Harmful Algal Blooms in Eutrophic Marine Environments: Causes, Monitoring, and Treatment

Water, Год журнала: 2024, Номер 16(17), С. 2525 - 2525

Опубликована: Сен. 5, 2024

Marine eutrophication, primarily driven by nutrient over input from agricultural runoff, wastewater discharge, and atmospheric deposition, leads to harmful algal blooms (HABs) that pose a severe threat marine ecosystems. This review explores the causes, monitoring methods, control strategies for eutrophication in environments. Monitoring techniques include remote sensing, automated situ sensors, modeling, forecasting, metagenomics. Remote sensing provides large-scale temporal spatial data, while sensors offer real-time, high-resolution monitoring. Modeling forecasting use historical data environmental variables predict blooms, metagenomics insights into microbial community dynamics. Control treatments encompass physical, chemical, biological treatments, as well advanced technologies like nanotechnology, electrocoagulation, ultrasonic treatment. Physical such aeration mixing, are effective but costly energy-intensive. Chemical including phosphorus precipitation, quickly reduce levels may have ecological side effects. Biological biomanipulation bioaugmentation, sustainable require careful management of interactions. Advanced innovative solutions with varying costs sustainability profiles. Comparing these methods highlights trade-offs between efficacy, cost, impact, emphasizing need integrated approaches tailored specific conditions. underscores importance combining mitigate adverse effects on

Язык: Английский

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Suppression of phosphorus release from sediment by Vallisneria natans combined with iron- and zirconium-modified bentonites: Effectiveness, mechanism and response of sedimentary microbial communities

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(5), С. 113690 - 113690

Опубликована: Июль 29, 2024

Язык: Английский

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Enhanced effects of LMA combined with Vallisneria spiralis in controlling sediment organic phosphorus: the pivotal role of submerged macrophytes roots

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 117287 - 117287

Опубликована: Май 1, 2025

Язык: Английский

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Sediment resuspension causes horizontal variations in the distributions of phosphorus (P) and P-inactivating materials with differing P immobilization in different sediment planes

Water Research, Год журнала: 2023, Номер 243, С. 120327 - 120327

Опубликована: Июль 8, 2023

Язык: Английский

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Adsorption and immobilization of phosphorus in eutrophic lake water and sediments by a novel red soil based porous aerogel

Water Research, Год журнала: 2024, Номер 273, С. 123078 - 123078

Опубликована: Дек. 31, 2024

Язык: Английский

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Phosphorus migration from sediment to phosphorus-inactivating material: A key process neglected by common phosphorus immobilization assessments for lake geoengineering

Water Research X, Год журнала: 2023, Номер 21, С. 100197 - 100197

Опубликована: Авг. 15, 2023

Various phosphorus (P)-inactivating materials with a strong capability of immobilizing P in sediment have been developed for lake geoengineering purposes to control internal pollution. However, unsatisfactory applications raised concerns about the reliability method. This study hypothesized that migration from material is key process regulating immobilization, which often neglected by common assessment procedures assume closely contact (e.g., as mixtures). To verify this hypothesis, 90-day incubation tests were conducted using drinking water treatment residue (DWTR). The results showed soluble overlying sediment-DWTR mixtures and mobile substantially reduced initial period remained low during whole tests. based on separated samples indicated gradual DWTR immobilization. Even after 90 days incubation, still accounted ∼5.33% total sediment. Further analysis suggested accelerated assessment, leading faster immobilization assessment. Considering relatively levels decrease indicates release regulates efficiency. Therefore, designing proper strategy ensure sufficient time remain close target critical reducing uncertainties geoengineering.

Язык: Английский

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Two-phase changes in workability of sand-bentonite mixture triggered by seawater and binder during seepage cut-off wall construction in marine environment

Construction and Building Materials, Год журнала: 2023, Номер 401, С. 132900 - 132900

Опубликована: Авг. 14, 2023

Язык: Английский

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Effect of Combined Application of Lanthanum-Based Capping Material and Biochemical Oxidant on Control of Internal Phosphorus

Water, Год журнала: 2024, Номер 16(5), С. 641 - 641

Опубликована: Фев. 22, 2024

In situ capping and biochemical oxidation are two of the most commonly used methods for internal phosphorus (P) control, but there few studies on combined use these methods. this study, lanthanum (La)-based materials, La-modified bentonite (LMB) attapulgite chitosan composite (LMA&C), were with calcium nitrate (CN) to investigate effect sediment P control. Results showed that SRP removal rates by LMB+CN LMA&C+CN much higher than LMB, LMA&C CN alone. decreased DGT-labile flux both in overlying water surface 65 mm sediment, while LMB had an only 10~40 was effective sediments. transformed NH4Cl-P, BD-P, NaOH-SRP NaOH-NRP 20 HCl-P Residual-P day 60. resulting increase NH4Cl-P. sequestered mainly as Residual-P, BD-P −20~−60 mm. indicate combination La-based material is a promising method

Язык: Английский

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Overlooked role of long capping time and environmental factors in the plateau lake for impairing lanthanum-modified-bentonite's immobilization to phosphate

Water Research X, Год журнала: 2024, Номер 25, С. 100272 - 100272

Опубликована: Окт. 30, 2024

Язык: Английский

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