Contribution to Circular Economy options of mixed agricultural wastes management: Coupling anaerobic digestion with gasification for enhanced energy and material recovery

Autor: Cecilia Sambusiti, Anastasia Zabaniotou, Abdellatif Barakat, Elena Ficara, N. Antoniou, Florian Monlau
Přispěvatelé: Biomass Group, Dept. of Chemical Eng, Aristotle University of Thessaloniki, Plateau technique, APESA, Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Nouvelle Aquitaine Region (FEDER program), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Institut National de la Recherche Agronomique (INRA)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
traitement des déchets
Renewable energy
Strategy and Management
02 engineering and technology
7. Clean energy
Industrial and Manufacturing Engineering
[SDV.IDA]Life Sciences [q-bio]/Food engineering
0202 electrical engineering
electronic engineering
information engineering
écoprocédé
déchet agricole
Agricultural wastes
Anaerobic digestion
Circular economy
Gasification
Manure
Renewable Energy
Sustainability and the Environment
2300
Strategy and Management1409 Tourism
Leisure and Hospitality Management
General Environmental Science
2. Zero hunger
Waste management
Leisure and Hospitality Management
05 social sciences
bioéconomie
Producer gas
6. Clean water
Waste treatment
Digestate
Fertilizer
waste treatment
farm wastes
gazéification
020209 energy
Strategy and Management1409 Tourism
gasification
engineering.material
12. Responsible consumption
économie circulaire
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
0505 law
Sustainability and the Environment
business.industry
circular economy
13. Climate action
050501 criminology
engineering
Environmental science
business
Cow dung
Zdroj: Journal of Cleaner Production
Journal of Cleaner Production, Elsevier, 2019, 209, pp.505-514. ⟨10.1016/j.jclepro.2018.10.055⟩
ISSN: 0959-6526
DOI: 10.1016/j.jclepro.2018.10.055⟩
Popis: Anaerobic digestion (AD) is an established process for the treatment of organic wastes and the production of renewable energy. However, high amounts of digestate produced by AD plants require enhancement for further use. This study investigates a conceptual model for the digestate enhancement by using a downstream gasification. It is based on a ‘systemic approach’ considering the interactions of every contributing process into the dual system. The digestate was provided by an Italian AD plant, that treats mixed agricultural wastes of pig manure (43%), cow manure (20%), maize and triticale silages (25%), and cereal bran (12%). Digestate air gasification experiments were conducted, in a downdraft fixed-bed reactor, at temperature range from 750 °C to 850 °C, with λ varying from 0.14 to 0.34. Results have shown that gasification of digestate at 850 °C with λ = 0.24, increased producer gas yield (65.5 wt %), and its LHV (2.88 MJ Nm−3). The gas is classified as medium heating value fuel, suitable to generate electricity of 971 kWhel day−1 to enhance the AD plant's economic viability. A carbonaceous material rich in macronutrients (P, K, Ca, Mg) was produced, with R50 = 0.48, suitable for carbon sequestration. The study offers a resource closed loop approach of converting AD digestate into energy and soil fertilizer. Useful suggestions for policy makers and business can be drawn.
Databáze: OpenAIRE
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