Research status and development trend of the technology for arsenic removal from groundwater

To clarify the research status and future development trend of arsenic removal from groundwater, the bibliometric method was used to analyze the literature on arsenic removal from groundwater published in the Web of Science (WoS) database from 2008 to 2020, and the comprehensive analysis was conducted from the aspects of the annual number of articles published, publishing organizations, journals, authors, and keywords. The results indicated that: in WoS database, there were 1 501 research papers on arsenic removal from groundwater, and the annual number of publications was on an overall upward trend; the top three countries in terms of publication volume were China, the United States and India; a total of 1 503 research institutions and 4 875 authors participated in the research of arsenic removal from groundwater, in which universities were the main research bases, and university teachers, postgraduate students werethe main force of the research. Keywords analysis showed that the adsorption and electrocoagulation technology were the mainstream methods for arsenic removal from groundwater, the zero-valent iron materials were popular adsorbents applied in the research from 2008 to 2020. At the same time, the emergence analysis showed that the preparation of binary or even multiple oxides and nanocomposites would become the frontier hotspot in the research of arsenic removal from groundwater.