Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9012
Title: Physico-chemical treatment techniques for wastewater laden with heavy metals
Authors: Kurniawan, TA
Chan, GYS 
Lo, WH 
Babel, S
Keywords: Electroplating industry
Heavy metal uptake
Inorganic effluent
Metal-contaminated water
Water pollution control
Issue Date: 2006
Publisher: Elsevier
Source: Chemical engineering journal, 2006, v. 118, no. 1-2, p. 83-98 How to cite?
Journal: Chemical engineering journal 
Abstract: This article reviews the technical applicability of various physico-chemical treatments for the removal of heavy metals such as Cd(II), Cr(III), Cr(VI), Cu(II), Ni(II) and Zn(II) from contaminated wastewater. A particular focus is given to chemical precipitation, coagulation-flocculation, flotation, ion exchange and membrane filtration. Their advantages and limitations in application are evaluated. Their operating conditions such as pH, dose required, initial metal concentration and treatment performance are presented. About 124 published studies (1980-2006) are reviewed. It is evident from the survey that ion exchange and membrane filtration are the most frequently studied and widely applied for the treatment of metal-contaminated wastewater. Ion exchange has achieved a complete removal of Cd(II), Cr(III), Cu(II), Ni(II) and Zn(II) with an initial concentration of 100 mg/L, respectively. The results are comparable to that of reverse osmosis (99% of Cd(II) rejection with an initial concentration of 200 mg/L). Lime precipitation has been found as one of the most effective means to treat inorganic effluent with a metal concentration of higher than 1000 mg/L. It is important to note that the overall treatment cost of metal-contaminated water varies, depending on the process employed and the local conditions. In general, the technical applicability, plant simplicity and cost-effectiveness are the key factors in selecting the most suitable treatment for inorganic effluent.
URI: http://hdl.handle.net/10397/9012
ISSN: 1385-8947
DOI: 10.1016/j.cej.2006.01.015
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

696
Last Week
9
Last month
6
Citations as of Sep 15, 2017

WEB OF SCIENCETM
Citations

591
Last Week
5
Last month
8
Citations as of Sep 24, 2017

Page view(s)

268
Last Week
7
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.