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Hydrogen production from wastewater, storage, economy, governance and applications: a review

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Abstract

In the context of climate change, most of the actual dihydrogen production is not sustainable with about 96% of the 60 million tons of dihydrogen produced annually generated by reforming of fossil fuels, calling for cleaner methods of dihydrogen production. Here we review dihydrogen production from wastewater with focus on biological methods, electrochemical methods, dihydrogen storage, techno-economic aspects, governance and applications. Methods include fermentation, photolysis, photocatalysis, electrolysis and supercritical water gasification. Applications comprise refining crude oil, ammonia production, the food industry, metal extraction, pharmaceuticals, fuel cells, combustion engines, power generation and energy carrier.

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Acknowledgements

Mr Mohamed Abouzid is a participant of STER Internationalisation of Doctoral Schools Programme from NAWA Polish National Agency for Academic Exchange No. PPI/STE/2020/1/00014/DEC/02.

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AME contributed to conceptualization, methodology, investigation, data curation, and writing original draft. MGE, AH, ANS, DME-S, AM, and MA contributed to methodology, investigation, drawing, data curation, and writing original draft. KZE performed review, writing, and editing.

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Correspondence to Ahmed M. Elgarahy, M. G. Eloffy, Ahmed Hammad, Ayman N. Saber, Dina M. El-Sherif, Ahmed Mohsen or Khalid Z. Elwakeel.

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The authors declare that the manuscript was not published (and is not considered elsewhere for publication), that this is an original contribution, and that the Acknowledgment reported at the end of the manuscript is not creating any conflict of interest.

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Elgarahy, A.M., Eloffy, M.G., Hammad, A. et al. Hydrogen production from wastewater, storage, economy, governance and applications: a review. Environ Chem Lett 20, 3453–3504 (2022). https://doi.org/10.1007/s10311-022-01480-3

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  • DOI: https://doi.org/10.1007/s10311-022-01480-3

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