Preparation of nano-biochar from conventional biorefineries for high-value applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Bing Song
  • Xuewen Cao
  • Wenran Gao
  • Shazed Aziz
  • Shuai Gao
  • Richen Lin

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number112057
Journal / PublicationRenewable and Sustainable Energy Reviews
Volume157
Online published8 Jan 2022
Publication statusPublished - Apr 2022

Abstract

Nano-biochar presents superior physicochemical properties over bulk biochar such as highly stable and unique nanostructure, high catalytic activity and large specific surface area. A comprehensive understanding of the current nano-biochar research is required while progressing to real-world implementations, including preparation, characteristic properties and targeted applications. This paper provides a state-of-the-art review on nano-biochar research for (1) definition and production methodologies, (2) compositions and properties, (3) high-value applications and performances, (4) environmental concerns, and (5) implications to conventional biorefineries and perspectives. Following a sequence of biochar preparation, size reduction and screening, nano-biochar can be obtained for high-value applications such as a high-performance adsorbent, a carrier of biocatalysts, electrodes in electrochemistry and additives. Compared with bulk biochar, nano-biochar performs better in general uses such as wastewater treatment and soil amendment and promises high-value applications in emerging areas such as electrochemistry and biocatalysis. This review highlights that the preparation of nano-biochar from conventional bioenergy and biorefinery technologies such as thermochemical liquefaction and gasification is promising to generate adding values, contributing to enhanced techno-economic feasibility. Integrating nano-biochar preparation and application with conventional biofuel production is thus highly recommended as a future research endeavour.

Research Area(s)

  • Conventional biorefining, Improved biorefineries, Nano-biochar concepts, Technology integration, Value-adding applications

Citation Format(s)

Preparation of nano-biochar from conventional biorefineries for high-value applications. / Song, Bing; Cao, Xuewen; Gao, Wenran; Aziz, Shazed; Gao, Shuai; Lam, Chun-Ho; Lin, Richen.

In: Renewable and Sustainable Energy Reviews, Vol. 157, 112057, 04.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review