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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Febriantoko, Ardiansah
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Evaluation of Bio-Drying Cow Dung with Inoculation of Bacillus sp. as Refuse Derived Fuel (RDF) Material Febriantoko, Ardiansah; Jayanegara, Anuraga; Sholeha, Novia Amalia; A'yuni, Qurrota
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Article in Press 2026 (For Upcoming Issue)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Global warming, driven in part by livestock manure emissions, poses a major environmental challenge. Refuse Derived Fuel (RDF) offers a waste-to-energy solution by converting solid cow manure into an energy source. This study investigates the impact of Bacillus sp. inoculation on the bio-drying process of cow dung. The main challenge in processing cow manure into RDF is ensuring the moisture content and calorific value meet the minimum RDF standards. Therefore, a bio-drying process is carried out on cow manure to achieve these required standards. Bio-drying performance was assessed based on drying time, moisture content, pH, and calorific value. The results show that inoculation with Bacillus sp.. at 10⁶ log cfu ml⁻¹ kg⁻¹ yielded the most efficient outcome, achieving the fastest drying time (12 days), lowest moisture content (9.64%), optimal pH (7.8), and highest calorific value (2,656.5 kcal/kg). The findings confirm a direct link between moisture reduction and calorific improvement. Hence, bio-dried cow dung treated with inoculation of Bacillus sp. 106 log cfu ml-1 Kg-1 is recommended as a viable RDF material.
Co-Authors A'yuni, Qurrota Anuraga Jayanegara Sholeha, Novia Amalia