The potential of animal manure management pathways toward a circular economy: a bibliometric analysis

• Published in: Environmental science and pollution research international Vol. 29; no. 49; pp. 73599 - 73621
• Main Authors: Hollas, Camila Ester, Rodrigues, Heloisa Campeão, Oyadomari, Vitoria Mitsue Agliardi, Bolsan, Alice Chiapetti, Venturin, Bruno, Bonassa, Gabriela, Tápparo, Deisi Cristina, Abilhôa, Hélen Caroline Zonta, da Silva, João Fernando Ferri, Michelon, William, Cavaler, Jadiane Paola, Antes, Fabiane Goldschmidt, Steinmetz, Ricardo Luís Radis, Treichel, Helen, Kunz, Airton
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2022; Springer Nature B.V
• Subjects: Agricultural runoff; Agricultural wastes; animal manure management; Animal manures; Animal waste disposal; Animal wastes; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; bibliometric analysis; Bibliometrics; Circular economy; Contaminants; decline; Earth and Environmental Science; Ecological effects; Economic analysis; Economics; Ecotoxicology; energy; Energy consumption; Environment; Environmental Chemistry; Environmental Health; Environmental science; Eutrophication; Lakes; Livestock; Manures; nitrogen; Phosphorus; Review Article; S curves; Scientometrics; soil; Soil contamination; Waste Water Technology; Water Management; Water Pollution Control; Water reuse; Nutrient recovery; Water reuse; Livestock activities; Energy recovery; Phosphorus; Nitrogen; Anaerobic digestion
• ISSN: 0944-1344; 1614-7499; 1614-7499
• DOI: 10.1007/s11356-022-22799-y

Improper disposal of animal waste is responsible for several environmental problems, causing eutrophication of lakes and rivers, nutrient overload in the soil, and the spread of pathogenic organisms. Despite the potential to cause adverse ecological damage, animal waste can be a valuable source of resources if incorporated into a circular concept. In this sense, new approaches focused on recovery and reuse as substitutes for traditional processes based on removing contaminants in animal manure have gained attention from the scientific community. Based on this, the present work reviewed the literature on the subject, performing a bibliometric and scientometric analysis of articles published in peer-reviewed journals between 1991 and 2021. Of the articles analyzed, the main issues addressed were nitrogen and phosphorus recovery, energy generation, high-value-added products, and water reuse. The energy use of livestock waste stands out since it is characterized as a consolidated solution, unlike other routes still being developed, presenting the economic barrier as the main limiting factor. Analyzing the trend of technological development through the S curve, it was possible to verify that the circular economy in the management of animal waste will enter the maturation phase as of 2036 and decline in 2056, which demonstrates opportunities for the sector’s development, where animal waste can be an economic agent, promoting a cleaner and more viable product for a sustainable future.