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Saponification pre-treatment and biosensors based control system for slaughterhouse waste anaerobic digestion improvement (ADAW)
Date du début: 1 mars 2013, Date de fin: 28 févr. 2015 PROJET  TERMINÉ 

Slaughterhouses (mainly for pigs, cattle and poultry which make up almost 93% of the total world meat production) produce large amounts of different wastes and wastewaters. Direct disposal of highly polluted wastewater and organic residues into the sewerage system without prior treatment on the other hand is mostly not acceptable due to resulting environmental and ecological problems and the risk of clogging in the wastewater piping systems. By banning land disposal slaughterhouse waste management, the European Regulation led to a drastic limitation of their management options, and an increase of total slaughtering industry costs. Incineration is recommended for high risk animal waste but the investment and maintenance cost makes them not suitable for the treatment of non-risk animal waste. Slaughterhouse waste is characterised by high content of lipids, which difficult other treatment strategies, like anaerobic digestion (AD). Current AD technologies for biogas production are still suffering from technical and economical obstacles, which are limiting its use as an energy source. Therefore, EU slaughterhouse holders need new solutions with improved cost-efficiency that permit them to treat the waste and accomplish with EU regulations (Directive 1774/2002) without compromising the margin of benefit.This proposal will look for an improvement of biogas technologies by development a post-treatment for the recovery of Nitrogen for fertilizing processes.-Improving biogas yields by advance control system for real time monitoring-Improving biogas yields by using a saponification pre-treatment. Research is being done to use a saponification pre-treatment but more research is needed to optimise the process. The aim of this project is to unify saponification and sterilisation and/or pasteurisation processes already required to treat slaughterhouse waste before Anaerobic Digestion.-Improving biogas yields by selecting specific bacteria population.



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