Sustainable biogas production via anaerobic co-digestion of cheese whey and cattle manure
DOI:
https://doi.org/10.18633/biotecnia.v26.2063Keywords:
biochemical methane potential, substrates, Biogas, anaerobic digestion, methane yieldAbstract
In Mexico, specifically in Chiapas, the dairy cattle industry plays a significant role in cheese and milk production. However, the large quantities of cattle manure (CM) and cheese whey (CW) generated as byproducts pose environmental challenges if not managed properly. To address this issue, anaerobic digestion (AD) technology offers a sustainable solution by treating organic waste and producing biogas. This research study focuses on assessing the potential of CW and CM, both individually and in co-digestion, in an anaerobic environment. The study also evaluates biogas yield and composition using an up-flow anaerobic sludge blanket (UASB) reactor with different CW and CM mixtures. The findings indicate that the 30CM:70CW ratio exhibited the highest methane yield, surpassing other assays in co-digestion and mono-digestion. Furthermore, the UASB reactor showed that a mixture of 90CW:10CM produced 25.73 L of biogas per gram of volatile solids daily, comprising 60 % methane and 40 % carbon dioxide. This research demonstrates the potential for efficient and environmentally friendly treatment of CM and CW through optimized co-digestion and UASB technology, highlighting the opportunity to generate biogas while reducing waste.
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