Standard

Critical assessment of chitosan as coagulant to remove cyanobacteria. / Lürling, Miquel (Corresponding author); Noyma, Natalia Pessoa; Magalhães, Leonardo de; Miranda, Marcela; Mucci, Maíra; Oosterhout, Frank van; Huszar, Vera L.M.; Marinho, Marcelo Manzi.

In: Harmful Algae, Vol. 66, 2017, p. 1 - 12.

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Harvard

Lürling, M, Noyma, NP, Magalhães, LD, Miranda, M, Mucci, M, Oosterhout, FV, Huszar, VLM & Marinho, MM 2017, 'Critical assessment of chitosan as coagulant to remove cyanobacteria' Harmful Algae, vol. 66, pp. 1 - 12. DOI: 10.1016/j.hal.2017.04.011

APA

Lürling, M., Noyma, N. P., Magalhães, L. D., Miranda, M., Mucci, M., Oosterhout, F. V., ... Marinho, M. M. (2017). Critical assessment of chitosan as coagulant to remove cyanobacteria. Harmful Algae, 66, 1 - 12. DOI: 10.1016/j.hal.2017.04.011

Vancouver

Lürling M, Noyma NP, Magalhães LD, Miranda M, Mucci M, Oosterhout FV et al. Critical assessment of chitosan as coagulant to remove cyanobacteria. Harmful Algae. 2017;66:1 - 12. Available from, DOI: 10.1016/j.hal.2017.04.011

Author

Lürling, Miquel ; Noyma, Natalia Pessoa ; Magalhães, Leonardo de ; Miranda, Marcela ; Mucci, Maíra ; Oosterhout, Frank van ; Huszar, Vera L.M. ; Marinho, Marcelo Manzi. / Critical assessment of chitosan as coagulant to remove cyanobacteria. In: Harmful Algae. 2017 ; Vol. 66. pp. 1 - 12

BibTeX

@article{95621a89c9314a67968ec43d8eba125b,
title = "Critical assessment of chitosan as coagulant to remove cyanobacteria",
abstract = "Removal of cyanobacteria from the water column using a coagulant and a ballast compound is a promising technique to mitigate nuisance. As coagulant the organic, biodegradable polymer chitosan has been promoted. Results in this study show that elevated pH, as may be common during cyanobacterial blooms, as well as high alkalinity may hamper the coagulation of chitosan and thus impair its ability to effectively remove positively buoyant cyanobacteria from the water column. The underlying mechanism is likely a shielding of the protonated groups by anions. Inasmuch as there are many chitosan formulations, thorough testing of each chitosan prior to its application is essential. Results obtained in glass tubes were similar to those from standard jar tests demonstrating that glass tube tests can be used for testing effects of coagulants and ballasts in cyanobacteria removal whilst allowing far more replicates. There was no relation between zeta potential and precipitated cyanobacteria. Given the well-known antibacterial activity of chitosan and recent findings of anti-cyanobacterial effects, pre-application tests are needed to decipher if chitosan may cause cell leakage of cyanotoxins. Efficiency- and side-effect testing are crucial for water managers to determine if the selected approach can be used in tailor-made interventions to control cyanobacterial blooms and to mitigate eutrophication.",
keywords = "international",
author = "Miquel L{\"u}rling and Noyma, {Natalia Pessoa} and Magalh{\~a}es, {Leonardo de} and Marcela Miranda and Ma{\'i}ra Mucci and Oosterhout, {Frank van} and Huszar, {Vera L.M.} and Marinho, {Marcelo Manzi}",
note = "6334, AqE; Data archiving: data property of and archived at WUR",
year = "2017",
doi = "10.1016/j.hal.2017.04.011",
language = "English",
volume = "66",
pages = "1 -- 12",
journal = "Harmful Algae",
issn = "1568-9883",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Critical assessment of chitosan as coagulant to remove cyanobacteria

AU - Lürling,Miquel

AU - Noyma,Natalia Pessoa

AU - Magalhães,Leonardo de

AU - Miranda,Marcela

AU - Mucci,Maíra

AU - Oosterhout,Frank van

AU - Huszar,Vera L.M.

AU - Marinho,Marcelo Manzi

N1 - 6334, AqE; Data archiving: data property of and archived at WUR

PY - 2017

Y1 - 2017

N2 - Removal of cyanobacteria from the water column using a coagulant and a ballast compound is a promising technique to mitigate nuisance. As coagulant the organic, biodegradable polymer chitosan has been promoted. Results in this study show that elevated pH, as may be common during cyanobacterial blooms, as well as high alkalinity may hamper the coagulation of chitosan and thus impair its ability to effectively remove positively buoyant cyanobacteria from the water column. The underlying mechanism is likely a shielding of the protonated groups by anions. Inasmuch as there are many chitosan formulations, thorough testing of each chitosan prior to its application is essential. Results obtained in glass tubes were similar to those from standard jar tests demonstrating that glass tube tests can be used for testing effects of coagulants and ballasts in cyanobacteria removal whilst allowing far more replicates. There was no relation between zeta potential and precipitated cyanobacteria. Given the well-known antibacterial activity of chitosan and recent findings of anti-cyanobacterial effects, pre-application tests are needed to decipher if chitosan may cause cell leakage of cyanotoxins. Efficiency- and side-effect testing are crucial for water managers to determine if the selected approach can be used in tailor-made interventions to control cyanobacterial blooms and to mitigate eutrophication.

AB - Removal of cyanobacteria from the water column using a coagulant and a ballast compound is a promising technique to mitigate nuisance. As coagulant the organic, biodegradable polymer chitosan has been promoted. Results in this study show that elevated pH, as may be common during cyanobacterial blooms, as well as high alkalinity may hamper the coagulation of chitosan and thus impair its ability to effectively remove positively buoyant cyanobacteria from the water column. The underlying mechanism is likely a shielding of the protonated groups by anions. Inasmuch as there are many chitosan formulations, thorough testing of each chitosan prior to its application is essential. Results obtained in glass tubes were similar to those from standard jar tests demonstrating that glass tube tests can be used for testing effects of coagulants and ballasts in cyanobacteria removal whilst allowing far more replicates. There was no relation between zeta potential and precipitated cyanobacteria. Given the well-known antibacterial activity of chitosan and recent findings of anti-cyanobacterial effects, pre-application tests are needed to decipher if chitosan may cause cell leakage of cyanotoxins. Efficiency- and side-effect testing are crucial for water managers to determine if the selected approach can be used in tailor-made interventions to control cyanobacterial blooms and to mitigate eutrophication.

KW - international

U2 - 10.1016/j.hal.2017.04.011

DO - 10.1016/j.hal.2017.04.011

M3 - Article

VL - 66

SP - 1

EP - 12

JO - Harmful Algae

T2 - Harmful Algae

JF - Harmful Algae

SN - 1568-9883

ER -

ID: 4547896