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Advancing the circular economy through the thermochemical conversion of waste to biochar: a review on sawdust waste-derived fuel 通过废弃物热化学转化为生物炭推进循环经济:木屑废弃物衍生燃料研究进展

4区工程技术 Q2 Environmental Science

Biofuels-Uk

Pub Date : 2023-09-13 DOI: 10.1080/17597269.2023.2255007

Ebuka Chizitere Emenike, Kingsley O. Iwuozor, Joshua O. Ighalo, Joy O. Bamigbola, Ebenezer O. Omonayin, Happiness T. Ojo, Joy Adeleke, Adewale George Adeniyi

AbstractBiochar is a solid material that contains a lot of carbon and is created by heating biomass in an environment where there is little or no oxygen. It has become clear that biochar holds great promise for combating climate change, enhancing soil fertility, eliminating pollutants, and promoting effective waste disposal. In particular, sawdust biochar produced via thermochemical processes has drawn a lot of attention because of its affordability and abundant availability. This review paper presents a general summary of the production of sawdust biochar via thermochemical processes, including pyrolysis, hydrothermal carbonization, torrefaction, and gasification. It was observed that the specific yields and performance of these methods vary depending on the feedstock source, process parameters, and equipment used. Additionally, the properties of biochar, such as carbon content, surface area, and stability, also vary depending on the production method. The effects of operating factors on the sawdust-biochar production processes, such as temperature, heating rate, and residence duration, are also covered in the study. While challenges exist, ongoing research aims to improve biochar properties and applications, making it a valuable tool for climate-smart agriculture and sustainable land management.Keywords: Biocharsawdustthermochemical processespyrolysiswaste management Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work received no external funding.

摘要生物炭是一种含有大量碳的固体材料，它是在很少或没有氧气的环境中通过加热生物质而产生的。很明显，生物炭在应对气候变化、提高土壤肥力、消除污染物和促进有效废物处理方面具有巨大的前景。特别是，通过热化学工艺生产的木屑生物炭由于其可负担性和丰富的可用性而引起了很多关注。本文综述了木屑生物炭的热化学生产方法，包括热解、水热炭化、焙烧和气化。据观察，这些方法的具体产量和性能取决于原料来源、工艺参数和使用的设备。此外，生物炭的性质，如碳含量、表面积和稳定性，也因生产方法而异。研究还涵盖了操作因素对木屑-生物炭生产过程的影响，如温度、加热速率和停留时间。尽管存在挑战，但正在进行的研究旨在改善生物炭的特性和应用，使其成为气候智能型农业和可持续土地管理的宝贵工具。关键词:生物炭锯末热化学过程热解废物管理披露声明作者未报告潜在利益冲突。本工作未获得外部资助。

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