Waste to Energy from Municipal Wastewater Treatment Plants: A Science Mapping
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De la Torre Bayo, Juan Jesús; Martín Pascual, Jaime; Torres Rojo, Juan Carlos; Zamorano Toro, MontserratEditorial
MDPI
Materia
Municipal wastewater Domestic wastewater Waste energy Energy valorization Energy production Energy recovery
Date
2022-12-15Referencia bibliográfica
De la Torre Bayo, J.J... [et al.]. Waste to Energy from Municipal Wastewater Treatment Plants: A Science Mapping. Sustainability 2022, 14, 16871. [https://doi.org/10.3390/su142416871]
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EMASAGRA S.A 4325Abstract
Energy recovery, according to circular economy and sustainable principles, has established
itself as an inevitable field of action in wastewater treatment plants (WWTPs). Energy costs are
forcing the optimization of processes and increases in the development of applicable waste-to-energy
(WtE) technologies. This study aims to analyze the existing knowledge on WtE research in municipal
WWTPs using a systematic literature review and a bibliometric analysis from 1979 to 2021. For
this purpose, Science Mapping Analysis Tool (SciMAT) and VosViewer, two softwares for analyzing
performance indicators and visualizing scientific maps, were used to identify the most relevant
figures in the research. The results show an exponential increase in the number of publications over
time, which has yet to reach a stage of maturity. The analysis of the evolution of the topics exposes
variability in the keywords over the years. The main field of WtE research has focused on sludge
treatment, with technologies ranging from anaerobic digestion to more recently-emerging ones such
as microalgae or membrane technologies. The analysis also identified the need for more publications
on other wastes in WWTPs, which are necessary to achieve zero waste.
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