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Net-zero carbon condition in wastewater treatment plants: A systematic review of mitigation strategies and challenges

Abstrakt

The wastewater sector accounts for up to 7 and 10% of anthropogenic CH4 and N2O emissions, respectively. Nowadays wastewater treatment plants are going through a paradigm shift to approach a net-zero carbon condition. Numerous ongoing measures have taken place to identify the sources of greenhouse gases and minimize the carbon footprint. This paper systematically reviews all known practices leading towards net-zero carbon wastewater treatment. The greenhouse gas emissions from the wastewater sector are identified and carbon footprint quantification tools, such as reliable models and emission factors are compared. The direct process emissions can contribute to over 60% of the carbon footprint in wastewater treatment plants, while around 30% of the carbon footprint is due to energy-related indirect emissions. Therefore, greenhouse gas mitigation via process optimization and energy usage in wastewater treatment plants are comprehensively described. The implantation of novel nitrogen removal processes can reduce both greenhouse gas emissions and energy consumption. Other techniques such as source separation systems can potentially allow mitigation of N2O emissions by 60% while avoiding energy-intensive nitrogen fertilizer production. Nutrient recovery methods are another approach which offer negative value for the net carbon footprint. Recovering N2O for energy production is a promising method which can lead to both direct and indirect carbon footprint reductions. Ultimately, to achieve full decarbonization any remaining emissions need to be offset, including carbon footprint of chemicals usage and

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Wersja publikacji
Accepted albo Published Version
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.rser.2023.113638
Licencja
Creative Commons: CC-BY otwiera się w nowej karcie

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
RENEWABLE & SUSTAINABLE ENERGY REVIEWS nr 185,
ISSN: 1364-0321
Język:
angielski
Rok wydania:
2023
Opis bibliograficzny:
Maktabifard M., Al-Hazmi H., Szulc P., Mousavizadegan M., Xu X., Zaborowska E., Li X., Mąkinia J.: Net-zero carbon condition in wastewater treatment plants: A systematic review of mitigation strategies and challenges// RENEWABLE & SUSTAINABLE ENERGY REVIEWS -Vol. 185, (2023), s.113638-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.rser.2023.113638
Źródła finansowania:
Weryfikacja:
Politechnika Gdańska

wyświetlono 118 razy

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