Methane production enhancement of a family-scale biogas digester using cattle manure and corn stover under cold climates. (June 2021)

• Record Type: Journal Article
• Authors: Abd Allah, W.E.; Tawfik, M.A.; Sagade, Atul A.; Gorjian, Shiva; Metwally, K.A.; El-Shal, Hanan
• Is Part Of: Sustainable energy technologies and assessments. Volume 45(2021)
• Publication Date: 2021-06
• Subjects: Family-scale biogas digester -- Anaerobic co-digestion -- Cattle manure -- Milled corn stover -- Cold climate; Renewable energy sources -- Periodicals; Energy development -- Technological innovations -- Periodicals; Electric power production -- Periodicals; Energy storage -- Periodicals; 333.79
• DOI: 10.1016/j.seta.2021.101163
• Languages: English
• ISSNs: 2213-1388

Abstract

Graphical abstract: Highlights: Performance of household-scale biogas digester in cold climate is improved. Numerical method for preparing the co-digestion slurry is presented. Co-digestion of milled corn stover and cattle manure allows improving C/N ratio. Explicit increase in daily, cumulative and specific methane yield is observed. Enhancement in the average methane content and biogas gained energy is achieved. Abstract: The enhancement in methane production under cold climates is one of the essential prerequisites to enable year-round performance improvement of any biogas plant. In Egypt, the winter is reasonably cold which offers a good opportunity to study the enhancement in the methane yield and corresponding performance improvement of a family-scale biogas digester using the co-digestion technique. This work reports the field performance of floating-dome type biogas digester using anaerobic co-digestion (AcoD) of cattle manure (CM) with a milled corn stover (CS). The performance of AcoD is compared with the performance of anaerobic mono-digestion (AmoD) of CM under winter conditions. Moreover, a numerical method for preparing the digested slurry is defined for the ease of the farmers. Results revealed that using AcoD was led to a significant increase in the average daily, cumulative, and specific methane yield by 40.30, 42.43, and 39.65%, respectively over AmoD. Additionally, AcoD gave an explicit increment in the average methane volume, average daily, and total gained biogas energy by 11.42, 40.16, and 42.43%, respectively over AmoD. Hence, the major findings of the present work proved that the co-digestion of CM and CS improves the performance of biogas digester under open-field conditions in the winter season.