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Article

Measurement of Biochemical Methane Potential of Heterogeneous Solid Substrates: Results of a Two-Phase French Inter-Laboratory Study

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Institut Polytechnique UniLaSalle, EA7519 Transformations & AgroRessources, Rue Pierre Waguet, BP 30313, 60026 Beauvais CEDEX, France
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INRAE Transfert Environnement, 102 Avenue des Etangs, 11100 Narbonne, France
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TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France, 135 avenue de Rangueil, 31077 Toulouse CEDEX 04, France
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Ondalys, 4 rue Georges Besse, 34830 Clapiers, France
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INRAE, UR OPAALE, 17 avenue de Cucillé, CS 64427, 35044 Rennes, France
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INRAE, UR PROSE, Université Paris-Saclay, 92160 Antony, France
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VEOLIA Recherche et Innovation, Zone Portuaire, 291 Avenue Dreyfous Ducas, 78520 Limay, France
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Laboratoire Déchets Eaux Environnement et Pollutions (DEEP), INSA-Lyon, Université de Lyon, EA7429, 9, rue de la Physique, 69621 Villeurbanne CEDEX, France
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SUEZ, 38 Rue du Président Wilson, 78230 Le Pecq, France
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Université de Technologie de Compiègne, Alliance Sorbonne Universités, TIMR EA 4297 UTC/ESCOM, Centre de Recherches de Royallieu, CS60 319, 60203 Compiègne CEDEX, France
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APESA, Hélioparc, 2 av. Pierre Angot, 64053 Pau, France
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LBE, INRAE, Univ Montpellier, 102 Avenue des étangs, 11100 Narbonne, France
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Author to whom correspondence should be addressed.
Water 2020, 12(10), 2814; https://doi.org/10.3390/w12102814
Received: 27 July 2020 / Revised: 30 September 2020 / Accepted: 2 October 2020 / Published: 10 October 2020
Biochemical methane potential (BMP) is essential to determine the production of methane for various substrates; literature shows important discrepancies for the same substrates. In this paper, a harmonized BMP protocol was developed and tested with two phases of BMP tests carried out by eleven French laboratories. Surprisingly, for the three same solid tested substrates (straw; raw mix and dried-shredded mix of potatoes, maize, beef meat and straw; and mayonnaise), the standard deviations of the repeatability and reproducibility inter-laboratory were not enhanced by the harmonized protocol (average of about 25% depending on the substrate), as compared to a previous step where all laboratories used their own protocols. Moreover, statistical analyses of all the results, after removal of the outliers (about 15% of all observations), did not highlight significant effect of the operational effect on BMP (stirring, automatic or manual gas quantification, use of trace metal, uses a bicarbonate buffer, inoculum to substrate ratio) at least for the tested ranges. On the other hand, the average intra-laboratory repeatability was low, about 7%, whatever the protocol, the substrate and the laboratory. It also appears that drying the SA substrate, which contained proteins, carbohydrates, lipids and fibers, does not impact its BMP. View Full-Text
Keywords: BMP; methanogenic potential; inter-laboratory study; solid substrates BMP; methanogenic potential; inter-laboratory study; solid substrates
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MDPI and ACS Style

Ribeiro, T.; Cresson, R.; Pommier, S.; Preys, S.; André, L.; Béline, F.; Bouchez, T.; Bougrier, C.; Buffière, P.; Cacho, J.; Camacho, P.; Mazéas, L.; Pauss, A.; Pouech, P.; Rouez, M.; Torrijos, M. Measurement of Biochemical Methane Potential of Heterogeneous Solid Substrates: Results of a Two-Phase French Inter-Laboratory Study. Water 2020, 12, 2814. https://doi.org/10.3390/w12102814

AMA Style

Ribeiro T, Cresson R, Pommier S, Preys S, André L, Béline F, Bouchez T, Bougrier C, Buffière P, Cacho J, Camacho P, Mazéas L, Pauss A, Pouech P, Rouez M, Torrijos M. Measurement of Biochemical Methane Potential of Heterogeneous Solid Substrates: Results of a Two-Phase French Inter-Laboratory Study. Water. 2020; 12(10):2814. https://doi.org/10.3390/w12102814

Chicago/Turabian Style

Ribeiro, Thierry; Cresson, Romain; Pommier, Sébastien; Preys, Sébastien; André, Laura; Béline, Fabrice; Bouchez, Théodore; Bougrier, Claire; Buffière, Pierre; Cacho, Jesús; Camacho, Patricia; Mazéas, Laurent; Pauss, André; Pouech, Philippe; Rouez, Maxime; Torrijos, Michel. 2020. "Measurement of Biochemical Methane Potential of Heterogeneous Solid Substrates: Results of a Two-Phase French Inter-Laboratory Study" Water 12, no. 10: 2814. https://doi.org/10.3390/w12102814

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