Optimization method for Microcystis bloom mitigation by hydrogen peroxide and its stimulative effects on growth of chlorophytes

Wang, Binliang; Song, Qingyang; Long, Jijian; Song, Gaofei; Mi, Wujuan; Bi, Yonghong

doi:10.1016/j.chemosphere.2019.04.138

Cited by 53 publications

(25 citation statements)

References 43 publications

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“…The arti cial endorsement of H 2 O 2 has a high potential to suppress cyanobacterial blooms with less effects on other organisms compared to other controlling methods [35][36][37][38][39] Natural H 2 O 2 formation has been identi ed in aquatic ecosystems as a photolysis of dissolved organic carbon (DOC) exposed to UV 3,[42][43][44] reported that the H 2 O 2 production varies with the nutrient content of the water body. However, the H 2 O 2 concentration of these waters was in the magnitude of mmol L - 1 4,26,45 .…”

Section: Discussionmentioning

confidence: 99%

Hydrogen Peroxide Can Be a Plausible Biomarker in Cyanobacterial Bloom Treatment

Asaeda¹,

Rahman²,

Abeynayaka³

2021

Preprint

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The effect of combined stresses, photoinhibition and nutrient depletion, on the oxidative stress of cyanobacteria was measured in laboratory experiments, to develop the biomass prediction model. Phormidium ambiguum was exposed to various photosynthetically active radiation (PAR) intensities and phosphorous concentrations with fixed nitrogen concentration. The samples were subjected to stress assays by detecting hydrogen peroxide (H2O2) concentration and antioxidant activities of catalase (CAT) and superoxide dismutase (SOD). H2O2 concentration decreased to 30 µmolm-2s-1 of PAR, then increased further with higher PAR intensity. Regarding phosphorus concentration, H2O2 concentration generally decreased with increasing phosphorus concentration. SOD and CAT activities were proportionate to the H2O2 protein-1. No H2O2 concentration detected outside of cells indicated the biological production of H2O2, and the accumulated H2O2 concentration inside cells was parameterized with H2O2 concentration protein-1. Over 30 µmolm-2s-1 of PAR, H2O2 concentration protein-1 had a similar increasing trend with PAR intensity, independently of phosphorous concentration. Meanwhile, with increasing phosphorous concentration, H2O2 protein-1 decreased in a similar pattern regardless of PAR intensity. Protein content decreased with increasing H2O2 gradually up to 4nmol H2O2 mg-1protein, which provides a threshold to restrict the growth of cyanobacteria. With these results. an empirical formula was developed to obtain the cyanobacteria biomass.

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Section: Discussionmentioning

confidence: 99%

Hydrogen Peroxide Can Be a Plausible Biomarker in Cyanobacterial Bloom Treatment

Asaeda¹,

Rahman²,

Abeynayaka³

2021

Preprint

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“…Here, we highlight an emerging venue based on intra- and inter-species communication/competition/allopathic interactions that take place between toxic cyanobacteria, non-toxic cyanobacteria (mainly Microcystis sp. ), and other organisms, mainly (but not only) green algae, that may ultimately lead to the development of mitigation protocols (see [ 66 , 75 , 89 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 ] and references therein). An emerging example is the reduction of cyanoHAB populations that enables the persistence dominance of various non-toxic algae.…”

Section: In-lake Treatmentsmentioning

confidence: 99%

Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

Sukenik

2021

Microorganisms

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An intensification of toxic cyanobacteria blooms has occurred over the last three decades, severely affecting coastal and lake water quality in many parts of the world. Extensive research is being conducted in an attempt to gain a better understanding of the driving forces that alter the ecological balance in water bodies and of the biological role of the secondary metabolites, toxins included, produced by the cyanobacteria. In the long-term, such knowledge may help to develop the needed procedures to restore the phytoplankton community to the pre-toxic blooms era. In the short-term, the mission of the scientific community is to develop novel approaches to mitigate the blooms and thereby restore the ability of affected communities to enjoy coastal and lake waters. Here, we critically review some of the recently proposed, currently leading, and potentially emerging mitigation approaches in-lake novel methodologies and applications relevant to drinking-water treatment.

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“…Addition of hydrogen peroxide (H 2 O 2 ) to lakes is a promising method for rapid mitigation of cyanobacterial blooms because cyanobacteria are more sensitive to low concentrations of H 2 O 2 than most eukaryotic organisms [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Furthermore, H 2 O 2 is a naturally occurring compound that degrades into water and oxygen, and hence, unlike other algicides, the added H 2 O 2 disappears within a few days [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

“…Effects of H 2 O 2 on cyanobacteria have been investigated mainly in small-scale laboratory experiments [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ], mesocosms and pond experiments [ 21 , 22 , 23 , 24 , 26 , 41 , 42 ]. Only a few studies have investigated H 2 O 2 treatments of entire lakes, reporting the impact on cyanobacteria, eukaryotic phytoplankton, zooplankton and macroinvertebrates at the ecosystem scale [ 25 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

Resilience of Microbial Communities after Hydrogen Peroxide Treatment of a Eutrophic Lake to Suppress Harmful Cyanobacterial Blooms

et al. 2021

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Applying low concentrations of hydrogen peroxide (H2O2) to lakes is an emerging method to mitigate harmful cyanobacterial blooms. While cyanobacteria are very sensitive to H2O2, little is known about the impacts of these H2O2 treatments on other members of the microbial community. In this study, we investigated changes in microbial community composition during two lake treatments with low H2O2 concentrations (target: 2.5 mg L−1) and in two series of controlled lake incubations. The results show that the H2O2 treatments effectively suppressed the dominant cyanobacteria Aphanizomenon klebahnii, Dolichospermum sp. and, to a lesser extent, Planktothrix agardhii. Microbial community analysis revealed that several Proteobacteria (e.g., Alteromonadales, Pseudomonadales, Rhodobacterales) profited from the treatments, whereas some bacterial taxa declined (e.g., Verrucomicrobia). In particular, the taxa known to be resistant to oxidative stress (e.g., Rheinheimera) strongly increased in relative abundance during the first 24 h after H2O2 addition, but subsequently declined again. Alpha and beta diversity showed a temporary decline but recovered within a few days, demonstrating resilience of the microbial community. The predicted functionality of the microbial community revealed a temporary increase of anti-ROS defenses and glycoside hydrolases but otherwise remained stable throughout the treatments. We conclude that the use of low concentrations of H2O2 to suppress cyanobacterial blooms provides a short-term pulse disturbance but is not detrimental to lake microbial communities and their ecosystem functioning.

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Optimization method for Microcystis bloom mitigation by hydrogen peroxide and its stimulative effects on growth of chlorophytes

Cited by 53 publications

References 43 publications

Hydrogen Peroxide Can Be a Plausible Biomarker in Cyanobacterial Bloom Treatment

Hydrogen Peroxide Can Be a Plausible Biomarker in Cyanobacterial Bloom Treatment

Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

Resilience of Microbial Communities after Hydrogen Peroxide Treatment of a Eutrophic Lake to Suppress Harmful Cyanobacterial Blooms

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