Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Nanjing, Jiangsu, 210014, China; Institute of Agricultural Resource and Environmental Sciences, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, 210014, China.
School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, China.
J Environ Manage. 2024 Jun;360:121165. doi: 10.1016/j.jenvman.2024.121165. Epub 2024 May 17.
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 π-π 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 (SO•, •OH and O•) as well as non-free radical pathways (O 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.
作为环境修复领域的一种新兴材料，由有机固体废弃物碳化产生的生物炭由于其环境友好性和优异的吸附性能，已广泛应用于抗生素废水的修复中。本研究采用 CiteSpace 和 VOSviewer 技术，对该领域的现有文献进行了全面、科学的分析。在 2011 年至 2023 年期间，该领域共发表了 1162 篇论文，分为三个不同阶段：应用方法、机制研究和增强改进。关键词聚类结果表明，生物炭对多种污染物复合抗生素的修复是主要研究课题，其次是生物炭与其他技术结合修复抗生素。此外，本研究从生物炭修复抗生素的当前研究热点中，确定了关键机制：（1）原始生物炭修复抗生素的主要机制包括π-π 电子供体-受体相互作用、疏水力、静电相互作用、氢键和孔填充。（2）蒸汽活化、酸碱、金属盐/金属氧化物和粘土矿物改性可以改善生物炭的物理/化学性质，增强其对抗生素的吸附去除能力。（3）生物炭活化过硫酸盐并通过自由基途径（SO•、•OH 和 O•）和非自由基途径（O 和电子转移）降解抗生素。此外，生物炭在抗生素修复工程应用中的挑战和前景在于改善生物炭修复抗生素的主要机制。生物炭在增强抗生素相关污染物修复方面的预期利用对未来具有巨大价值。
