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Polycyclic aromatic hydrocarbons occurrences in biomass char and its mitigation approaches: A mini review

Mohd. Nor Azman, Nur Aina Najwa and Mohd. Asmadi, Mohd. Asmadi and Saidina Amin, Nor Aishah and Shamjuddin, Amnani and Mohammad Zainol, Muzakkir and Phaiboonsilpa, Natthanon and Kawamoto, Haruo (2023) Polycyclic aromatic hydrocarbons occurrences in biomass char and its mitigation approaches: A mini review. ChemBioEng Reviews, 10 (4). pp. 462-479. ISSN 2196-9744

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Official URL: http://dx.doi.org/10.1002/cben.202200031

Abstract

Biochar is a porous fine-grained substance produced from the pyrolysis technology of biomass that can be commercially used as a soil conditioner to promote soil fertility. Biochar is characterized by high carbon content, stability, and porosity. However, organic pollutants residue of polycyclic aromatic hydrocarbons (PAHs) is also formed during the pyrolysis of biochar. The high concentration of PAHs adversely degrades the quality of biochar for soil amendment application. Meanwhile, highly toxic-PAHs concentration may pose a potential threat to both human health and the environment. The total PAHs yield is mainly influenced by the pyrolysis condition and feedstock resource. This review aims to discuss the conversion pyrolysis technology of biochar and factors that may influence the PAHs formation. The key research findings from this literature will lead to some strategies to minimize the PAHs compound in biochar by controlling the pyrolysis conditions through higher pyrolysis temperature, carrier gas flow, and prolonged pyrolysis time or by selecting suitable feedstock with lower lignin content.

Item Type:Article
Uncontrolled Keywords:Biochar, Mitigation Approaches, Polycyclic Aromatic Hydrocarbons, Pyrolysis, Toxicity
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:105877
Deposited By: Widya Wahid
Deposited On:20 May 2024 07:24
Last Modified:20 May 2024 07:24

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