What question did this study set out to answer?

The aim is to evaluate how different pyrolysis temperatures affect lead ion removal from water using sewage sludge-derived biochar.

February 12, 2026Environmental Science Advances2 citationsOpen Access

Pyrolysis Temperature Dependence of Pb2+ removal by Sewage Sludge Biochar：characteristics evaluation and adsorption performance

RZRui ZhaoNanjing University of Chinese Medicine XLXin LiHarbin University of Science and Technology XJXiaoxin JiangState Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering

Key Points

The aim is to evaluate how different pyrolysis temperatures affect lead ion removal from water using sewage sludge-derived biochar.
Prepared biochar from sewage sludge at various pyrolysis temperatures (400 – 700 °C).
Conducted adsorption experiments to test lead removal efficiency.
Analyzed the characteristics of biochar, focusing on surface area and functional groups.
Lead removal efficiency varied significantly with pyrolysis temperature.
Higher pyrolysis temperatures improved the specific surface area of biochar, enhancing adsorption capacity.
Optimum temperature for maximum lead removal was identified.

Abstract

Converting sewage sludge into biochar (SSB) offers a promising path for waste reduction and pollution mitigation. This study systematically investigated the effect of pyrolysis temperature (400 – 700 °C) on the...

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