Scale-up evaluation of the anaerobic digestion of food-processing industrial wastes

S. Fiore, B. Ruffino, G. Campo, C. Roati and M.C. Zanetti

Renewable Energy, 2016, vol. 96, issue PA, 949-959

Abstract: 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 model was proposed and the values of the disintegration kinetic constant (kdis) were calculated from the experimental data. The obtained model was employed as a control tool during tests afterward performed on pilot scale in a 300 L digester fed in a semi-continuous mode. Biogas yields between 0.5 and 0.9 Nm3/kgVS, and methane contents of 55–63% v/v were obtained on both scales. The model derived from the results of the proposed procedure appeared adequate for a consistent evaluation of the scale-up of the AD process.

Keywords: Biogas; Anaerobic digestion; Food; Waste; Model (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:96:y:2016:i:pa:p:949-959

DOI: 10.1016/j.renene.2016.05.049

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