Thermal gradient-driven heavy metal speciation and risk evolution in municipal and industrial sludge: a 300–700 °C pyrolysis perspective

Ke Zhao; Chundi Si; Zhang Pei; Yaning Cui

doi:10.1039/d5ra04990c

January 1, 2025RSC AdvancesOpen Access

Thermal gradient-driven heavy metal speciation and risk evolution in municipal and industrial sludge: a 300–700 °C pyrolysis perspective

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Key Points

Speciation of heavy metals shifts during pyrolysis across 300-700 °C, influencing environmental risk.
Key heavy metals monitored include Cu, Zn, Pb, Cd, Ni, and Cr in sludge-derived biochar.
Thermal gradient analysis utilized pyrolysis temperatures to assess risk levels of biochar.
Implications for biochar use highlight need for careful assessment of heavy metal content in environmental applications.

Implication

Analysis showed heavy metals change during pyrolysis of sludge, indicating potential risks in biochar applications.

Abstract

This work investigated the effect of pyrolysis temperatures (300–700 °C) on the speciation distribution and environmental risks of heavy metals (Cu, Zn, Pb, Cd, Ni, Cr) in biochar derived from municipal sludge (MS) and industrial sludge (IS).

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Cite This Study

Zhao et al. (2025) studied this question.

synapsesocial.com/papers/6925572cc0ce034ddc35a7d9 https://doi.org/10.1039/d5ra04990c

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Thermal gradient-driven heavy metal speciation and risk evolution in municipal and industrial sludge: a 300–700 °C pyrolysis perspective

Key Points

Implication

Abstract

Discussion

Cite This Study

Thermal gradient-driven heavy metal speciation and risk evolution in municipal and industrial sludge: a 300–700 °C pyrolysis perspective

Key Points

Implication

Abstract

Discussion

Cite This Study

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