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The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system. / Miranda, Marcela (Corresponding author); Noyma, Natalia; Pacheco, Felipe S.; de Magalhaes, Leonardo; Pinto, Ernani; Santos, Suzan; Soares, Maria Fernanda A.; Huszar, Vera L.; Lürling, Miquel; Marinho, Marcelo M.

In: Harmful Algae, Vol. 65, 05.2017, p. 27-39.

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Harvard

Miranda, M, Noyma, N, Pacheco, FS, de Magalhaes, L, Pinto, E, Santos, S, Soares, MFA, Huszar, VL, Lürling, M & Marinho, MM 2017, 'The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system' Harmful Algae, vol. 65, pp. 27-39. https://doi.org/10.1016/j.hal.2017.04.007

APA

Miranda, M., Noyma, N., Pacheco, F. S., de Magalhaes, L., Pinto, E., Santos, S., ... Marinho, M. M. (2017). The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system. Harmful Algae, 65, 27-39. https://doi.org/10.1016/j.hal.2017.04.007

Vancouver

Miranda M, Noyma N, Pacheco FS, de Magalhaes L, Pinto E, Santos S et al. The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system. Harmful Algae. 2017 May;65:27-39. https://doi.org/10.1016/j.hal.2017.04.007

Author

Miranda, Marcela ; Noyma, Natalia ; Pacheco, Felipe S. ; de Magalhaes, Leonardo ; Pinto, Ernani ; Santos, Suzan ; Soares, Maria Fernanda A. ; Huszar, Vera L. ; Lürling, Miquel ; Marinho, Marcelo M. / The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system. In: Harmful Algae. 2017 ; Vol. 65. pp. 27-39.

BibTeX

@article{0b2d7708ddfd4f27a2e85bc2c8a77a87,
title = "The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system",
abstract = "We tested the hypothesis that a combination of coagulant and ballast could be efficient for removal of positively buoyant harmful cyanobacteria in shallow tropical waterbodies, and will not promote the release of cyanotoxins. This laboratory study examined the efficacy of coagulants [polyaluminium chloride (PAC) and chitosan (made of shrimp shells)] alone, and combined with ballast (lanthanum modified bentonite, red soil or gravel) to remove the natural populations of cyanobacteria collected from a shallow eutrophic urban reservoir with alternating blooms of Cylindrospermopsis and Microcystis. PAC combined with ballast was effective in settling blooms dominated by Microcystis or Cylindrospermopsis. Contrary to our expectation, chitosan combined with ballast was only effective in settling Cylindrospermopsis-dominated blooms at low pH, whereas at pH ≥ 8 no effective flocculation and settling could be evoked. Chitosan also had a detrimental effect on Cylindrospermopsis causing the release of saxitoxins. In contrast, no detrimental effect on Microcystis was observed and all coagulant-ballast treatments were effective in not only settling the Microcystis dominated bloom, but also lowering dissolved microcystin concentrations. Our data show that the best procedure for biomass reduction also depends on the dominant species.",
keywords = "Eutrophication control, Cyanobacteria mitigation, Microcystis, Cylindrospermopsis, Chitosan, international",
author = "Marcela Miranda and Natalia Noyma and Pacheco, {Felipe S.} and {de Magalhaes}, Leonardo and Ernani Pinto and Suzan Santos and Soares, {Maria Fernanda A.} and Huszar, {Vera L.} and Miquel L{\"u}rling and Marinho, {Marcelo M.}",
note = "6318, AqE; Data archiving: Data property of and archived at WUR",
year = "2017",
month = "5",
doi = "10.1016/j.hal.2017.04.007",
language = "English",
volume = "65",
pages = "27--39",
journal = "Harmful Algae",
issn = "1568-9883",
publisher = "Elsevier B.V.",

}

RIS

TY - JOUR

T1 - The efficiency of combined coagulant and ballast to remove harmful cyanobacterial blooms in a tropical shallow system

AU - Miranda, Marcela

AU - Noyma, Natalia

AU - Pacheco, Felipe S.

AU - de Magalhaes, Leonardo

AU - Pinto, Ernani

AU - Santos, Suzan

AU - Soares, Maria Fernanda A.

AU - Huszar, Vera L.

AU - Lürling, Miquel

AU - Marinho, Marcelo M.

N1 - 6318, AqE; Data archiving: Data property of and archived at WUR

PY - 2017/5

Y1 - 2017/5

N2 - We tested the hypothesis that a combination of coagulant and ballast could be efficient for removal of positively buoyant harmful cyanobacteria in shallow tropical waterbodies, and will not promote the release of cyanotoxins. This laboratory study examined the efficacy of coagulants [polyaluminium chloride (PAC) and chitosan (made of shrimp shells)] alone, and combined with ballast (lanthanum modified bentonite, red soil or gravel) to remove the natural populations of cyanobacteria collected from a shallow eutrophic urban reservoir with alternating blooms of Cylindrospermopsis and Microcystis. PAC combined with ballast was effective in settling blooms dominated by Microcystis or Cylindrospermopsis. Contrary to our expectation, chitosan combined with ballast was only effective in settling Cylindrospermopsis-dominated blooms at low pH, whereas at pH ≥ 8 no effective flocculation and settling could be evoked. Chitosan also had a detrimental effect on Cylindrospermopsis causing the release of saxitoxins. In contrast, no detrimental effect on Microcystis was observed and all coagulant-ballast treatments were effective in not only settling the Microcystis dominated bloom, but also lowering dissolved microcystin concentrations. Our data show that the best procedure for biomass reduction also depends on the dominant species.

AB - We tested the hypothesis that a combination of coagulant and ballast could be efficient for removal of positively buoyant harmful cyanobacteria in shallow tropical waterbodies, and will not promote the release of cyanotoxins. This laboratory study examined the efficacy of coagulants [polyaluminium chloride (PAC) and chitosan (made of shrimp shells)] alone, and combined with ballast (lanthanum modified bentonite, red soil or gravel) to remove the natural populations of cyanobacteria collected from a shallow eutrophic urban reservoir with alternating blooms of Cylindrospermopsis and Microcystis. PAC combined with ballast was effective in settling blooms dominated by Microcystis or Cylindrospermopsis. Contrary to our expectation, chitosan combined with ballast was only effective in settling Cylindrospermopsis-dominated blooms at low pH, whereas at pH ≥ 8 no effective flocculation and settling could be evoked. Chitosan also had a detrimental effect on Cylindrospermopsis causing the release of saxitoxins. In contrast, no detrimental effect on Microcystis was observed and all coagulant-ballast treatments were effective in not only settling the Microcystis dominated bloom, but also lowering dissolved microcystin concentrations. Our data show that the best procedure for biomass reduction also depends on the dominant species.

KW - Eutrophication control

KW - Cyanobacteria mitigation

KW - Microcystis

KW - Cylindrospermopsis

KW - Chitosan

KW - international

U2 - 10.1016/j.hal.2017.04.007

DO - 10.1016/j.hal.2017.04.007

M3 - Article

VL - 65

SP - 27

EP - 39

JO - Harmful Algae

JF - Harmful Algae

SN - 1568-9883

ER -

ID: 4295130