Role of biochar on composting of organic wastes and remediation of contaminated soils—a review

Biochar is produced by pyrolysis of biomass residues under limited oxygen conditions. In recent years, biochar as an amendment has received increasing attention on composting and soil remediation, due to its unique properties such as chemical recalcitrance, high porosity and sorption capacity, and l...

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Bibliographic Details
Published in:Environmental science and pollution research international 2017-07, Vol.24 (20), p.16560-16577
Main Authors: Wu, Shaohua, He, Huijun, Inthapanya, Xayanto, Yang, Chunping, Lu, Li, Zeng, Guangming, Han, Zhenfeng
Format: Article
Language:English
Subjects:
Aging (metallurgy)
Air pollution
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biomass
Charcoal
Community structure
Composting
Decomposition
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Pollution
Environmental science
Greenhouse gases
Heavy metals
Humification
Microorganisms
Nitrogen
Organic matter
Organic soils
Organic wastes
Pesticides
Plant growth
Pollutants
Porosity
Pyrolysis
Remediation
Residues
Review Article
Soil
Soil contamination
Soil Pollutants
Soil pollution
Soil porosity
Soil remediation
Sorption
Surface area
Waste Water Technology
Wastes
Water Management
Water Pollution Control
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Summary:Biochar is produced by pyrolysis of biomass residues under limited oxygen conditions. In recent years, biochar as an amendment has received increasing attention on composting and soil remediation, due to its unique properties such as chemical recalcitrance, high porosity and sorption capacity, and large surface area. This paper provides an overview on the impact of biochar on the chemical characteristics (greenhouse gas emissions, nitrogen loss, decomposition and humification of organic matter) and microbial community structure during composting of organic wastes. This review also discusses the use of biochar for remediation of soils contaminated with organic pollutants and heavy metals as well as related mechanisms. Besides its aging, the effects of biochar on the environment fate and efficacy of pesticides deserve special attention. Moreover, the combined application of biochar and compost affects synergistically on soil remediation and plant growth. Future research needs are identified to ensure a wide application of biochar in composting and soil remediation. Graphical abstract ᅟ
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-017-9168-1