Enhancing Biogas Production from Lime Soaked Corn Cob Residue

TAWAF ALI SHAH, Tawaf Ali Shah, Romana Tabassum

Abstract


This study assessed the impact of lime (Ca(OH)2) soaking pretreatment on biomass digestibility and potential of biogas production compare to untreated corn cob. Corn cob was soaked for different time of incubation, 7, 15, and 30 days. Scanning electron micrograph perceived destruction in the morphology of treated corn cob. The highest cumulative biogas of 360.5, 305.4, 218.6 NmL/gVS was obtained from 30, 15, 7 days pretreated corn cob respectively, which was 2-times higher than the cumulative biogas produced from the untreated corn cob 115.1 NmL/gVS. The best result for the methane yield (136.8 NmL/gVS) was obtained for 30 days soaking. The present study suggested that soaking with Ca(OH)2 for longer time is effective for increasing digestibility of agriculture waste biomass and improving biogas production.

  


Keywords


Anaerobic digestion; digestibility; biogas; corn cob.

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DOI (PDF): https://doi.org/10.20508/ijrer.v8i2.7254.g7365

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