title: Electrical resistivity tomography to quantify in situ liquid content in a full-scale dry anaerobic digestion reactor.
abstract: The electrical resistivity tomography (ERT) method is a non-intrusive method widely used in landfills to detect and locate liquid content. An experimental set-up was performed on a dry batch anaerobic digestion reactor to investigate liquid repartition in process and to map spatial distribution of inoculum. Two array electrodes were used: pole-dipole and gradient arrays. A technical adaptation of ERT method was necessary. Measured resistivity data were inverted and modeled by RES2DINV software to get resistivity sections. Continuous calibration along resistivity section was necessary to understand data involving sampling and physicochemical analysis. Samples were analyzed performing both biochemical methane potential and fiber quantification. Correlations were established between the protocol of reactor preparation, resistivity values, liquid content, methane potential and fiber content representing liquid repartition, high methane potential zones and degradations zones. ERT method showed a strong relevance to monitor and to optimize the dry batch anaerobic digestion process.
authors.affiliation: Sorbonne Universités, EA 4297 TIMR UTC/ESCOM, UTC, CS 60319, 60203 Compiègne Cedex, France; Institut Polytechnique LaSalle Beauvais, Département des Sciences et Techniques Agro-Industrielles, rue Pierre Waguet, BP 30313, 60026 Beauvais Cedex, France.
authors.forename: L
authors.initials: L
authors.lastname: André
authors.affiliation: Sorbonne Universités, EA 4297 TIMR UTC/ESCOM, UTC, CS 60319, 60203 Compiègne Cedex, France.
authors.forename: E
authors.initials: E
authors.lastname: Lamy
authors.affiliation: Institut Polytechnique LaSalle Beauvais, Département de Géosciences, HydrISE, rue Pierre Waguet, BP 30313, 60026 Beauvais Cedex, France.
authors.forename: P
authors.initials: P
authors.lastname: Lutz
authors.affiliation: Institut Polytechnique LaSalle Beauvais, Département des Sciences et Techniques Agro-Industrielles, rue Pierre Waguet, BP 30313, 60026 Beauvais Cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Pernier
authors.affiliation: ERigène, 19 rue Pierre Waguet, 60000 Beauvais, France.
authors.forename: O
authors.initials: O
authors.lastname: Lespinard
authors.affiliation: Sorbonne Universités, EA 4297 TIMR UTC/ESCOM, UTC, CS 60319, 60203 Compiègne Cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Pauss
authors.affiliation: Institut Polytechnique LaSalle Beauvais, Département des Sciences et Techniques Agro-Industrielles, rue Pierre Waguet, BP 30313, 60026 Beauvais Cedex, France. Electronic address: thierry.ribeiro@lasalle-beauvais.fr.
authors.forename: T
authors.initials: T
authors.lastname: Ribeiro
mesh_terms: D003198:Computer Simulation; D017097:Electric Impedance; D004566:Electrodes; D008697:Methane / Q000096:biosynthesis*; D012984:Software; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater
chemical_list: D008697:Methane; D062065:Wastewater
keywords: Agricultural waste; Dry batch anaerobic digestion; Electrical resistivity tomography; Liquid content; Methanization activity