A Scientometric Analysis and Bibliometric Review of the Efficiency of Various Constructed Wetlands to Remove Pollutants in Wastewater

Abstract

Water is an essential element in all aspects of life, discharging wastewater into water bodies without processing is a major threat to aquatic ecosystems. To treat wastewater, a sustainable, low-cost, and environmentally friendly technology was used as an alternative to conventional wastewater treatment plants, namely constructed wetlands. This study is to assess and depict the current state of research on to remove pollutants in wastewater using constructed wetlands by reviewing previous studies that have published research on constructed wetlands and their efficiency in removing pollutants from domestic, municipal, and industrial wastewater using the VOS viewer software and conducting a bibliometric analysis using Web of Science core database by looking at previous studies on the use of constructed wetlands in recent years. The Web of Science core database was chosen as the data source for this research using the keyword "constructed wetlands" to search on the Web of Science website for research related to the topic of constructed wetlands, then the data was exported to the Excel program, and data was entered in the VOS viewer program to draw a network that shows the most researchers, countries, universities, and institutes that focused on the subject of constructed wetlands, as well as the most prominent keywords used for this topic. The results showed the knowledge of the researchers who have published research on the subject of constructed wetlands and their cooperation, the organizations and countries that have published research on the subject of wastewater treatment using constructed wetlands. The three most important authors who have published on the topic of constructed wetlands are Zhang, Jian, Xie, Huijun, and Liang, Shuang. The three most important universities that topped the institute's list are Shandong University, Chinese Acad Sci, and University Technol Sydney.  The peoples r china dominates in the number of publications, followed by the USA and Germany on the subject of constructed wetlands, and previous research has shown that constructed wetlands have high efficiency in the treatment of all kinds of wastewater.