filtration is highly dependent on the species of arsenic and the properties of the membrane. The performance of the nanofilter is better for removing As(V) than As(III). About 57% of As(III) and 81% of As(V) was removed from 500 mu g/L arsenic solutions by nanofiltration (NTR729HF, Nitto Denko Corp., Japan) of 700 molecular weight (M\V) cutoff. The removal efficiency of microfiltration (MF) was much lower than that of nanofiltration (NF) due to its larger pore size. By comparison only 37% of As(III) and 40% of As(V) were removed by microfiltration (PVA membrane, Pure-Envitech, Korea). However, the removal efficiency of microfiltration was increased dramatically when a small amount of nanoscale zero valent iron (nZVI) was added. The removal efficiency by MF increased up to 90% with As(V) and 84% with As(III) when an amount of 0.1 g/L of nZVI was added into the arsenic solution.

引用

页码：363 / 369

页数：7

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