Saponification pre-treatment and biosensors based control system for slaughterhouse waste anaerobic digestion improvement

Slaughterhouses produce large amounts of different wastes and wastewaters which must be adequately managed and treated. Direct disposal of highly polluted wastewater and organic residues generated into the sewerage system without prior treatment is not acceptable practice 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. Therefore, EU slaughterhouse holders need new solutions with improved cost-efficiency that permit them to manage and treat their wastes and accomplish with EU regulations (Directives 1069/2009 and 142/2011) without compromising the margin of benefit.

Slaughterhouse wastes are characterised by high content of proteins and lipids, which difficult the management and treatment strategies. Current anaerobic digestion technologies for biogas production are still suffering from technical and economical obstacles, which are limiting the use of certain organic waste as an energy source.

ADAW aims at developing a technology which allows the adequate management and valorization of certain kinds of organic wastes with high content of proteins and lipids by anaerobic digestion processes. Specifically, ADAW Solution will enable to manage and treat slaughterhouse wastes by anaerobic digestion processes through the development of ultrasonic sonication and saponification pre-treatments and the implementation of advanced measuring and control system.

ADAW consortium is formed by five Small and Medium Enterprises (Spain: Biogas Fuel Cell, S.A. (Coordinator) and Tecnocárnico Valle del Ebro, S.A.; UK: Electrochemical Sensor Technology (EST) Ltd.; Greece: S.BI. AUTOMATIONS; France: Sinaptec) and three research organizations (Spain: Institut de Recerca I Tecnologia Agroalimentaries and Tecnologías Avanzadas Inspiralia, S.L.; France: Institut National de la Recherche Agronomique).

Inspiralia’s Advanced Materials department will develop two sensors to monitor the quality of the anaerobic digestion process. Moreover, the Computational and Engineering Group will study the best configuration for implement the ultrasound to favour particle solubilisation and microorganism reactivation during the process using ANSYS Multiphysics program. Finally, Inspiralia’s Industrial Control Group will design and implement the process automation system which integrates sensors, actuators, ultrasound and logic control software of the whole system.

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