BROWSE

Related Researcher

Author

Mitchell, Robert J.
Applied & Environmental Microbiology Lab (AEML)
Research Interests
  • Pathogens, bdellovibrio bacteriovorus, patho-biotechnology

ITEM VIEW & DOWNLOAD

Pretreatment with alum or powdered activated carbon reduces bacterial predation-associated irreversible fouling of membranes

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Pretreatment with alum or powdered activated carbon reduces bacterial predation-associated irreversible fouling of membranes
Author
Kwon, Young-NamKim, Eun-HoDwidar, MohammedMitchell, Robert J.
Keywords
Bdellovibrio bacteriovorus; membrane filtration; irreversible fouling; alum; powdered activated carbon
Issue Date
201411
Publisher
TAYLOR & FRANCIS LTD
Citation
BIOFOULING, v.30, no.10, pp.1225 - 1233
Abstract
This study evaluated the co-application of bacterial predation by Bdellovibrio bacteriovorus and either alum coagulation or powdered activated carbon adsorption to reduce fouling caused by Escherichia coli rich feed solutions in dead-end microfiltration tests. The flux increased when the samples were predated upon or treated with 100 ppm alum or PAC, but co-treatment with alum and predation gave the best flux results. The total membrane resistance caused by the predated sample was reduced six-fold when treated with 100 ppm PAC, from 11.8 to 1.98 × 1011 m−1, while irreversible fouling (Rp) was 2.7-fold lower. Treatment with 100 ppm alum reduced the total resistance 14.9-fold (11.8 to 0.79 × 1011 m−1) while the Rp decreased 4.25-fold. SEM imaging confirmed this, with less obvious fouling of the membrane after the combined process. This study illustrates that the combination of bacterial predation and the subsequent removal of debris using coagulation or adsorption mitigates membrane biofouling and improves membrane performance.
URI
http://scholarworks.unist.ac.kr/handle/201301/9528
DOI
http://dx.doi.org/10.1080/08927014.2014.970538
ISSN
0892-7014
Appears in Collections:
UEE_Journal Papers
SLS_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

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

MENU