Phosphorus and Cyanobacteria Precipitation and Sediment Capping in Lake Water Using Alum and Natural Minerals

Sadeghi, Sepideh; Hua, Guanghui; Min, Kyungnan; Johnson, Tylor J.; Gibbons, William B.

doi:10.1061/(asce)ee.1943-7870.0001621

Cited by 2 publications

(2 citation statements)

References 36 publications

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“…Physical control methods also include alteration of the habitat to make it unfavorable for cyanobacterial survival and proliferation. For instance, artificial shading [24,27], pressurization [28], and physical aeration, nanobubble ozonation, or sonication/ultrasound/acoustic cavitation [29][30][31] can be used to physically suppress or damage cyanobacterial cells, and the capping and dredging of aquatic soil and sediment can be used to reduce pre-existing nutrient loads and viable toxic cyanobacterial dormant stages [32][33][34]. Potentially, these methods can be automated or otherwise improved using recent advances in robotic technology and artificial intelligence, such as low-cost unmanned surface vehicles equipped with active suction pumps and mesh-based algae filtration systems [35].…”

Section: Control Methodsmentioning

confidence: 99%

“…Physical cont removal, or elimination of toxic cyanobacteria [23] moval, and coagulants falls within this category [2 voirs (hydrologic control, flushing [20,26]). Physical tion of the habitat to make it unfavorable for cyano For instance, artificial shading [24,27], pressurizatio bubble ozonation, or sonication/ultrasound/acoust physically suppress or damage cyanobacterial cell aquatic soil and sediment can be used to reduce p toxic cyanobacterial dormant stages [32][33][34]. Potentia or otherwise improved using recent advances in ro gence, such as low-cost unmanned surface vehicles and mesh-based algae filtration systems [35].…”

Section: Control Methodsmentioning

confidence: 99%

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Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

Banerji

Benesh

2022

Ecologies

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Water resources are critically important, but also pose risks of exposure to toxic and pathogenic microbes. Increasingly, a concern is toxic cyanobacteria, which have been linked to the death and disease of humans, domesticated animals, and wildlife in freshwater systems worldwide. Management approaches successful at reducing cyanobacterial abundance and toxin production have tended to be short-term solutions applied on small scales (e.g., algaecide application) or solutions that entail difficult multifaceted investments (e.g., modification of landscape and land use to reduce nutrient inputs). However, implementation of these approaches can be undermined by microbial species interactions that (a) provide toxic cyanobacteria with protection against the method of control or (b) permit toxic cyanobacteria to be replaced by other significant microbial threats. Understanding these interactions is necessary to avoid such scenarios and can provide a framework for novel strategies to enhance freshwater resource management via systems science (e.g., pairing existing physical and chemical approaches against cyanobacteria with ecological strategies such as manipulation of natural enemies, targeting of facilitators, and reduction of benthic occupancy and recruitment). Here, we review pertinent examples of the interactions and highlight potential applications of what is known.

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Section: Control Methodsmentioning

confidence: 99%

Section: Control Methodsmentioning

confidence: 99%

Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

Banerji

Benesh

2022

Ecologies

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Behavior characteristics of phosphorus and capping effect of microbubble flotation to control phosphorus release in the benthic sediment

Choi

Jeong

Jang

et al. 2022

Water Quality Research Journal

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Microbubbles were applied to remove phosphorus (P) and improve environmental water conditions on the surface of the benthic sediment in a eutrophic lake. Microbubble flotation (MF) was used to remove P in a laboratory-scale experiment device from the benthic sediment and overlying water field samples. The results of P tracing observation for MF treatment, which were identified based on the mass balance, showed P accumulated at a higher concentration in the floated scum than in the deposited sludge. Furthermore, while the amount of soluble P separated was insignificant, the removal efficiency of soluble P in the floated scum was higher than total P. As an additional effect, P release was suppressed by the injection of microbubbles, which reduced anaerobicization and improved environmental conditions in the overlying water of the lake. We also confirmed that the sludge that settled after flotation separation caused capping, which restrained P release by forming a layer on the surface of the sediment. The direct P flotation separation, provision of oxygen by injected microbubbles, and capping effect of re-deposited sludge are advantages associated with MF, and our results show that field application studies are warranted.

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Phosphorus and Cyanobacteria Precipitation and Sediment Capping in Lake Water Using Alum and Natural Minerals

Cited by 2 publications

References 36 publications

Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

Incorporating Microbial Species Interaction in Management of Freshwater Toxic Cyanobacteria: A Systems Science Challenge

Behavior characteristics of phosphorus and capping effect of microbubble flotation to control phosphorus release in the benthic sediment

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