The Effect of Paper Mill Waste and Sewage Sludge Amendments on Acid Soil Properties

Méndez, Ana; Barriga, Sandra; Guerrero, Francisca Parra; Guerrero, Gabriel Gascó

doi:10.1097/ss.0b013e318257c30f

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…The evaluated properties included heavy metal solubility and bioavailability in BDB-treated soils compared to those treated with raw sewage sludge. The risk of leaching of Cu, Ni, and Zn were lower in the soil treated with BDB than in the sewage sludge treatment [162]. Biochar-amended samples also reduced the availability of Ni, Zn, Cd, and Pb in plants compared to amended samples of sewage sludge (Tables 3 and 4).…”

Section: Bioavailability and Bioaccumulation Of Pollutantsmentioning

confidence: 94%

“…The main limitation in using biosolids and BDB as a soil amendment is the presence of heavy metals and PAH (Table 2). To cause a toxic effect, heavy metals must dissolve in soil solution, be taken up by organisms, and transported to cells where a toxic effect can occur [162]. Through conversion of biosolids to biochar, it is possible to decrease PAH concentrations (Table 2) and the bioavailability of heavy metals (Table 4).…”

Section: Bioavailability and Bioaccumulation Of Pollutantsmentioning

confidence: 99%

“…In a Mediterranean context, Mendez et al [162] evaluated the effects of biochar from pyrolyzed sewage sludge applied on agricultural soil. The evaluated properties included heavy metal solubility and bioavailability in BDB-treated soils compared to those treated with raw sewage sludge.…”

Section: Bioavailability and Bioaccumulation Of Pollutantsmentioning

confidence: 99%

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Land Application of Biosolids-Derived Biochar in Australia: A Review

et al. 2023

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Thermal treatment in Australia is gaining interest due to legislative changes, waste reduction goals, and the need to address contaminants’ risks in biosolids used for agriculture. The resulting biochar product has the potential to be beneficially recycled as a soil amendment. On-farm management practices were reviewed to identify barriers that need to be overcome to increase recycling and examine the role of pyrolysis and gasification in effectively improving the quality and safety of biochar intended for land application. Key findings revealed the following: (1) thermal treatment can effectively eliminate persistent organic pollutants, microplastics, and pathogens, and (2) more than 90% of the total heavy metals content in biosolids may become immobilized when these are converted to biochar, thus reducing their bioavailability following land application. While the reported research on the short-term effects of biosolids-derived biochar suggests promising agronomic results, there is a dearth of information on long-term effects. Other knowledge gaps include the optimization of land application rates, understanding of the rate of breakdown, and the fate of contaminants in soil and water, including heavy metal mobility and redistribution in the environment by processes such as erosion and runoff following land application. An improved understanding of nutrients and contaminants dynamics in soils receiving biosolids-derived biochar is a pre-requisite for their safe use in Australian agriculture, and therefore, it is highlighted as a priority area for future research.

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Section: Bioavailability and Bioaccumulation Of Pollutantsmentioning

confidence: 94%

Section: Bioavailability and Bioaccumulation Of Pollutantsmentioning

confidence: 99%

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Land Application of Biosolids-Derived Biochar in Australia: A Review

et al. 2023

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Influence of pyrolysis temperature on composted sewage sludge biochar priming effect in a loamy soil

et al. 2013

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Potential for Land Application of Biosolids-Derived Biochar in Australia: A Review

Sinha¹,

Marchuk²,

Harris³

et al. 2023

Preprint

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Thermal treatment in Australia is gaining interest due to legislative changes, waste reduction goals, and the need to address contaminants risks in biosolids used for agriculture. The resulting biochar product has the potential to be beneficially recycled as a soil amendment. On-farm management practices were reviewed to identify barriers that need to be overcome to increase recycling and examine the role of pyrolysis and gasification in effectively improving the quality and safety of biochar. Key findings revealed: (1) thermal treatment can effectively eliminate persistent organic pollutants, microplastics and pathogens, and (2) more than 90% of the total heavy metals content in biosolids become immobilized when these are converted to biochar, thus reducing their bioavailability following land application. While reported research on the short-term effects of biosolids-derived biochar suggested promising agronomic results, there is dearth of information on long-term effects. Other knowledge gaps include optimisation of land application rates, understanding of rate of breakdown and fate of contaminants in soil and water, heavy metal mobility in soil and bioaccumulation or transfer to the food chain. Improved understanding of nutrients and contaminants dynamics in soils receiving biosolids-derived biochar is a pre-requisite for their safe use in Australian agriculture, and therefore it is highlighted as priority area for future research.

show abstract

The Effect of Paper Mill Waste and Sewage Sludge Amendments on Acid Soil Properties

Cited by 3 publications

References 1 publication

Land Application of Biosolids-Derived Biochar in Australia: A Review

Land Application of Biosolids-Derived Biochar in Australia: A Review

Influence of pyrolysis temperature on composted sewage sludge biochar priming effect in a loamy soil

Potential for Land Application of Biosolids-Derived Biochar in Australia: A Review

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