Strategic use of crop residue biochars for removal of hazardous compounds in wastewater

[Display omitted] Crop residues are affordable lignocellulosic waste in the world, and a large portion of the waste has been burned, releasing toxic pollutants into the environment. Since the crop residue is a carbon and ingredient rich material, it can be strategically used as a sorptive material f...

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Bibliographic Details
Published in:Bioresource technology 2023-11, Vol.387, p.129658-129658, Article 129658
Main Authors: Cho, Seong-Heon, Jung, Sungyup, Park, JongHyun, Lee, Sangyoon, Kim, Youkwan, Lee, Jechan, Fai Tsang, Yiu, Kwon, Eilhann E.
Format: Article
Language:English
Subjects:
Agricultural waste
Circular bioeconomy
Pyrolysis
Waste-to-resource
Water remediation
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Summary:[Display omitted] Crop residues are affordable lignocellulosic waste in the world, and a large portion of the waste has been burned, releasing toxic pollutants into the environment. Since the crop residue is a carbon and ingredient rich material, it can be strategically used as a sorptive material for (in)organic pollutants in the wastewater after thermo-chemical valorization (i.e., biochar production). In this review, applications of crop residue biochars to adsorption of non-degradable synthetic dyes, antibiotics, herbicides, and inorganic heavy metals in wastewater were discussed. Properties (porosity, functional groups, heteroatom, and metal(oxide)s, etc.) and adsorption capacity relationships were comprehensively reviewed. The current challenges of crop residue biochars and guidelines for development of efficient adsorbents were also provided. In the last part, the future research directions for practical applications of the crop residue biochars in wastewater treatment plants have been suggested.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2023.129658