Sustainable Agro-Food Industrial Wastewater Treatment Using High Rate Anaerobic Process

This review article compiles the various advances made since 2008 in sustainable high-rate anaerobic technologies with emphasis on their performance enhancement when treating agro-food industrial wastewater. The review explores the generation and characteristics of different agro-food industrial wastewaters; the need for and the performance of high rate anaerobic reactors, such as an upflow anaerobic fixed bed reactor, an upflow anaerobic sludge blanket (UASB) reactor, hybrid systems etc.; operational challenges, mass transfer considerations, energy production estimation, toxicity, modeling, technology assessment and recommendations for successful operation

Sustainable Agro-Food Industrial Wastewater Treatment Using High Rate Anaerobic Process

This review article compiles the various advances made since 2008 in sustainable high-rate anaerobic technologies with emphasis on their performance enhancement when treating agro-food industrial wastewater. The review explores the generation and characteristics of different agro-food industrial wastewaters; the need for and the performance of high rate anaerobic reactors, such as an upflow anaerobic fixed bed reactor, an upflow anaerobic sludge blanket (UASB) reactor, hybrid systems etc.; operational challenges, mass transfer considerations, energy production estimation, toxicity, modeling, technology assessment and recommendations for successful operation

Sustainable Agro-Food Industrial Wastewater Treatment Using High Rate Anaerobic Process

This review article compiles the various advances made since 2008 in sustainable high-rate anaerobic technologies with emphasis on their performance enhancement when treating agro-food industrial wastewater. The review explores the generation and characteristics of different agro-food industrial wastewaters; the need for and the performance of high rate anaerobic reactors, such as an upflow anaerobic fixed bed reactor, an upflow anaerobic sludge blanket (UASB) reactor, hybrid systems etc.; operational challenges, mass transfer considerations, energy production estimation, toxicity, modeling, technology assessment and recommendations for successful operation

Towards a standardization of biomethane potential tests

Production of biogas from different organic materials is a most interesting source of renewable energy. The biomethane potential (BMP) of these materials has to be determined to get insight in design parameters for anaerobic digesters. Although several norms and guidelines for BMP tests exist, inter-laboratory tests regularly show high variability of BMPs for the same substrate. A workshop was held in June 2015, in Leysin, Switzerland, with over 40 attendees from 30 laboratories around the world, to agree on common solutions to the conundrum of inconsistent BMP test results. This paper presents the consensus of the intense roundtable discussions and cross-comparison of methodologies used in respective laboratories. Compulsory elements for the validation of BMP results were defined. They include the minimal number of replicates, the request to carry out blank and positive control assays, a criterion for the test duration, details on BMP calculation, and last but not least criteria for rejection of the BMP tests. Finally, recommendations on items that strongly influence the outcome of BMP tests such as inoculum characteristics, substrate preparation, test setup, and data analysis are presented to increase the probability of obtaining validated and reproducible results.info:eu-repo/semantics/publishedVersio

State of Development of Biogas Production in Europe

International audienceThe share of renewable energies in electricity production is still low in Europe but there is a political will to increase it in the future by the development of solar and wind energies but also by the development of electricity production from biogas. Biogas production from solid waste is developing in Europe but with important differences between countries. Germany is from far the country where biogas industry is the most developed with 62% of the European biogas plants. However, the latest support schemes implemented in Germany (2012 and 2014) have strongly slowed down the German biogas market. Italy is number two for the number of anaerobic plants. Biogas industry developed very rapidly till 2013 when Italy had the highest feed-in tariff in Europe. However Italy has revised its support scheme to redirect the biogas market towards small size plants based on animal and agricultural waste. The development of biogas in France started significantly at the end of the years 2000 with the implementation of the first support scheme. However, the biogas market is developing rather slowly due to the rather low feed-in tariffs implemented in France. The example of Germany shows clearly that biogas market dynamism is directly linked to the support schemes and the feed-in tariffs implemented. Indeed, biogas industry in Europe was performing rather well since recently, but negative changes or cuts in the support schemes in some countries during the last two years, particularly in Germany and Italy, have slowed down a lot the biogas market, phenomenon which should last in the coming years though some countries like UK or France are maintaining their policies in favor of biogas.However, several factors could favor the development of the biogas market: The acceptance of digestate as a fertilizer, the possible ban of land-filling and the limitation of incineration of organic waste

Tratamiento de aguas residuales vinicolas en planta industrial de tipo SBR

*INRA Laboratoire de Biotechnologie de l'Environnement de Narbonne Diffusion du document : INRA Laboratoire de Biotechnologie de l'Environnement de NarbonneInternational audienc

Improvement of sludge settleability in an aerobic SBR treating wastewater with high COD

International audienc

Characterisation of the liquid fraction of digestate after solid-liquid separation

communication orale et posterInternational audienceSamples of the liquid fraction of digestate from 6 mesophilic anaerobic co-digestion plants after solid-liquid separation were characterised. The samples represented different types of substrates, different AD process parameters and types of solid-liquid separation devices. Fractionation of the liquid fraction of digestate was performed according to different size in coarse filtration (100 μm, 41 μm, 10 μm) followed by microfiltration (1.2 μm, 0.45 μm, 0.2 μm) and ultrafiltration (100 kDa, 10 KDa and 1 KDa). The fractions were then grouped as suspended particles (> 1.2 μm), coarse colloids (1.2-0.45 μm), fine colloids (0.45μm-1 kDa) and dissolved matter (< 1kDa). The results highlighted that COD was high in liquid fraction of digestates (9-78 g/L) with most of the COD as suspended particles (67.5% to 94.1%) and only 3.2% to 21.5% as dissolved matter. The characterisation of 5 more AD digestates are ongoing and statistical analysis will be performed to assess the correlation between the digestate characterisation and the types of substrates used, process parameters and type of solid-liquid separation used

Nonlinear kinetic modelling of anaerobic biodegradation of fruit, vegetable waste along with oil

PosterInternational audienceExperiments were conducted with vegetables (Potato, Carrot, Spinach), fruits (Grapes, Orange) and cooked oil collected from restaurants, in 6 litre laboratory reactors operated in batch mode with organic loading rate ranging from 1.0 – 6.0 g·[VS]/l. The kinetics of biogas production under the co-digestion was studied using first order exponential, Fitzhugh and Cone model. The goodness of models fit to the observed data was first checked by calculating the Pearson product-moment correlation coefficient. A matrix of p-values for testing the hypothesis of no correlation was also determined. Results showed that all models perform well comparatively with the observed data. Estimated degradation rate constants were similar for the vegetables and fruits co-digestion but different in the case of the co-digestion with oil

High cod wastewater treatment in an aerobic SBR: treatment of effluent from a small farm goat's cheese dairy

6 ref. chap. 9International audienc