Effects of polyaluminum chloride and lanthanum-modified bentonite on the growth rates of three Cylindrospermopsis raciborskii strains

Becker, Vanessa; Araújo, Fabiana; Van Oosterhout, Frank; Attayde, José Luiz; Lurling, Miquel

Effects of polyaluminum chloride and lanthanum-modified bentonite on the growth rates of three Cylindrospermopsis raciborskii strains

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dc.contributor.author	Becker, Vanessa
dc.contributor.author	Araújo, Fabiana
dc.contributor.author	Van Oosterhout, Frank
dc.contributor.author	Attayde, José Luiz
dc.contributor.author	Lurling, Miquel
dc.date.accessioned	2020-12-07T21:52:19Z
dc.date.available	2020-12-07T21:52:19Z
dc.date.issued	2018-04-03
dc.description.resumo	In tropical and subtropical lakes, eutrophication often leads to nuisance blooms of Cylindrospermopsis raciborskii. In laboratory experiments, we tested the combined effects of flocculant polyaluminum chloride (PAC) and lanthanum-modified bentonite (LMB) on the sinking and growth rates of three C.raciborskii strains. We tested the hypothesis that the combination of PAC and LMB would (1) effectively sink C.raciborskii in a test tube experiment and (2)impair C.raciborskii growth, irrespective of the biomass of the inoculum (bloom) and the strain in the growth experiment. We tested the recommended (LMB1) and a three-times higher dose of LMB (LMB3). The combined addition of PAC and LMB enhanced the sedimentation of al lC.raciborskii strains. Moreover, both the PAC and LMB doses decreased the phosphate concentration. PAC and LMB1 decreased the growth rate of al lstrains, but the efficacy depended on the biomass and strain. The combined addition of PAC and LMB3 inhibited the growth of all strains independently of the biomass and strain. We conclude that a low dose of PAC in combination with the recommended dose of LMB decreases C.raciborskii blooms and that the efficiency of the technique depends on the biomass of the bloom. A higher dose of LMB is needed to obtain a more efficient control of C.raciborskii blooms	pt_BR
dc.identifier.citation	ARAÚJO, Fabiana; VAN OOSTERHOUT, Frank; BECKER, Vanessa; ATTAYDE, José Luiz; LÜRLING, Miquel. Effects of polyaluminum chloride and lanthanum-modified bentonite on the growth rates of three Cylindrospermopsis raciborskii strains. Plos One, [S.L.], v. 13, n. 4, p. 0195359-0195373, 3 abr. 2018. Public Library of Science (PLoS). Disponível em <https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0195359>. Acesso em 20 out 2020. http://dx.doi.org/10.1371/journal.pone.0195359.	pt_BR
dc.identifier.doi	10.1371/journal.pone.0195359
dc.identifier.issn	1932-6203
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30884
dc.language	en	pt_BR
dc.publisher	Public Library od Science	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Polyaluminum chloride	pt_BR
dc.subject	Bentonite	pt_BR
dc.subject	Lanthanum	pt_BR
dc.title	Effects of polyaluminum chloride and lanthanum-modified bentonite on the growth rates of three Cylindrospermopsis raciborskii strains	pt_BR
dc.type	article	pt_BR