Knowledge graph and development hotspots of biochar as an emerging aquatic antibiotic remediator: A scientometric exploration based on VOSviewer and CiteSpace
文献类型： 外文期刊
作者： Liu, Xiaojing 1 ; Yuan, Jianyang 2 ; Feng, Yanfang 1 ; Zhang, Zhiyong 1 ; Tang, Linyi 4 ; Chen, Haoming 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Key Lab Agro Environm Downstream Yangtze Plain, Nanjing 210014, Jiangsu, Peoples R China
2.Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Nanjing 210094, Jiangsu, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm Sci, Nanjing 210014, Jiangsu, Peoples R China
4.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
关键词： Biochar; Antibiotic remediation mechanism; Persulfate activation; Bibliometrics; Hot directions
期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.0； 五年影响因子：7.9 ）
ISSN： 0301-4797
年卷期： 2024 年 360 卷
页码：
收录情况： SCI
摘要： As an emerging material in the field of environmental remediation, biochar produced by carbonisation of organic solid waste has been widely used in the remediation of antibiotic wastewater due to its environmental friendliness and excellent adsorption properties. This study analyses the current literature in the field in a comprehensive and scientific manner using CiteSpace and VOSviewer technologies. Between 2011 and 2023, a total of 1162 papers were published in this domain, spanning three distinct stages: applied methods, mechanism investigation, and enhanced improvement. The results of keyword clustering indicate that the remediation of antibiotics complexed with multiple pollutants by biochar is the main research topic, followed by the remediation of antibiotics by biochar in combination with other technologies. Furthermore, drawing from current research hotspots in antibiotic remediation using biochar, this study identified the pivotal mechanisms involved: (1) The primary mechanisms by which raw biochar remediates antibiotics include it-it electron donor-acceptor interactions, hydrophobic interactions, electrostatic interactions, hydrogen-bonding, and pore filling. (2) Steam activation, acid/base, metal salt/metal oxide, and clay mineral modification can improve the physical/ chemical properties of biochar, enhancing its adsorptive removal of antibiotics. (3) Biochar activated persulfate and degraded antibiotics via free radical pathways (SO4-center dot, center dot OH and O-2(-)center dot) as well as non-free radical pathways (O-1(2) and electron transfer). In addition, the challenge and prospect of biochar engineering applications for antibiotic remediation lies in improving the main mechanism of antibiotic remediation by biochar. The prospective utilization of biochar in enhancing the remediation of antibiotic-related pollutants holds tremendous value for the future.
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