Performance evaluation of microfiltration with electrocoagulation and chemical coagulation pretreatment

Sharma, G., Shon, H. K, Aryal, R. and Phuntsho, S. (2011) Performance evaluation of microfiltration with electrocoagulation and chemical coagulation pretreatment. Desalination and Water Treatment, 34 1-3: 141-149. doi:10.5004/dwt.2011.2882


Author Sharma, G.
Shon, H. K
Aryal, R.
Phuntsho, S.
Title Performance evaluation of microfiltration with electrocoagulation and chemical coagulation pretreatment
Journal name Desalination and Water Treatment   Check publisher's open access policy
ISSN 1944-3994
1944-3986
Publication date 2011-10-01
Sub-type Article (original research)
DOI 10.5004/dwt.2011.2882
Volume 34
Issue 1-3
Start page 141
End page 149
Total pages 9
Place of publication Hopkinton, MA, United States
Publisher Balaban Publishers
Collection year 2012
Language eng
Abstract ne of the significant parameters to be considered for evaluating the process and economic viability of crosssflow microfiltration (MF) is flux stability. The MF economics are dependent on the flux decay through the membrane caused by membrane fouling. This work aims to evaluate the performance of MF by electro and chemical coagulation as pretreatments. The performance of MF was found to be sensitive to pH of feed solution, coagulant dosing and generation time. Acrylonitrile butadiene styrene (ABS) MF membrane of pore size 0.4 μm was used in this study. Without pretreatment normalised flux declined by 94% after 160 min of MF operation using model wastewater. However with pretreatments, the MF flux was significantly improved. The optimum performance for MF with both electro and chemical coagulation pretreatments occurred at isoelectric point where the highest removal of organic and turbidity was observed. With chemical coagulation under optimum conditions (30 mg/l alum dose and pH 6.5), MF did not experience any flux decline. MF performed better with chemical coagulation compared to electrocoagulation (EC). Also organic matter removal was found to be more for chemical coagulation than for EC.
Keyword Pretreatment
Crossflow
Electrocoagulation
Flux decline
Microfiltration
Zeta potential
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Advanced Water Management Centre Publications
 
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Created: Fri, 10 Feb 2012, 21:22:07 EST by Dr Rupak Aryal on behalf of Advanced Water Management Centre