Original scientific paper
https://doi.org/10.13044/j.sdewes.d8.0320
Enhancing Bioenergy Recovery from Agro-food Biowastes as a Strategy to Promote Circular Bioeconomy
Elizabeth Duarte
; Linking Landscape, Environment, Agriculture and Food, Higher Institute of Agronomy, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
Rita Fragoso
; Linking Landscape, Environment, Agriculture and Food, Higher Institute of Agronomy, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
Nicole Smozinski
; Linking Landscape, Environment, Agriculture and Food, Higher Institute of Agronomy, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
Jorge Tavares
; Linking Landscape, Environment, Agriculture and Food, School of Agriculture, Polytechnic Institute of Beja, R. 1º de Maio, 7800-000 Beja, Portugal
Abstract
Agro-food industries produce large amounts of wastes challenging innovative and efficient valorisation strategies promoting the circular bioeconomy concept. Anaerobic digestion technology is an interesting route for bioenergy recovery in the agro-food chain sector. In this work, a simple approach is proposed for assessing energy performance of
livestock manure and mixed sewage sludge, as substrate by coupling the potential addition of several agro-food biowastes (co-substrate: fruit and vegetable biowastes, fish canning industry, other manures, coffee wastes, and non-edible crops). The results obtained showed an increase of energy performance indicator ranging from 30 to 250%
and 62 to 539%, for livestock manure and mixed sewage sludge, respectively. This conceptual approach for feedstocks promotes the circular bioeconomy as it encourages the stakeholders to a smart use of anaerobic biotechnology at rural-level or urban-level.
Keywords
Anaerobic digestion; Co-digestion; Pre-treatments; Biogas production rate; Specific methane yield; Waste-to-bioenergy; Biowastes management strategy; Sustainable development.
Hrčak ID:
246298
URI
Publication date:
31.3.2021.
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