Ecotoxicological assessment of sewage sludge-derived biochars-amended soil

Tomczyk, Beata; Siatecka, Anna; Bogusz, Aleksandra; Oleszczuk, Patryk

doi:10.1016/j.envpol.2021.116484

Cited by 25 publications

(1 citation statement)

References 69 publications

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“…In a study by Lyu et al (2016), the total concentration of PAHs in biochar was found to be inversely proportional to pyrolysis temperature. In general, a low-temperature biochar has a higher PAH content and would therefore cause more toxicity (TOMCZYK et al, 2021). Furthermore, the molar ratios of H/C and O/C have been proposed as an index of toxicity.…”

Section: Ecotoxicological Effects Of Biochar and The Role Of Biochar Propertiesmentioning

confidence: 99%

Syntrophic interactions in anaerobic digestion: how biochar properties affect them?

Johnravindar

Patria

Lee

et al. 2021

Sustainable Environment

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Biochar as a biomass derived, low cost, carbon conductive material is considered as an important supplement in the anaerobic digestion (AD) of organic matter. It functions as an electrical grid to allow direct electron transfer from fatty acid oxidizers to methanogenic archaea, thereby promoting syntophy between various microbial groups and leading to efficient methanogenesis. Specific properties of biochar play an important role in promoting syntrophic interactions in AD. As a physical indicator, surface area, porosity, particle size and surface texture of biochar play an important role in governing microbial attachment and enrichment on biochar. This influences the microbial degradation of fatty acids and their subsequent conversion to methane by methanogens. Chemical properties such as the presence of hydrophobic functional groups, molecular nature and redox active groups on biochar surface promote interaction between biochar and microorganisms and provide an increased degree of electron transfer between the attached microorganisms. The above characteristics depend on feedstock and pyrolysis conditions used for biochar production. Unlike previous reviews, herein the desired physical and chemical properties of biochar that promote syntrophy in AD and the factors that influence them have been discussed in detail. Furthermore, engineering of biochar properties by various activation methods to harness favourable characteristics of biochar as an effective AD additive is described. Such a comprehensive account would be useful for engineering efficient biochar-mediated digestions with enhanced syntrophy and overall AD performance.

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Section: Ecotoxicological Effects Of Biochar and The Role Of Biochar Propertiesmentioning

confidence: 99%

Syntrophic interactions in anaerobic digestion: how biochar properties affect them?

Johnravindar

Patria

Lee

et al. 2021

Sustainable Environment

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Ecotoxicological assessment, in freshwater environment, of wastewater sludge coupled and uncoupled with micro‐polyvinyl chloride on algae and water fleas

Pignattelli,

Provenza,

Rampih

et al. 2024

Water Environment Research

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In the frame of bioeconomy and circular economy, wastewater sludge (WS) could be a good candidate for its use in agriculture as fertilizer, due to its high content of organic matter, N and P, but on the other hand, it is full of toxicants such as heavy metal, microplastics, detergent, antibiotics, and so on that can reach groundwater and water bodies in leachate form. In this study, we have investigated different sludge concentrations in the eluate form, combined and not with PVC on two different freshwater organisms Selenastrum capricornutum and Daphnia magna, using ecotoxicity tests. At the endpoint, we have evaluated inhibition growth rate, oxidative stress, and pigments production for S. capricornutum, while in case of D. magna, we have assessed organism immobilization and development. From our results, it emerged that at the higher WS concentration, there was not inhibition growth rate, while at oxidative stress, it was higher in algae treated with WS and PVC. Higher Chl‐a production was shown for algae treated with 0.3 g/L of sludge coupled with PVC, where higher phaeopigments production were recorded for algae treated with 0.3 g/L of WS. D. magna has shown an opposite trend when compared with algae, where at the highest WS concentrations supplied was corresponding to an increased mortality explaned as the highest immobility percentage.Practitioner Points Wastewater sludge is used in agriculture as fertilizer. PVC microplastic presence and associate ecotoxicity was tested. PVC presence increased oxidative stress in S. capricornutum. D. magna was significantly affected by sludge concentrations supplied.

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Heavy metal stabilization remediation in polluted soils with stabilizing materials: a review

Cui

Duan

et al. 2023

Environ Geochem Health

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Ecotoxicological assessment of sewage sludge-derived biochars-amended soil

Cited by 25 publications

References 69 publications

Syntrophic interactions in anaerobic digestion: how biochar properties affect them?

Syntrophic interactions in anaerobic digestion: how biochar properties affect them?

Ecotoxicological assessment, in freshwater environment, of wastewater sludge coupled and uncoupled with micro‐polyvinyl chloride on algae and water fleas

Heavy metal stabilization remediation in polluted soils with stabilizing materials: a review

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