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Global Academic Journal of Agriculture and Biosciences
Volume-7 | Issue-06
Original Research Article
Waste-to-Energy: Sustainable Conversion of Sewage Sludge
Malami Shuaibu, Isah Saidu, Aminu Yakubu Zubairu, Muhammad Nasir
Published : Nov. 28, 2025
DOI : https://doi.org/10.36348/gajab.2025.v07i06.003
Abstract
Sewage sludge, a major by-product of wastewater treatment, presents both environmental challenges and opportunities for renewable energy recovery. This study evaluates the fuel potential of sewage sludge through proximate and ultimate analyses conducted on samples collected from a wastewater treatment plant. The results show a carbon content of 35.61%, low sulphur content of 1.15%, and a calorific value of 20,999.14 kJ/kg, indicating strong suitability for energy conversion. Favorable volatile matter and elemental composition further support its use as a biomass feedstock. The findings demonstrate that sewage sludge can serve as a viable resource for waste-to-energy technologies including pyrolysis, gasification, and anaerobic digestion. Further pilot-scale investigations are recommended to assess practical efficiency and optimize conversion processes.

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