Abstract
The spent coffee grounds (SCG) were acidogenic fermented and it used as a co-feedstock in the anaerobic co-digestion process. After mixing sewage sludge and acidogenic fermented SCG in a ratio of 7:3 (SF2), the effect on biogas production was observed. The cumulative biogas production during 30-day digestion time was determined 705.28 mL for SF1 (only sewage sludge) and 1891.98 mL for SF2, indicating that SF2 produced about 2.68 fold more cumulative biogas. The methane content in produced biogas was determined 62-65% and 70-73% for SF1 and SF2, respectively. Moreover, the specific biogas production was found to be 0.35 ± 0.11 mL/kg·TS and 0.43 ± 0.13 mL/kg·VS for SF1 and 0.64 ± 0.15 mL/kg·TS and 0.81 ± 0.16 mL/kg·VS for SF2. In addition, the calculated energy production was 2.76 kWh for SF1 and 5.82 kWh for SF2, indicating about 2.1 fold higher energy production than that of SF1. Finally, the co-digestion performance index was 1.69 for SF2, so it was confirmed that the synergistic effect for biogas production was high when anaerobic co-digestion using FSCG as a co-feedstock.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Korean Society of Water Science and Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
