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This work proposes a semi-pilot scale procedure for the evaluation of biogas production potential and the employment of its results for the scale-up of the process. AD tests were performed at 35 °C in 6 L reactors, feeding 3–6% w/w TS in a fed-batch mode. Several substrates, generated by food-processing industries, were considered in the study. Assuming solubilization as the limiting step, a theoretical...
The proposed model of solid-state digestion assumes the development of a distinct zone of depleted waste around each viable seed particle. Biodegradation is envisaged to occur chiefly in thin shells at the interface between depleted and raw waste, at a rate proportional to the interfacial area. These shells are estimated to expand at a constant 5 cm/year. The reaction thus accelerates following a...
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