期刊
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
卷 47, 期 10, 页码 795-876出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2017.1328918
关键词
Contaminants; immobilization; pyrogenic carbon; soil
资金
- CRC CARE (Cooperative Research Centre for Contamination Assessment and Remediation of the Environment)
Pyrogenic carbon (PyC), including soil native PyC and engineered PyC (biochars), is increasingly being recognized for its potential role as a low-cost immobilizer of contaminants in soils. Published reviews on the role of soil native PyC as a sorbent in soils have so far focused mainly on organic contaminants and paid little or no attention to inorganic contaminants. Further, a comprehensive review on the production of both natural PyC and engineered PyC (biochars), mechanisms involved, and factors influencing their role as soil contaminant immobilizer is so far not available. The objective of this review is thus to systematically summarize the sources, formation, and properties of PyC, including its quantification in soils, followed by their roles in the immobilization of both organic and inorganic contaminants in soils. Effectiveness of PyC on bioavailability, leaching, and degradation of soil contaminants was summarized. Notably, the mechanisms and factors (for the first time) influencing the immobilization processes for soil contaminants were also extensively elucidated. This review helps better understand and design PyC for soil contaminant immobilization.
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