Khat Waste and Cow Dung for Better Biogas Production
Author Information
Author(s): Legesse Henok Akililu, Debele Wagene Hailu, Wachemo Akiber Chufo
Primary Institution: Arba Minch Water Technology Institute
Hypothesis
The study aims to examine the bio-methane production potential and substrate conversion rate of khat waste and cow dung through anaerobic co-digestion.
Conclusion
The co-digestion of khat waste and cow dung significantly enhances biomethane production compared to using cow dung alone.
Supporting Evidence
- The maximum biomethane yield was 283.52 ± 7.17 CH4 mL/g VS from the 2:1 ratio of khat waste to cow dung.
- The study demonstrated that higher proportions of khat waste improve degradation rates.
- Co-digestion provided better nutrient balance and buffering capacity, leading to higher methane output.
Takeaway
Mixing khat waste with cow dung helps make more gas that can be used for energy. It's like making a better smoothie by mixing different fruits!
Methodology
The study used seven triplicate proportions of laboratory scale batch anaerobic reactors for a 27-day digestion period under mesophilic conditions.
Limitations
The study may not account for variations in biogas production under different environmental conditions.
Digital Object Identifier (DOI)
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