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Updated: Nov 30, 2025
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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
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Using corncob-based biochar to intercept BTEX in stormwater filtration systems.
Huannan Wang1, Dandan Yan2, Huan Zeng3
1College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Summary
Corncob biochar effectively adsorbs benzene, toluene, ethylbenzene, and xylenes (BTEX) in stormwater. This study suggests optimizing biochar filters for pollutant biodegradation, enhancing water quality.
Area of Science:
- Environmental Science
- Materials Science
- Water Treatment
Background:
- Stormwater runoff often contains harmful pollutants like BTEX.
- Biochar derived from agricultural waste shows potential for pollutant removal.
Purpose of the Study:
- To evaluate corncob biochar for BTEX adsorption in stormwater filtration.
- To investigate the adsorption mechanisms and transport dynamics of BTEX on biochar.
- To assess the feasibility of using biochar in practical stormwater management systems.
Main Methods:
- Batch adsorption experiments to determine kinetics, isotherms, and thermodynamics.
- Dynamic transport experiments and model simulations to assess filtration performance.
- Monte Carlo uncertainty analysis to identify key influencing factors.
Main Results:
- Corncob biochar demonstrated significant BTEX adsorption, a spontaneous and endothermic process.
- Adsorption kinetics were influenced by BTEX concentration, active sites, and contact time.
- Filter hydraulic conductivity and biochar adsorption kinetics were critical for BTEX interception.
Conclusions:
- Corncob biochar is a viable material for BTEX removal in stormwater.
- Effective pollutant attenuation requires integrating biochar adsorption with biodegradation processes.
- Further research should focus on optimizing biochar filter design for enhanced pollutant removal.
