Research progress of biochar’s application in environmental remediation based on bibliometrics
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摘要: 基于文献计量学,对近年来受到广泛关注的生物炭用于环境修复的国内外相关成果进行定量和定性分析,梳理研究总体情况及下一步重点和热点研究方向。结果显示:2009年1月1日—2019年9月1日,国内外共发表相关Science Citation Index Expanded(SCI-E)源论文1 272篇,相关文章数量总体呈逐年递增的趋势,年均增长率约273.67%;中国的发文总量及独立发文量均位居榜首,总量达617篇(48.51%);发文量前15的作者中40%来自中国,但高被引文献较少。土壤修复、吸附性、重金属等为该领域的研究热点。纳米零价铁、表面络合和固定重金属是生物炭环境修复研究的3个主要方向。推测生物炭修复环境中新兴污染物、土壤改良、合成生物炭基纳米复合材料将成为未来研究热点。降低成本实现生产和工艺集成转型,系统全面地研究生物炭与污染物作用机制,实现生物炭的回收再利用以及制定生物炭标准化施用准则等可作为进一步研究重点。Abstract: Based on bibliometrics, a quantitative and qualitative analysis of the achievements of biochar applications in environmental remediation both at home and abroad, which had been widely concerned in recent years were conducted, and the overall situation of the research and the future key and hot research directions sorted out. The results showed that a total of 1 272 related Science Citation Index Expanded (SCI-E) source papers were published from January 1, 2009 to September 1, 2019. The number of relevant articles increased year by year, with an average annual growth rate of about 273.67%. China’s total number of publications and independent publications ranked the first, with a total of 617 articles (48.51%). 40% of the top 15 authors were from China. However, there were fewer high-cited articles. The analysis direction showed that soil remediation, adsorption and heavy metals, etc. were the research hotspots in this field. The cluster analysis showed that nano-zero-valent iron, surface complexation, and fixed heavy metals were the three main research directions in the field of biochar enhanced remediation. It was suggested that biochar remediation of emerging pollutants in the environment, soil improvement and synthetic biochar-based nanocomposites might become the potential research hotspots in the future. And reducing costs to realize the transformation of production and process integration, performing systematic and comprehensive researches on the mechanism of biochar and pollutants, realizing the recycling and reuse of biochar, and formulating standardized application guidelines for biochar, etc. could be the focuses of further research.
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Key words:
- biochar /
- environmental remediation /
- bibliometric /
- research trend /
- research direction
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