A review on recent advances of biochar from agricultural and forestry wastes: Preparation, modification and applications in wastewater treatment

Shixin Yu, Wen Zhang, Xiaowan Dong, Fangshu Wang, Wen Yang, Changqing Liu, Dong Chen

Research output: Contribution to journalReview articlepeer-review

9 Scopus citations

Abstract

Biochar, an incredibly versatile and functional biomass material, has garnered significant attention for its myriad applications in the field of wastewater treatment as adsorbents and agriculture as a soil amendment. This paper provides a summary of different feedstock materials for biochar production, physicochemical properties, preparation methods, and major factors in the preparation process. Furthermore, different strategies such as surface modification were discussed to optimize the properties and capabilities of biochar. Biochar derived from agricultural and forestry waste has demonstrated promising performance in the removal of pollutants through various mechanisms, including adsorption, advanced oxidation, bio-enzymatic treatment, and membrane processes. For example, they have good results (close to 100%) against dyes (Acid orange 7 (AO7), methylene blue (MB)), antibiotics (Sulfamethoxazole (SMX)), heavy metals (Cr(VI)). However, the widespread commercial adoption of this technology has been hindered by several challenges, including high energy costs, practicality and stability concerns related to biochar, and potential harmful effects associated with chemical modification. By addressing these hurdles through ongoing research and innovation, biochar-based solutions can be further developed and optimized for widespread adoption in environmental remediation and sustainable waste management practices.

Original languageEnglish (US)
Article number111638
JournalJournal of Environmental Chemical Engineering
Volume12
Issue number1
DOIs
StatePublished - Feb 2024

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Pollution
  • Process Chemistry and Technology

Keywords

  • Agriculture and forestry waste
  • Biochar
  • Modification
  • Preparation
  • Wastewater treatment

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