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Process engineering facility
The Process Engineering facility

hosts all of UniLaSalle’s agro-industrial and/or food technologies. The technologies studied include microwave radiation in drying, cooking and extraction of certain molecules, and ozonation as part of research and development programs covering the environment (remediation), green chemistry, nutrition and health (agro-resource product sanitization). Our versatile equipment enables almost any material to be processed (liquids, fine and coarse solids) making the technologies available easier to implement and scale for industry.

A dedicated physical and chemical test laboratory

has been set up within the facility. Mainly occupied by fourth-year students on the food specialization (Agriculture and Health & Food degree), it is used to physically characterize products made in the facility or during practical work sessions (texture, color, viscosity).

Our facility also houses unit operation systems for the vocational practical work of students on the food industry specialization (fourth-year of an Agricultural degree).

Research areas
  • Study of oxidation reactions,
  • Theme-based studies in disinfection, sterilization, pasteurization and environmental remediation,
  • Kinetic cooking studies,
  • Kinetic drying studies.
Key technical equipment

Microwave radiation

  • Semi-industrial liquid phase microwave system [microwave equipment used to treat pumpable products, with 6 x 1.2 kW generators, 5 with set power and 1 with variable power controlled by the product output temperature. The feed rate can reach up to 150 L/h depending on the type of product. This system is used to perform pasteurization and sterilization operations on runny liquids or viscous sauces with or without particles].
  • Modular variable-power laboratory microwave system [fully instrumented equipment used to establish drying kinetics during microwave drying (in situ mass monitoring)]. Two treatment cavities are available — one stereomode cavity for heating and one monomode cavity for drying.
    • Adjustable parameters: specific power to be applied (max. power 2000 W); air temperature (30 to 120°C); air speed (0 to 10 m/s); sample size: 100 to 500 g (according to product density),
    • Measurable parameters: microwave power; real applied power; reflected microwave power; product mass; product temperature (fiber-optic + IR pyrometer).
    • Vötsch Industritechnik environmental chamber, with controlled hygrometry of 20% to 90% RH and 10 to 50°C for product aging studies.

Ozone generation

  • Several ozone generators are housed in the facility: OZONIA discharge ozone generator (1 kg/h O3 production), OZONIA discharge ozone generator (100 g/h O3 production), discharge ozone generator (10 g/h O3 production). Ozone can be generated from atmospheric oxygen and/or liquid oxygen.

Ozone generation systems

  • Several ozone generation systems are housed in the feasibility facility: 20 L ozone generation system for viscous liquids, 1.5 m3 ozone generation system for clear liquids, 1 m3 ozone generation system for turbid liquids, 50 kg ozone generation system for fine solids, and an 80 kg ozone generation system for coarse solids.

Dedicated physical measurement laboratory

  • STABLE MICRO SYSTEMS TAXT plus texture analyzer,
  • GBX Fast/1 fast water activity meter,
  • MINOLTA CR300 colorimeter,
  • METTLER TOLEDO MJ33 moisture analyzer,
  • BROOKFIELD RVDV-II+ viscometer,
  • NEWPORT Scientific RVA-4 Rapid Visco Analyzer,
  • TELEPH – M TC meter.
Institutional partners

ADEME, AgroParisTech, Regional Council of Picardy, FEDER, INRA, UTC, University of Brighton

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