A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biochar: An Effective Amendment for Remediating Contaminated Soil
Soil is one of the most fundamental resources for agricultural production systems. Besides serving as the main medium for crop growth, soils sustain the productivity of plants and animals, maintain or enhance the quality of water and air, and support human health and habitation, within both natural and managed ecosystem boundaries (Sun et al. 2001; Zhou and Song 2004). However, soil quality is now seriously threatened by anthropogenic contamination, which may pose unacceptable ecological risks to biota and human beings. In China, more than 2 × 107 ha of farmland have been contaminated with heavy metals (Wei and Yang 2010), and this has led to a sharp decrease in crop production and food quality in recent decades (Gu et al. 2003; Zhong and Wu 2007). Therefore, remediating soils to reduce soil contamination and to minimize downstream damage is essential (Powlson et al. 2011). A range of remedial techniques have been developed to address soil contamination. These include soil washing, soil vapor extraction, land-farming, soil flushing, ion exchanges, phytoremediation, bioremediation, and ecological remediation (Zhou and Song 2004). However, such traditional methods, when applied in situ are usually expensive and may create new problems, such as fertility loss and soil erosion (Khan et al. 2004; Kumpiene et al. 2008). Therefore, new alternatives are being sought (Sun et al. 2001). One new technique worthy of attention is soil stabilization/solidification (Zhou and Song 2004). This method offers an approach that may be less environmentally disruptive and less expensive, and hence potentially attractive as a future option.
Biochar: An Effective Amendment for Remediating Contaminated Soil
Soil is one of the most fundamental resources for agricultural production systems. Besides serving as the main medium for crop growth, soils sustain the productivity of plants and animals, maintain or enhance the quality of water and air, and support human health and habitation, within both natural and managed ecosystem boundaries (Sun et al. 2001; Zhou and Song 2004). However, soil quality is now seriously threatened by anthropogenic contamination, which may pose unacceptable ecological risks to biota and human beings. In China, more than 2 × 107 ha of farmland have been contaminated with heavy metals (Wei and Yang 2010), and this has led to a sharp decrease in crop production and food quality in recent decades (Gu et al. 2003; Zhong and Wu 2007). Therefore, remediating soils to reduce soil contamination and to minimize downstream damage is essential (Powlson et al. 2011). A range of remedial techniques have been developed to address soil contamination. These include soil washing, soil vapor extraction, land-farming, soil flushing, ion exchanges, phytoremediation, bioremediation, and ecological remediation (Zhou and Song 2004). However, such traditional methods, when applied in situ are usually expensive and may create new problems, such as fertility loss and soil erosion (Khan et al. 2004; Kumpiene et al. 2008). Therefore, new alternatives are being sought (Sun et al. 2001). One new technique worthy of attention is soil stabilization/solidification (Zhou and Song 2004). This method offers an approach that may be less environmentally disruptive and less expensive, and hence potentially attractive as a future option.
Biochar: An Effective Amendment for Remediating Contaminated Soil
Reviews Env.Contamination(formerly:Residue Reviews)
Whitacre, David M. (editor) / Kong, Lu-Lu (author) / Liu, Wei-Tao (author) / Zhou, Qi-Xing (author)
2013-09-07
17 pages
Article/Chapter (Book)
Electronic Resource
English
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