title: Behaviors of Microcystis aeruginosa cells during floc storage in drinking water treatment process.
abstract: This is the first study to systematically investigate the different behaviors of Microcystis aeruginosa in the sludges formed by AlCl3, FeCl3, and polymeric aluminium ferric chloride (PAFC) coagulants during storage. Results show that the viability of Microcystis aeruginosa in PAFC sludge was stronger than that of cells in either AlCl3or FeCl3sludge after the same storage time, while the cells' viability in the latter two systems stayed at almost the same level. In AlCl3and FeCl3sludges high concentrations of Al and Fe were toxic to Microcystis aeruginosa, whereas in PAFC sludge low levels of Al showed little toxic effect on Microcystis aeruginosa growth and moderate amounts of Fe were beneficial to growth. The lysis of Microcystis aeruginosa in AlCl3sludge was more serious than that in PAFC sludge, for the same storage time. Although the cell viability in FeCl3sludge was low (similar to AlCl3sludge), the Microcystis aeruginosa cells remained basically intact after 10 d storage (similar to PAFC sludge). The maintenance of cellular integrity in FeCl3sludge might be due to the large floc size and high density, which had a protective effect for Microcystis aeruginosa.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Hangzhou
authors.initials: H
authors.lastname: Xu
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.|Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan, 250061, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Pei
authors.affiliation: School of Physics, Shandong University, 250100, China.
authors.forename: Hongdi
authors.initials: H
authors.lastname: Xiao
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Jin
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Xiuqing
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.|Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan, 250061, China.
authors.forename: Wenrong
authors.initials: W
authors.lastname: Hu
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Chunxia
authors.initials: C
authors.lastname: Ma
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Jiongming
authors.initials: J
authors.lastname: Sun
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
authors.forename: Hongmin
authors.initials: H
authors.lastname: Li
mesh_terms: D000077410:Aluminum Chloride; D017607:Aluminum Compounds; D000818:Animals; D058491:Bacterial Load; D001427:Bacterial Toxins / Q000032:analysis / Q000633:toxicity; D002712:Chlorides; D060766:Drinking Water / Q000382:microbiology*; D005068:Eutrophication; D005290:Ferric Compounds; D005427:Flocculation; D006801:Humans; D046931:Microcystis / Q000737:chemistry / Q000254:growth & development* / Q000472:pathogenicity*; D008855:Microscopy, Electron, Scanning; D012722:Sewage / Q000382:microbiology; D013997:Time Factors; D014871:Water Microbiology; D018508:Water Purification / Q000379:methods; D060753:Water Quality
chemical_list: D017607:Aluminum Compounds; D001427:Bacterial Toxins; D002712:Chlorides; D060766:Drinking Water; D005290:Ferric Compounds; D012722:Sewage; D000077410:Aluminum Chloride; C024555:ferric chloride