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Surface-retained organic matter of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride in drinking water treatment
| Title: | Surface-retained organic matter of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride in drinking water treatment |
| Authors: | Takaara, Tomoko Browse this author | | Sano, Daisuke Browse this author →KAKEN DB | | Masago, Yoshifumi Browse this author | | Omura, Tatsuo Browse this author |
| Keywords: | Microcystis aeruginosa | | Surface-retained organic matter (SOM) | | Coagulation inhibition | | Polyaluminum chloride (PACl) | | Lipopolysaccharide (LPS) |
| Issue Date: | Jul-2010 |
| Publisher: | Elsevier |
| Journal Title: | Water Research |
| Volume: | 44 |
| Issue: | 13 |
| Start Page: | 3781 |
| End Page: | 3786 |
| Publisher DOI: | 10.1016/j.watres.2010.04.030 |
| 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. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/49828 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐野 大輔
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