Leachate flush strategies for managing volatile fatty acids accumulation in leach-bed reactors

Autor: E.D. van Hullebusch, Silvio Riggio, G Vives, Michel Torrijos, Giovanni Esposito, Jean-Philippe Steyer, Renaud Escudié
Přispěvatelé: Riggio, S, Torrijos, M, Vives, G, Esposito, G, van Hullebusch, E D, Steyer, J P, Escudié, R, Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio [Cassino], Laboratoire Géomatériaux et Environnement (LGE), Université Paris-Est Marne-la-Vallée (UPEM), Naskeo Environnement, Department of Environmental Engineering and Water Technology, UNESCO-IHE Institute for Water Education, ETeCoS3 Erasmus Mundus Joint Doctorate program (FPA n. 2010/0009), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
[SDV]Life Sciences [q-bio]
Volatile
Leach-bed reactor
Water Pollutant
02 engineering and technology
Biological Oxygen Demand Analysis
010501 environmental sciences
01 natural sciences
7. Clean energy
Methane
chemistry.chemical_compound
Bioreactors
VFA consumption
0202 electrical engineering
electronic engineering
information engineering
Water Pollutants
Leachate
Waste Management and Disposal
Fatty Acids
digestion anaérobie sèche
General Medicine
6. Clean water
Biofuel
Environmental chemistry
Metabolome
Dry anaerobic digestion
VFA extraction
volatile fatty acid
lixiviat
Leachate management
Biofuels
Fatty Acids
Volatile
Volatilization
Water Pollutants
Chemical
Environmental Engineering
020209 energy
Bioengineering
acide gras volatil
Chemical
digesteur anaérobie discontinu à percolation
Bioreactor
0105 earth and related environmental sciences
Volatilisation
Renewable Energy
Sustainability and the Environment
Extraction (chemistry)
Substrate (chemistry)
chemistry
Biological Oxygen Demand Analysi
Fatty Acid
Zdroj: Bioresource Technology
Bioresource Technology, Elsevier, 2017, 232, pp.93-102. ⟨10.1016/j.biortech.2017.01.060⟩
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2017.01.060⟩
Popis: In anaerobic leach-bed reactors (LBRs) co-digesting an easily- and a slowly-degradable substrate, the importance of the leachate flush both on extracting volatile fatty acids (VFAs) at the beginning of newly-started batches and on their consumption in mature reactors was tested. Regarding VFA extraction three leachate flush-rate conditions were studied: 0.5, 1 and 2 L kg−1 TS d−1. Results showed that increasing the leachate flush-rate during the acidification phase is essential to increase degradation kinetics. After this initial phase, leachate injection is less important and the flush-rate could be reduced. The injection in mature reactors of leachate with an acetic acid concentration of 5 or 10 g L−1 showed that for an optimized VFA consumption in LBRs, VFAs should be provided straight after the methane production peak in order to profit from a higher methanogenic activity, and every 6–7 h to maintain a high biogas production rate.
Databáze: OpenAIRE
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