Research Trends in Valorization of Waste Glycerol-derived from Biodiesel: A Bibliometric Perspective (2017-2024)

Abstract

This bibliometric analysis investigates global research trends in glycerol waste utilization, spanning 2017 to 2024, leveraging Scopus data and VOSviewer software for comprehensive insights. Driven by the dual imperatives of environmental concerns and economic potential, research on this biodeisel byproduct has witnessed significant growth. This surge peaked in 2023, followed by a slight decline potentially attributable to external factors like the COVID-19 pandemic and shifts in global research priorities. The analysis reveals a geographically diverse research landscape, with China, India, Brazil, and Malaysia emerge as leading contributors, highlighting widespread global interest. Key research themes indentified include biofuel production, enzymatic conversion, and the development of novel catalyst for glycerol transformation. This themes highlight the interdisciplinary nature of the field, drawing upon expertise from biotechnology, chemical engineering and materials science. The analysis identifies critical research gaps and emphasizes the need for continued research, international collaboration, and strategic funding to optimize glycerol waste utilization processes. By illuminating current trends and future directions in glycerol waste valorization, this study provides valuable insights for researchers, policymarkers, and industry stakeholders invested in environmental sustainability, economic development, and  global resource management.