Abstract
With rapid development of energy, information, and communication technology, e-waste problem has become one of the global issues to be settled urgently. The main features on publication years, journals, countries and institutions, authors, keywords, and content types of the 100 most-cited articles on e-waste had been unfolded in this research. The direction and way forward were illustrated, the trends to date were demonstrated, and the terrain and pathways were evaluated on the research of e-waste. Bibliometric analysis method was applied to analyze various attributes on the 100 most-cited articles which were retrieved from WoSCC on May 25, 2021, by utilizing the software tools Microsoft Excel 2016 and VOS viewer 1.6.9. The publication year and citation number of the 100 articles ranged between 2003 and 2017 and from 83 to 925, respectively. Environmental Science & Technology (n=17) published the maximum articles. Waste Management, Journal of Hazardous Materials, and Environmental Science & Technology were the core journals on e-waste. One hundred twenty-three institutions and 25 countries were involved in publishing the 100 articles. Three hundred seventy authors contributed to the 100 articles in total. A total of 267 keywords occurred in the 100 articles. The keywords "e-waste" and "recycling" held the highest occurrences. The study content of the 100 articles could be classified into four types including the characteristic-and-property type, the environment-and-health type, the management-and-economic type, and the technique-and-processing type. Overall completeness and applicability of the evidence found in this study were verified sufficiently; the potential biases in the review process were also considered. The innovations of the research from the past bibliometric analysis work on e-waste were stated, and the implication for practice and research of this study were explained as well. 2007, 2008, and 2009 were a peak of the researches on e-waste, while the recent years were experiencing a valley. China and its institutions were most influential in this field on e-waste. India was becoming more and more influential on e-waste research in the world. Nigeria was the research center in Africa, and Brazil was the research center in Latin America. Wong Minghung was the most important expert on e-waste. The impact on environment and human being's health was the hot topic of researches on e-waste; the characteristic and property of e-waste were studied not enough. The researches of technique and processing would be the direction and way forward in the study field on e-waste. The characteristic and property on e-waste would need more attention to be researched. The researchers could develop new pathways based on and beyond the four types of content evaluated in this research.
Highlights
Nowadays, with electric and semiconductor technologies making a tremendous advancement compared with twenty years ago which made the consumer demand for electrical energy and information devices grow at an incredible speed, the global countries and districts are being urgent to resolve the tough problem of e-waste. (Ongondo et al 2013)Electrical and Electronic Equipment (EEE) is usually defined as items or wares which are made with electrical or electronic parts
E-waste is defined as the EEEs which have been abandoned as waste or rubbish without reusing( Wath Sushant B et al 2011; Sajid Muhammad et al 2019)
With rapid progress of communication and information technology, EEEs are increasingly equipped within the devices of the Internet of Things (IoT) (Zhao Jindong, Yue Xingzuo. 2020), artificial intelligence (AI) (Wang Xiangming et al 2018) etc
Summary
With electric and semiconductor technologies making a tremendous advancement compared with twenty years ago which made the consumer demand for electrical energy and information devices grow at an incredible speed, the global countries and districts are being urgent to resolve the tough problem of e-waste. Electrical and Electronic Equipment (EEE) is usually defined as items or wares which are made with electrical or electronic parts. The application of e-waste is gradually expanded to traditional wares, for instance clothes, skin care and furniture With rapid progress of communication and information technology, EEEs are increasingly equipped within the devices of the Internet of Things (IoT) With rapid progress of communication and information technology, EEEs are increasingly equipped within the devices of the Internet of Things (IoT) (Zhao Jindong, Yue Xingzuo. 2020), artificial intelligence (AI) (Wang Xiangming et al 2018) etc
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