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Illite for the removal of E. coli by filtration in water treatment processes: A comparative studyoa mark
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Publication Year
2019-09-01
Journal
Desalination and Water Treatment
Publisher
Desalination Publications
Citation
Desalination and Water Treatment, Vol.163, pp.270-280
Keyword
Bacterial removalColumn experimentFilter mediaIlliteOptimizationResponse surface methodology
All Science Classification Codes (ASJC)
Water Science and TechnologyOcean EngineeringPollution
Abstract
The use of illite for the removal of microorganisms from water has not been studied by other researchers. We assessed the applicability of illite for bacterial removal from water and compared it with commercially available filter media. Column experiments were performed to evaluate the bacterial removal efficiency of filter media under different pH conditions and with chlorine-free tap water. The removal percentage of illite was higher than 90% and its sticking efficiency was greater than 0.85 under all experimental conditions. The removal percentage and sticking efficiency of illite were far superior to that of the other filter media. The high bacterial removal efficiency of illite may be a result of bacterial adhesion enhancement by the Al and Fe eluted from illite. A response surface methodology was employed to optimize experimental conditions including pH, filter depth, and flow rate and to elucidate the effects and interactions of these variables. All these parameters significantly influenced the bacterial removal of illite. From the optimization study, the highest removal percentage of 99.9% was obtained under conditions of a pH of 4.02, a filter depth of 18.49 cm, and a flow rate of 0.86 mL/min. Illite is a potential filter medium for purifying water and preventing groundwater pollution from septic tanks and carcass disposal.
ISSN
1944-3986
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/30961
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85073296997&origin=inward
DOI
https://doi.org/2-s2.0-85073296997
Journal URL
http://www.deswater.com/readfulltextopenaccess.php?id=RFdUX2FydGljbGVzL3ZvbF8xNjNfcGFwZXJzLzE2M18yMDE5XzI3MC5wZGY=
Type
Article
Funding
This work was supported by Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries (IPET) through Advanced Production Technology Development Program, funded by Ministry of Agriculture, Food and Rural Affairs(MAFRA)(Grant No. 317017-03). This work was also supported by IPET through Animal Disease Management Technology Development Program, funded by MAFRA (Grant No. 118095-2).
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Lee, Chang-Gu  Image
Lee, Chang-Gu 이창구
Department of Environmental and Safety Engineering
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