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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (3): 61-70.doi: 10.11924/j.issn.1000-6850.casb2022-0126

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Research Progress and Frontier Analyses of Waste Biochar Application from 2000 to 2021

MA Peiyao1(), DENG Zhihua2(), XIANG Ping2, LI Biqing2   

  1. 1 College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224
    2 College of Ecology and Environment, Southwest Forestry University, Kunming 650224
  • Received:2022-02-25 Revised:2022-05-08 Online:2023-01-25 Published:2023-02-01

Abstract:

Biochar is an adsorption material with porous structure, which has a very wide application prospect in improving soil quality and repairing soil pollution. To explore the research layout and future development trend in the application field of waste biochar at home and abroad, relevant documents in the application field of waste biochar from 2000 to 2021 downloaded from the core collection database of Web of Science and the core database of China National Knowledge Infrastructure Network were taken as the research objects. Using CiteSpace and VOSviewer visual analysis software, WOS and CNKI’s own analysis tools, visual analysis was carried out from different angles, such as annual publication volume and publication trend, important research institutions, important journal sources and authors, keyword co-occurrence map and keyword emergence etc., to provide a theoretical basis for the preparation and application of biochar from waste. The results showed that the application of waste biochar was widely concerned at home and abroad. China had the largest proportion of publications in foreign language, indicating that China attached great importance to this field. At present, the focus of this field is agricultural and forestry waste, pyrolysis temperature, adsorption mechanism and so on.

Key words: waste biochar, number of published papers, visual analysis, bibliometric analysis