Recent advancements in biochar preparation, feedstocks, modification, characterization and future applications

Q1 Environmental Science

Environmental Technology Reviews Pub Date : 2019-01-01 DOI:10.1080/21622515.2019.1631393

K. Vijayaraghavan

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引用次数: 71

Abstract

ABSTRACT Biochar is a stable carbon-rich product synthesized from biological materials through different heating techniques. The main aim of this review is to evaluate various biochar production methods, parameters affecting the production of biochar, facilities to investigate the composition and structure of biochar, mechanism associated with production of biochar as well as various modification procedures to suit biochar for different applications. Various methods used to synthesize biochar include pyrolysis, torrefaction, gasification, hydrothermal and flash carbonization. Several factors such as feedstock composition and type, pyrolysis conditions such as temperature and time strongly influences the property of synthesized biochar. The physico-chemical properties of biochar strongly influence the role of biochar in several applications such as fuel cells, biosorption, agriculture, supercapacitors, catalyst/support and environmental remediation. It was identified through research efforts that the properties of biochar can be altered using various chemical or physical agents to suit various applications. Thus, the present review consolidates recent advancements in biochar research with special attention towards contaminant remediation and agricultural applications. GRAPHICAL ABSTRACT

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生物炭制备、原料、改性、表征及未来应用的最新进展

摘要生物炭是由生物材料通过不同的加热技术合成的一种稳定的富碳产品。本综述的主要目的是评估各种生物炭生产方法、影响生物炭生产的参数、研究生物炭成分和结构的设施、与生物炭生产相关的机制以及适合不同应用的生物炭的各种改性程序。用于合成生物炭的各种方法包括热解、焙烧、气化、水热和闪速碳化。原料组成和类型、热解条件（如温度和时间）等因素对合成生物炭的性能有很大影响。生物炭的物理化学性质强烈影响生物炭在燃料电池、生物吸附、农业、超级电容器、催化剂/载体和环境修复等应用中的作用。通过研究发现，可以使用各种化学或物理试剂来改变生物炭的性质，以适应各种应用。因此，本综述综合了生物炭研究的最新进展，特别关注污染物修复和农业应用。图形摘要

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Technology Reviews Environmental Science-Water Science and Technology

CiteScore

6.90

自引率

0.00%

发文量