RRC ID 21782
Author Takaara T, Sano D, Masago Y, Omura T.
Title Surface-retained organic matter of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride in drinking water treatment.
Journal Water Res
Abstract Algogenic organic matter produced by the excess growth of cyanobacteria in semi-closed water areas causes coagulation inhibition in drinking water production. In this study, hydrophilic substances of Microcystis aeruginosa, which were mainly composed of lipopolysaccharide (LPS) and RNA, were prepared, and the involvement of these cyanobacterial hydrophilic substances in coagulation inhibition was investigated. As a result, it was found that the negatively charged hydrophilic substances with a molecular weight higher than 10 kDa have a significant role in coagulation inhibition. Further fractionation of cyanobacterial hydrophilic substances revealed that surface-retained organic matter (SOM), including LPS, could exhibit a potent inhibitory effect on the coagulation using polyaluminum chloride (PACl), presumably because of the direct interaction of hydrophilic SOM with cations originated from PACl, which could impede the hydrolysis of the coagulant.
Volume 44(13)
Pages 3781-6
Published 2010-7-1
DOI 10.1016/j.watres.2010.04.030
PII S0043-1354(10)00283-6
PMID 20570314
MeSH Aluminum Hydroxide / pharmacology* Biodegradation, Environmental / drug effects Flocculation / drug effects Microcystis / chemistry* Organic Chemicals / pharmacology* Ribonucleases / metabolism Surface Properties / drug effects Water Purification / methods* Water Supply / analysis*
IF 9.13
Times Cited 57
Algae NIES-91