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Bibliometric Analysis; Characteristics and Trends of Refuse Derived Fuel Research

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  • Khadija Sarquah

    (Department of Waste and Resource Management, University of Rostock, 18051 Rostock, Germany
    Berlin School of Technology, SRH Berlin University of Applied Sciences, 10587 Berlin, Germany)

  • Satyanarayana Narra

    (Department of Waste and Resource Management, University of Rostock, 18051 Rostock, Germany
    German Biomass Research Centre, 04347 Leipzig, Germany)

  • Gesa Beck

    (Berlin School of Technology, SRH Berlin University of Applied Sciences, 10587 Berlin, Germany)

  • Edward A. Awafo

    (Department of Agricultural and Bioresources Engineering, University of Energy and Natural Resources, Sunyani P.O. Box 214, Ghana)

  • Edward Antwi

    (Department of Waste and Resource Management, University of Rostock, 18051 Rostock, Germany)

Abstract

Among the sustainable ways of municipal solid waste management (MSW) is energy recovery, particularly into refuse derived fuel (RDF). However, the potential, application, and research of RDF in existing cases is not exhausted. Additional analysis of literature is needed to provide further insights into the area. The evolution of RDF research over the past 30 years is analyzed and presented in this paper. Using a statistical approach, a bibliometric analysis was conducted for research on RDF from the SCOPUS database to assess perspectives and trends and gain a better understanding of the scope of RDF research. The bibliometric analysis tools, co-citation, keyword occurrence, co-authorship, and bibliometric coupling network, were utilized in VOSviewer to map out keywords, collaborations, and citations. The result from the analysis indicated that scholarly works around RDF were largely written in English (92.7%). Journal articles were the most frequently occurring document type, representing 68.5% of the records, followed by conference papers (24.9%). Out of a total of 1184 documents analyzed, the number of publications rose steadily from 26 in 2003 to 102 in 2021. Most publications on RDF were in the subject area of Environmental Science (648), Energy (483), and Engineering (441). Waste Management, Fuel, Waste Research and Management, and the Journal of Cleaner Productions were the sources that contained most of the publications on RDF research. The contributions (number of publications) in the RDF research were largely from the US (176), Italy (97), Japan (90), Germany (86), China (79), and the UK (74), among others. Collaborations were notable between the US, Europe, and the Asian regions (China, India, and Thailand). Conspicuously missing were research contributions from the African region, comparatively, thus emphasizing the need for contributions from such perspectives. The keyword analysis result further showed studies were within knowledge areas of conversion processes, applications, and management. Thermochemical conversion pathways were highly applied to RDF and thus combustion/co-combustion/incineration (717), gasification (224), and pyrolysis (115). Additionally, research on RDF applications was mostly in the cement industry (150) and electricity generation (55). The time incident analysis outlined recent interest and emerging trends in optimization of valorization processes, towards a circular economy and sustainability. Cross-cutting areas of environmental focus (emissions) were observed along the years analyzed. There is a rising focus on indicators for commercialization, environmental impacts, and optimum production from the analysis. This is useful especially for the emerging regions/territory of research contributions. These discussions would potentially maximize the co-benefits of energy generation and eco-environment sustainability via cost benefits deployments suggested for future research. Analyzing the RDF research trends, these findings are useful for the future endeavor of researchers and developers.

Suggested Citation

  • Khadija Sarquah & Satyanarayana Narra & Gesa Beck & Edward A. Awafo & Edward Antwi, 2022. "Bibliometric Analysis; Characteristics and Trends of Refuse Derived Fuel Research," Sustainability, MDPI, vol. 14(4), pages 1-18, February.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:4:p:1994-:d:746271
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    References listed on IDEAS

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    Cited by:

    1. Pan Zhang & Yongjun Du & Sijie Han & Qingan Qiu, 2022. "Global Progress in Oil and Gas Well Research Using Bibliometric Analysis Based on VOSviewer and CiteSpace," Energies, MDPI, vol. 15(15), pages 1-27, July.
    2. Khadija Sarquah & Satyanarayana Narra & Gesa Beck & Uduak Bassey & Edward Antwi & Michael Hartmann & Nana Sarfo Agyemang Derkyi & Edward A. Awafo & Michael Nelles, 2022. "Characterization of Municipal Solid Waste and Assessment of Its Potential for Refuse-Derived Fuel (RDF) Valorization," Energies, MDPI, vol. 16(1), pages 1-15, December.
    3. Joud Hwalla & Jad Bawab & Hilal El-Hassan & Feras Abu Obaida & Tamer El-Maaddawy, 2023. "Scientometric Analysis of Global Research on the Utilization of Geopolymer Composites in Construction Applications," Sustainability, MDPI, vol. 15(14), pages 1-37, July.
    4. Vhuthu Ndou & Isaac Tebogo Rampedi, 2022. "Bibliometric Analysis of Municipal Solid Waste Management Research: Global and South African Trends," Sustainability, MDPI, vol. 14(16), pages 1-21, August.

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