Influence of Biomass Agitation on Biogas and Methane Production

Agitation of biomass increases prodcution of biogas and methane in batch reactors.
(De Gruyter) – Production of biogas and methane from biomass is a way to achieve green fuels and products from traditional organic agricultural waste. The methods for acquring through careful research result in an increasing efficiency of the process. The authors tested the effect of agitation, via barrel rotation, on the anaerobic digestion of the 1st stage of the wet process operated in an agricultural mesophilic biogas plant.
Comparing the process of biogas and methane generation with and without batch agitation indicated that a conversion to biogas was significantly better with agitation. The processes was conducted discontinuously without any addition of feed for 21 days. The highest biogas production was achieved consistently on the 7th day.
Agitated batches produced 32.5% extra biogas and 28.5% higher methane yield.
The experiment confirmed the possibility of increasing the anaerobic biogas and methane production by slow continuous rotation. The authors noted that these results would have to be complemented by pilot scale analysis of energy consumption to ensure the value of the agitation process versus the cost of rotating the biomass.

Edited for Content and Length by Dr. Matthew A. Hood.

The original full article can be found at De Gruyter in the journal Green Proccessing and Synthesis.

DOI: 10.1515/gps-2016-0181

Green Processing and Synthesis 2017, 6, 273–279.

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