Modelling and optimization of VUV photolysis for ethylene control: For potential application in postharvest management

Ethical Reference Number: 2020FEREC-STD-026

This research investigated the application of Vacuum Ultraviolet Photolysis (VUV) for ethylene management during postharvest storage. A photolysis reactor was designed to degrade ethylene and was connected to a storage container holding apples to assess its efficiency in extending apple shelf life.

Firstly, kinetic studies were conducted to analyze the reaction kinetics, and the results showed that ethylene removal followed a fractional order.

Secondly, storage experiments were conducted at 15°C for 28 days. The results demonstrated that the VUV system successfully maintained low ethylene levels and preserved apple quality, thereby extending shelf life.

Lastly, a mathematical model was developed to simulate the temperature variation induced by the bulbs inside the reactor. The model successfully predicted the temperature trend and was also used to optimize the photolysis reactor.