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Comparative Study on the Performance of Aboveground and Underground Fixed‐Dome Biogas Digesters
Chemical Engineering & Technology ( IF 2.418 ) Pub Date : 2019-11-25 , DOI: 10.1002/ceat.201900378
KeChrist Obileke; Sampson Mamphweli; Edson L. Meyer; Golden Makaka; Nwabunwanne Nwokolo; Helen Onyeaka

A comparative analysis of aboveground and underground biogas digesters is described in relation to their performance and effect of temperature, pH, and hydraulic retention time. The digestion chamber of the two biogas systems under study was fabricated using high‐density polyethylene (HDPE) plastic, while the inlet and outlet chamber were constructed with bricks. The performance of small‐scale digesters, particularly of the fixed‐dome type, should be improved. Cow dung served as substrate in the performance test. Biogas production from the two systems was measured by a customized gas temperature pressure measurement sensor. Evidently, the insulation provided to the underground digester helped to achieve a more stable internal temperature for the digester.
更新日期:2019-12-19

 

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