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Published in: Clean Technologies and Environmental Policy 2/2023

22-10-2021 | Original Paper

Effect of pre-treatment on mesophilic anaerobic co-digestion of fruit, food and vegetable waste

Authors: Amit Kumar Chaurasia, Puneet Siwach, Ravi Shankar, Prasenjit Mondal

Published in: Clean Technologies and Environmental Policy | Issue 2/2023

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Abstract

Pre-treatment of fruit, food and vegetable waste materials could enhance the biogas generation and waste stabilization in a shorter time. Effect of alkaline, hydrothermal, thermal and ultrasonication pre-treatment of fruit, food and vegetable waste (FFVW) on the anaerobic co-digestion (ACD) was assessed in terms of total solid (TS), volatile solid (VS) reduction and biogas/methane production. The mesophilic anaerobic co-digestion of pre-treated FFVW with cow dung was performed in a laboratory scale 1L batch digester for 30 days at 40 ± 2 °C temperature. Performance of ultrasonication process is found more economical and efficient pre-treatment over other pre-treatment processes such as thermal, alkaline and hydrothermal processes. Obtained results show that ultrasonication pre-treatment process enhances the biogas and biomethane production by 29.4% and 18.4%, respectively. During ultrasonication pre-treatment, 16.89% TS and 19.44% VS removal are noted. While 106.81 ml biogas/gVS and 29.92 ml CH4/gVS are generated during ACD of ultrasonicated FFVW. In addition, considerable enhancement in biogas production was noted with alkaline pre-treatment but it is least economical. Economic analysis shows that the cost for the production of biogas through anaerobic co-digestion from untreated, ultrasonication, alkaline, hydrothermal and thermal pre-treated FFVW are 2.45, 3.12, 19.33, 5.52 and 22.72 USDs/ton FFVW, respectively. Energy study also indicates the lesser energy consumption and higher biogas production in case of ultrasonication pre-treatment.

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Appendix
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Metadata
Title
Effect of pre-treatment on mesophilic anaerobic co-digestion of fruit, food and vegetable waste
Authors
Amit Kumar Chaurasia
Puneet Siwach
Ravi Shankar
Prasenjit Mondal
Publication date
22-10-2021
Publisher
Springer Berlin Heidelberg
Published in
Clean Technologies and Environmental Policy / Issue 2/2023
Print ISSN: 1618-954X
Electronic ISSN: 1618-9558
DOI
https://doi.org/10.1007/s10098-021-02218-5

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