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The shifting research landscape for PAH bioremediation in water environment: a bibliometric analysis on three decades of development

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Abstract

Polycyclic aromatic hydrocarbons (PAHs) with their carcinogenic, teratogenic, and mutagenic effects can cause great damage to the ecosystem and public health when present in water. With bioremediation, PAH contamination in water environment can be greatly reduced in an eco-friendly manner. It has thus become the research focus for many environmental scientists. In this study, a bibliometric analysis on three-decade (1990–2022) development of PAH bioremediation in water environment was conducted from temporal and spatial dimensions using CiteSpace. A total of 2480 publications, obtained from Web of Science core collection database, were used to explore the basic characteristics, hotspots, and prospects of the research area. The results showed that (1) bioremediation/biodegradation of PAHs in water environment has been getting researchers’ attention since 1990, and is gaining even more traction as time goes on. (2) In terms of countries, China and the USA were the major contributors in this research area, while at the institutional level, the Chinese Academy of Sciences has produced the most research results. However, international cooperation across regions was lacking in the field. (3) Environment Science and Technology, Chemosphere, Applied and Environment Microbiology, Journal of Hazardous Materials, and Environment Pollution were the 5 most cited journals in this field. (4) There were three major stages the field has gone through, each with distinct research hotspots, including initial stage (1990–1994), mechanism investigation (1995–2000), and application exploration (2001–2010; 2011–2022). Finally, research perspectives were proposed, covering three directions, namely, bioavailability, immobilization, and viable but nonculturable (VBNC) bacteria.

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Funding

Financial support was from the National Natural Science Foundation of China (No. 52200004), the Scientific Research Foundation of Fuzhou University (No. GXRC-20021), the Middle-aged and Young Lecturer Education Research Project of Fujian Province (No. JAT200044), the Outstanding Youth Fund of Fujian Province in China (No. 2018J06013), and the Open Fund of Fujian Key Laboratory of Electrochemical Energy Storage Materials (No. 2021CN08).

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Mingqian Xia organized the framework of the article, experiments, and wrote the paper. Bo Chen processed the experimental data and modified the article. Gongduan Fan was helpful in polishing language and improved text layout. Sunxian Weng, Rongpeng Qiu, Zhanlin Hong, and Zhongsen Yan contributed to the collection and collation of experimental data and participated in the writing of the paper.

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Correspondence to Gongduan Fan.

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Highlights

• Research related to PAH bioremediation in water environment was reviewed.

•Basic characteristics of published articles (1990 to 2022) were analyzed.

•Research hotspots were extracted by analyzing co-citation references and keywords.

•Three main development phases of the research field were identified.

•Research prospect covering three different directions was proposed.

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Xia, M., Chen, B., Fan, G. et al. The shifting research landscape for PAH bioremediation in water environment: a bibliometric analysis on three decades of development. Environ Sci Pollut Res 30, 69711–69726 (2023). https://doi.org/10.1007/s11356-023-27404-4

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