Abstract
Contaminated soils have negative impacts on human health and the environment in many countries. Stabilization/solidification (S/S) as a time- and cost-effective approach is widely used in the remediation of contaminated soil/sediment. However, there are two main limitations for the conventional S/S method: the high carbon footprint and low compatibility. Waste-derived biochar is a carbon-rich, porous, and fine-grained material that has a high sorption capacity for potentially toxic elements. A green and sustainable remediation strategy that utilizes waste-derived biochar for soil/sediment S/S has attracted great attention among scientists. This chapter systematically summarizes mechanisms of biochar-based S/S and S/S performance of various types of biochar, and discusses the benefits, limitations, challenges, and future trends of biochar-based S/S techniques.
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