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Effects of coffee processing residues on anaerobic microorganisms and corresponding digestion performance
Juan Pablo Rojas-Sossa1, Mariana Murillo-Roos2, Lidieth Uribe3
1Agricultural Engineering, University of Costa Rica, San José, Costa Rica; Anaerobic Digestion Research and Education Center, Biosystems and Agricultural Engineering, Michigan State University, MI, USA.
Abstract:
The objective of this study was to delineate the effects of different coffee processing residues on the anaerobic microbes and corresponding digestion performance. The results elucidated that mucilage-rich feed enhanced the accumulation of methanogens, which consequently led to better digestion performance of biogas production. Fifty percent more methane and up to 3 times more net energy (heat and electricity) output were achieved by the digestion of the mucilage-rich feed (M3). The microbial community and statistical analyses further elucidated that different residues in the feed had significant impact on microbial distribution and correspondingly influenced the digestion performance.
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