Journal
BIORESOURCE TECHNOLOGY
Volume 182, Issue -, Pages 302-313Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.02.021
Keywords
Mesophilic anaerobic digestion; Fed-batch tests; Semi-continuous tests; Vegetable processing waste; Cost-benefit analysis
Funding
- European Community
- Regione Piemonte through POR-FESR project SAFEFOOD CONTROL
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Methane production capacity in mesophilic conditions of waste from two food industry plants was assessed in a semi-pilot (6 L, fed-batch) and pilot (300 L, semi-continuous) scale. This was carried out in order to evaluate the convenience of producing heat and electricity in a full scale anaerobic digester. The pilot test was performed in order to obtain more reliable results for the design of the digester. Methane yield, returned from the pilot scale test, was approximately 80% of that from the smaller scale test. This outcome was in line with those from other studies performed in different scales and modes and indicates the success of the pilot scale test. The net electricity produced from the digester accounted for 30-50% of the food industry plants' consumption. The available thermal energy could cover from 10% to 100% of the plant requirements, depending on the energy demand of the processes performed. (c) 2015 Elsevier Ltd. All rights reserved.
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