DSpace Repository

Biofouling control: Bacterial quorum quenching versus chlorination in membrane bioreactors

Show simple item record

dc.contributor.author Weerasekara, N.A.
dc.contributor.author Choo, K.H.
dc.contributor.author Lee, C.H.
dc.date.accessioned 2017-09-28T08:15:33Z
dc.date.available 2017-09-28T08:15:33Z
dc.date.issued 2016
dc.identifier.citation N.A. Weerasekara, K.H. Choo, C.H. Lee, (2016), “Biofouling control: Bacterial quorum quenching versus chlorination in membrane bioreactors”, Water Research en_US, si_LK
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/5555
dc.description.abstract Biofilm formation (biofouling) induced via cell-to-cell communication (quorum sensing) causes problems in membrane filtration processes. Chorine is one of the most common chemicals used to interfere with biofouling; however, biofouling control is challenging because it is a natural process. This study demonstrates biofouling control for submerged hollow fiber membranes in membrane bioreactors by means of bacterial quorum quenching (QQ) using Rhodococcus sp. BH4 with chemically enhanced backwashing. This is the first trial to bring QQ alongside chlorine injection into practice. A high chlorine dose (100 mg/L as Cl2) to the system is insufficient for preventing biofouling, but addition of the QQ bacterium is effective for disrupting biofouling that cannot be achieved by chlorination alone. QQ reduces the biologically induced metal precipitate and extracellular biopolymer levels in the biofilm, and biofouling is significantly delayed when QQ is applied in addition to chlorine dosing. QQ with chlorine injection gives synergistic effects on reducing physically and chemically reversible fouling resistances while saving substantial filtration energy. Manipulating microbial community functions with chemical treatment is an attractive tool for biofilm dispersal in membrane bioreactors. en_US, si_LK
dc.language.iso en_US en_US, si_LK
dc.subject Biofouling en_US, si_LK
dc.subject Cell communication; Chlorination en_US, si_LK
dc.subject Quorum quenching en_US, si_LK
dc.subject Signal molecule en_US, si_LK
dc.title Biofouling control: Bacterial quorum quenching versus chlorination in membrane bioreactors en_US, si_LK
dc.type Article en_US, si_LK


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account