Abstract
Changes in daily habits and a stressful lifestyle create modifications in consumer preferences and open opportunities to new market products. This is the case of fourth-range products in which the industrial sector generates a waste stream of high quality. Valorization of this type of waste as a single stream is desirable to avoid lowering quality with other low-grade materials. Anaerobic digestion of fourth-range wastes was studied under discontinuous and semi-continuous conditions. A high carbon content characterizes the organic material composed of fruit and vegetable wastes. The fast degradation of the substrate indicated no limitations associated with the hydrolysis stage, as observed from kinetic parameters estimated from batch assays. However, the easiness of degradation did not translate into short hydraulic retention times when operating under semi-continuous conditions. Additionally, the insufficient amount of nutrients prevented the development of a well-balanced digestion process. Specific methane production was 325 mL CH4/g VS added at a hydraulic retention time of 30 days. However, solid accumulation was observed at the end of the experiment, indicating that conditions established did not allow for the complete conversion of the organic material. Digestate evaluation using thermal analysis under inert conditions showed a thermal profile evidencing the presence of complex components and a high tendency to char formation.
Subject
Plant Science,Biochemistry, Genetics and Molecular Biology (miscellaneous),Food Science
Reference47 articles.
1. Behavioral Strategies to Increase Fruit and Vegetable Intake by Fourth-through Sixth-Grade Students;Sandeno;J. Am. Diet Assoc.,2000
2. The Impact of a School-Based Nutrition Education Intervention on Dietary Intake and Cognitive and Attitudinal Variables Relating to Fruits and Vegetables;Anderson;Public Health Nutr.,2005
3. Concise Review on Ethanol Production from Food Waste: Development and Sustainability;Ma;Environ. Sci. Pollut. Res.,2018
4. Prasoulas, G., Gentikis, A., Konti, A., Kalantzi, S., Kekos, D., and Mamma, D. (2020). Bioethanol Production from Food Waste Applying the Multienzyme System Produced On-Site by Fusarium Oxysporum F3 and Mixed Microbial Cultures. Fermentation, 6.
5. Butanol Fermentation;Montoya;Environ. Technol.,2013
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