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Updated: Feb 25, 2026

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

Recent developments in biochar utilization as an additive in organic solid waste composting: A review.

Ran Xiao¹, Mukesh Kumar Awasthi², Ronghua Li³

¹College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; School of Plant, Environment & Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70820, USA.

Bioresource Technology

|August 1, 2017

Summary

Biochar amendment significantly enhances organic solid waste composting by improving physical properties, microbial activity, and nutrient content. It also reduces harmful ammonia and greenhouse gas emissions, leading to higher quality compost.

Keywords:

Biochar Composting Organic solid waste

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Area of Science:

Environmental Science
Soil Science
Waste Management

Background:

Biochar amendment is increasingly studied for its impact on organic solid waste composting.
Understanding biochar's role is crucial for sustainable waste management and soil improvement.

Purpose of the Study:

To provide an up-to-date overview of biochar amendment effects on composting processes and compost quality.
To synthesize recent findings on biochar's influence on composting.

Main Methods:

Review of recent scientific literature on biochar application in composting.
Analysis of biochar production, characteristics, and composting principles.
Compilation of data on biochar's effects on compost properties and emissions.

Main Results:

Biochar addition improves compost mixture physicochemical properties.
Enhances microbial activities and organic matter decomposition.
Reduces ammonia (NH3) and greenhouse gas (GHG) emissions.
Upgrades compost quality by increasing nutrient content, maturity, and decreasing phytotoxicity.

Conclusions:

Biochar shows great potential for enhancing composting processes and compost quality.
Further research is needed to elucidate mechanisms and evaluate co-composted biochar compost performance.