Optimization of aluminum treatment efficiency to control internal phosphorus loading in eutrophic lakes

Agstam-Norlin, Oskar; Lannergård, Emma; Futter, Martyn N.; Huser, Brian

doi:10.1016/j.watres.2020.116150

Cited by 26 publications

(4 citation statements)

References 33 publications

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“…This was consistent with a previous study showing the presence of flocs in the surface sediment at a depth of 0-10 cm during application of PAC [38,39]. Binding efficiencies of aluminum can be enhanced when aluminum was applied directly into the sediment [40]. Lastly, it is suggested that long term monitoring of water quality should be conducted after the end of restoration to investigate the duration of PAC's effects since the longevity of the clear water state after chemical treatment varies from one year to several decades [41] depending on the input of exogenous nutrient loading.…”

Section: Sediment Propertiessupporting

confidence: 93%

A Field Experiment on Restoration of a Hyper-Eutrophic Urban Shallow Pool Using Polyaluminium Chloride in Thailand

Tongman,

Poungcharean,

Jitchum

et al. 2023

Pol. J. Environ. Stud.

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Eutrophication and plankton blooms have long been the primary environmental concerns for freshwater ecosystems in Thailand and worldwide [1][2][3]. The main cause of the problem is the addition of excessive plant nutrients originating from various sources, such as agricultural areas, wastewater treatment plants, industrial sectors, and residential areas. These nutrients stimulate rapid growth of phytoplankton, especially cyanobacteria, which can lead to degradation of water quality. Eutrophication causes an unpleasant hue and odor of water bodies as well as the production of cyanotoxins by cyanobacteria, such as Microcystis, Planktothrix and Anabaena [4,5]. These biotoxins can cause acute and chronic health problems for humans and other living organisms exposed to contaminated water. These health effects include allergies, skin and eye

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Section: Sediment Propertiessupporting

confidence: 93%

A Field Experiment on Restoration of a Hyper-Eutrophic Urban Shallow Pool Using Polyaluminium Chloride in Thailand

Tongman,

Poungcharean,

Jitchum

et al. 2023

Pol. J. Environ. Stud.

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“…A decision tree by Huser, Egemose, et al (2016) indicates Al dose, lake morphometry (ratio of mean depth to square root of the area), and watershed to lake area ratio (related to hydraulic residence time and internal P loads) to be the most important variables determining treatment longevity. Small Al doses applied at high frequency increase the P binding efficiency (Agstam‐Norlin et al, 2020). Addition of small doses of iron salts and/or magnesium chloride repeated several times a year proved to be effective in removing P and N from the water column in shallow or artificially oxygenated thermally stratified lakes in Western Poland (Dondajewska et al, 2019, 2020).…”

Section: Assessing the Sustainability Of In‐lake Measuresmentioning

confidence: 99%

Sustainable lake restoration: From challenges to solutions

Tammeorg,

Chorus,

Spears

et al. 2023

WIREs Water

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Sustainable management of lakes requires us to overcome ecological, economic, and social challenges. These challenges can be addressed by focusing on achieving ecological improvement within a multifaceted, co‐beneficial context. In‐lake restoration measures may promote more rapid ecosystem responses than is feasible with catchment measures alone, even if multiple interventions are needed. In particular, we identify restoration methods that support the overarching societal target of a circular economy through the use of nutrients, sediments, or biomass that are removed from a lake, in agriculture, as food, or for biogas production. In this emerging field of sustainable restoration techniques, we show examples, discuss benefits and pitfalls, and flag areas for further research and development. Each lake should be assessed individually to ensure that restoration approaches will effectively address lake‐specific problems, do not harm the target lake or downstream ecosystems, are cost‐effective, promote delivery of valuable ecosystem services, minimize conflicts in public interests, and eliminate the necessity for repeated interventions. Achieving optimal, sustainable results from lake restoration relies on multidisciplinary research and close interactions between environmental, social, political, and economic sectors.This article is categorized under: Science of Water > Water Quality Water and Life > Stresses and Pressures on Ecosystems Water and Life > Conservation, Management, and Awareness

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“…Most schemes define operational P fractions, including loosely sorbed P, metal‐associated P (e.g., iron [Fe] and aluminum [Al]), and calcium (Ca)‐bound P (Condron & Newman, 2011). Numerous studies exist on P fractions in lake sediment (Agstam‐Norlin et al., 2020; Kaiserli et al., 2002; O'Connell et al., 2020; Pettersson, 1998), and there are a few studies of P fractions in streambed sediment (Audette et al., 2018; Lannergård et al., 2020; SanClements et al., 2009). However, studies of FSS are rare (Ballantine et al., 2008; Nguyen & Sukias, 2002), and knowledge about seasonal variations is needed.…”

Section: Introductionmentioning

confidence: 99%

Variability in fluvial suspended and streambed sediment phosphorus fractions among small agricultural streams

et al. 2021

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Agriculture is a major source of sediment and particulate phosphorus (P) inputs to freshwaters. Distinguishing between P fractions in sediment can aid in understanding its eutrophication risk. Although streams and rivers are important parts of the P cycle in agricultural catchments, streambed sediment and especially fluvial suspended sediment (FSS) and its P fractions are less studied. To address this knowledge gap, seasonal variations in FSS P fractions and their relation to water quality and streambed sediment were examined in three Swedish agricultural headwater catchments over 2 yr. Sequential fractionation was used to characterize P fractions in both streambed sediment and FSS. All catchments had similar annual P losses (0.4-0.8 kg ha -1 ), suspended solids (124-183 mg L -1 ), and FSS total P concentrations (1.15-1.19 mg g -1 ). However, distribution of P fractions and the dominant P fractions in FSS differed among catchments (p < .05), which was most likely dependent on differences in catchment geology, clay content, external P sources, and flow conditions. The most prominent seasonal pattern in all catchments was found for iron-bound P, with high concentrations during low summer flows and low concentrations during winter high flows. Streambed sediment P fractions were in the same concentration ranges as in FSS, and the distribution of the fractions differed between catchments. This study highlights the need to quantify P fractions, not just total P in FSS, to obtain a more complete understanding of the eutrophication risk posed by agricultural sediment losses.

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Optimization of aluminum treatment efficiency to control internal phosphorus loading in eutrophic lakes

Cited by 26 publications

References 33 publications

A Field Experiment on Restoration of a Hyper-Eutrophic Urban Shallow Pool Using Polyaluminium Chloride in Thailand

A Field Experiment on Restoration of a Hyper-Eutrophic Urban Shallow Pool Using Polyaluminium Chloride in Thailand

Sustainable lake restoration: From challenges to solutions

Variability in fluvial suspended and streambed sediment phosphorus fractions among small agricultural streams

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