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TitleComparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency
Author(s)Geada, Pedro
Oliveira, F.
Loureiro, Luís
Esteves, D.
Teixeira, J. A.
Vasconcelos, Vítor
Vicente, A. A.
Fernandes, Bruno D.
KeywordsInduced flocculation
Zeta potential
Harvesting efficiency
Microcystis aeruginosa
Issue dateJun-2019
PublisherSpringer Nature
JournalEnvironmental Science and Pollution Research
CitationGeada, Pedro; Oliveira, F.; Luís Loureiro; Esteves, D.; Teixeira, José A.; Vasconcelos, Vítor; Vicente, António A.; Fernandes, Bruno D., Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency. Environmental Science and Pollution Research, 26(16), 16708-16715, 2019
Abstract(s)This study has compared the harvesting efficiency of four flocculation methods, namely, induced by pH, FeCl3, AlCl3 and chitosan. No changes were observed on M. aeruginosa cells. Flocculation assays performed at pH 3 and 4 have shown the best harvesting efficiency among the pH-induced tests, reaching values above 90% after 8 h. The adjustment of zeta potential (ZP) to values comprised between 6.7 and 20.7 mV enhanced significantly the settling rates using flocculant agents, being FeCl3 the best example where increments up to 88% of harvesting efficiency were obtained. Although all the four methods tested have presented harvesting efficiencies above 91% within the first 8 h after the optimization process, the highest performance was obtained using 3.75 mg L1 of FeCl3, which allowed reaching 92% in 4 h.
Publisher version
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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