Figure 2.
The panel a shows the 10 most contributing journal sources by year of publication. Journal of Cleaner Production contributes 48 articles. Waste Management contributes 41 articles. Resources, Conservation and Recycling contributes 29 articles. Science of the Total Environment contributes 23 articles. Journal of Environmental Management contributes 17 articles. Sustainability contributes 16 articles. Waste Management and Research contributes 11 articles. Bioresource Technology contributes 7 articles. International Journal of Life Cycle Assessment contributes 7 articles. Environmental Science and Technology contributes 7 articles. Publication years range from 1999 to 2025. Annual article counts are 2 in 1999 and 2000, 1 in 2002 and 2003, 4 in 2005, 3 in 2006, 1 in 2007 and 2008, 3 in 2009, 8 in 2010 and 2011, 11 in 2012, 10 in 2013, 5 in 2014, 16 in 2015, 13 in 2016, 21 in 2017 and 2018, 19 in 2019, 28 in 2020 and 2021, 31 in 2022, 24 in 2023, 32 in 2024, and 16 in 2025. Panel b shows a keyword co-occurrence map. Life cycle assessment is the largest and most connected keyword. Connected keywords include environmental impact assessment, food waste, climate change, organic waste, waste management, biogas, incineration, sustainability, circular economy, biowaste, energy recovery, biological treatment, source separation, nutrient recovery, kitchen waste, centralized disposal, renewable energy, carbon footprint, multi-criteria analysis, life cycle costing, material flow analysis, systems analysis, emissions, life cycle inventory, nutrient recycling, pyrolysis, biochar, hydrothermal carbonization, gasification, bioethanol, digestate, manure, domestic waste, animal feed, and industrial ecology. Panel c shows the geographical distribution of collected articles across countries and regions. Articles are represented in countries across North America, South America, Europe, Asia, Africa, and Oceania. China has the highest concentration of articles. Other represented countries include the United States, Canada, Brazil, Argentina, the United Kingdom, Spain, France, Germany, Italy, Sweden, Norway, Finland, Turkey, Saudi Arabia, India, Japan, Indonesia, Australia, South Africa, and several additional countries across the mapped regions.Main bibliometric results for a) year of publication and journal source; b) authors’ keywords; c) country of publication
Source: Authors’ own work