Suppression of phosphorus release from sediments using water clarifier sludge as capping material

Ichihara, Makiko; Nishio, Takayuki

doi:10.1080/09593330.2013.765924

Cited by 25 publications

(3 citation statements)

References 14 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technique has been applied widely to remediate sediments contaminated by different pollutants. Many capping materials have been developed, such as natural minerals, clean soils and activated carbon (Ichihara and Nishio 2013;Patmont et al 2015;Han et al 2016), as well as amended attapulgite, to manage the internal load of pollutants in shallow eutrophic lakes.…”

mentioning

confidence: 99%

Thin-layer fine-sand capping of polluted sediments decreases nutrients in overlying water of Wuhan Donghu Lake in China

Yang

et al. 2019

Environ Sci Pollut Res

View full text Add to dashboard Cite

Capping water body sediments with a thin layer of sand is an effective technique to decrease nutrient concentrations in the water column and accelerate ecological restoration of eutrophic water bodies. However, long-term effects of thin-layer sand capping in shallow lakes are reported less often. Using clean fine sand and geotextile mats as capping materials for sediments collected from Wuhan Donghu Lake in China, we designed a 290 d tank experiment with 3 cm of sand capping at four percentages of sediment coverage from 25-100% and a control (no capping). We monitored total nitrogen (TN), total phosphorus (TP), nitrate (NO 3 −), ammonia (NH 4 +) and soluble reactive phosphorus (SRP) in the overlying water every 7 d. Mean TN and NO 3 − concentrations were significantly the lowest (P<0.05) at 50% coverage. Further increase in coverage kept them fluctuating. NH 4 + concentration was significantly lowest (P<0.05) at 75% coverage. The relation between coverage and mean TP and SRP concentrations indicated that 75% coverage significantly decreased (P<0.05) them, and increasing coverage to 100% decreased them even more. The fluxes of TN and TP estimated between sediments and overlying water showed that the thin finesand layer significantly increased the function of sediments as a sink of TN from overlying water and the potential of a sand layer to block release of TP from sediments (P<0.05). Our results suggested that if thin-layer sand capping were applied to Wuhan Donghu Lake, more than 50% coverage is required to decrease nutrients in the lake's water.

show abstract

mentioning

confidence: 99%

Thin-layer fine-sand capping of polluted sediments decreases nutrients in overlying water of Wuhan Donghu Lake in China

Yang

et al. 2019

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…To determine the affinity of N to leach from the DWTRs, samples were mixed with deionized water at a 1:20 m/v ratio and shaken on an orbital shaker at 200 rpm for 6 h at room temperature (~23 • C) [26]. The suspension was centrifuged at 500× g for 10 min, decanted, and filtered through a 0.45-µm fiber filter.…”

Section: Leaching Assaysmentioning

confidence: 99%

Washing and Heat Treatment of Aluminum-Based Drinking Water Treatment Residuals to Optimize Phosphorus Sorption and Nitrogen Leaching: Considerations for Lake Restoration

Huser

Padungthon

Junggoth

et al. 2021

Water

View full text Add to dashboard Cite

Drinking water treatment residuals (DWTRs) generated during drinking water treatment have been proposed for use in lake restoration as a solid-phase sorbent to inactivate phosphorus (P) in lake sediment. However, treatments that minimize leaching of nitrogen (N) and optimize P sorption capacity may be necessary prior to use. This study assessed seven different treatment methods, including washing and heat treatments at different temperatures and with and without oxygen limitation, among two DWTRs from Thailand. Results showed that oxygen-limited heat treatment at 600 °C substantially reduced N leaching (<0.2 mg/kg TKN) while also improving P sorption capacity (increase of 18–32% compared to untreated DWTR) to a maximum of 45.7 mg P/kg. Washing with deionized water reduced N leaching if a sufficient volume was used but did not improve P sorption. Heating at 200 °C with or without the presence of oxygen did not improve N leaching or P sorption. Regression of P sorption parameters from a two-surface Langmuir isotherm against physio-chemical properties indicated that oxalate-extractable (i.e., amorphous) aluminum and iron were significantly associated with total P sorption capacity (R2 = 0.94), but micropores and oxalate-extractable P modulated the P sorption from high-affinity to low-affinity mechanisms. In conclusion, this study confirmed the importance of amorphous aluminum in DWTRs for inactivating P, and the results suggest that high-temperature treatment under oxygen-limited conditions may be the most reliable way to optimize DWTRs for environmental remediation applications.

show abstract

“…Recently, reuse of DWTR as a reactive material has been attempted for in situ chemical treatment to control eutrophication2021. Immobilized P in lake sediment caused by DWTR has been shown to exhibit high stability under varied conditions, e.g., pH (in the range of 5–9), dissolved oxygen, ion strength, organic matter, and silicate22.…”

mentioning

confidence: 99%

Applicability of drinking water treatment residue for lake restoration in relation to metal/metalloid risk assessment

Yuan

Wang

Pei

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Drinking water treatment residue (DWTR), a byproduct generated during potable water production, exhibits a high potential for recycling to control eutrophication. However, this beneficial recycling is hampered by unclear metal/metalloid pollution risks related to DWTR. In this study, the pollution risks of Al, As, Ba, Be, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, and Zn due to DWTR application were first evaluated for lake water based on human health risk assessment models and comparison of regulatory standards. The risks of DWTR were also evaluated for sediments on the basis of toxicity characteristics leaching procedure and fractionation in relation to risk assessment code. Variations in the biological behaviors of metal/metalloid in sediments caused by DWTR were assessed using Chironomus plumosus larvae and Hydrilla verticillata. Kinetic luminescent bacteria test (using Aliivibrio fischeri) was conducted to analyze the possibility of acute and chronic detrimental effects of sediment with DWTR application. According to the obtained results, we identify a potential undesirable effect of DWTR related to Fe and Mn (typically under anaerobic conditions); roughly present a dosage threshold calculation model; and recommend a procedure for DWTR prescreening to ensure safe application. Overall, managed DWTR application is necessary for successful eutrophication control.

show abstract

Suppression of phosphorus release from sediments using water clarifier sludge as capping material

Cited by 25 publications

References 14 publications

Thin-layer fine-sand capping of polluted sediments decreases nutrients in overlying water of Wuhan Donghu Lake in China

Thin-layer fine-sand capping of polluted sediments decreases nutrients in overlying water of Wuhan Donghu Lake in China

Washing and Heat Treatment of Aluminum-Based Drinking Water Treatment Residuals to Optimize Phosphorus Sorption and Nitrogen Leaching: Considerations for Lake Restoration

Applicability of drinking water treatment residue for lake restoration in relation to metal/metalloid risk assessment

Contact Info

Product

Resources

About