Research project Sustainable solution for removal of geosimin and 2-MIB using Advanced Oxidation

General introduction

In recirculating aquaculture systems (RAS), undesirable substances such as geosmin and 2-methylisoborneol (2-MIB) are produced by certain microorganisms. This causes an off-flavour in the culitvated fish and derived products such as caviar. The off-flavour can be removed by purifying the fish and letting them swim in separate tanks without feeding, but this is a long process. The Kavixton project aims to optimise the purification process through a faster break down of both substances by using advanced oxidation processes.

Research approach

Specifically, the project focuses on the efficient removal of geosmin and 2-methylisoborneol from the purification swimming water in sturgeon farming. Three demo experiments on different scales will be carried out, in which the eAOP technology of the company Exciton will be used to investigate how advanced oxidation can accelerate the excretion process. In this process, highly reactive hydroxyl-radicals can already be formed at the prevailing ambient pressure and temperature. In this research, ILVO is responsible for the efficient determination of geosmin and 2-methylisoborneol in both fish fillet and fish eggs.

Relevance/Valorization

Off-flavour is considered one of the biggest problems in recirculation aquaculture systems. By using advanced oxidation, the production costs may be significantly reduced and the quality of the end product can be considerably improved. This should lead to an effective implementation of the tested technology by aquaculture companies. The analytical method developed at ILVO for determining geosmin and 2-methylisoborneol in fish guarantees an accurate process control.

Financing

EFMZVA
FIVA