Using Domestic Sewage for Better Biogas Production
Author Information
Author(s): Induchoodan TG, Nimitha Choran, Ajay S Kalamdhad
Primary Institution: Indian Institute of Technology Guwahati
Hypothesis
Can domestic sewage be used as a sustainable alternative to freshwater for anaerobic digestion of lignocellulosic biomass?
Conclusion
The study shows that using sewage instead of freshwater significantly enhances methane production in anaerobic digestion.
Supporting Evidence
- Methane production increased by nearly 50% when using sewage compared to freshwater.
- Sewage media resulted in significant lignin degradation, enhancing biogas production.
- The study demonstrated that sewage can replace costly pretreatment techniques for lignocellulosic biomass.
Takeaway
This study found that using sewage instead of freshwater can help make more biogas from plants like water hyacinth and hydrilla, which is good for the environment.
Methodology
The study conducted biochemical methane potential tests using water hyacinth, pretreated water hyacinth, and hydrilla verticillata as substrates in sewage media.
Limitations
Sewage has low organic content, which may limit methane production, and additional inoculum sources are required for effective digestion.
Digital Object Identifier (DOI)
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