Potential and limitations of ozone in marine recirculating aquaculture systems [Elektronische Ressource] : guidelines and thresholds for a safe application / vorgelegt von Jan Schröder

Potential and limitations of ozone in marine recirculating aquaculture systems - Guidelines and thresholds for a safe application - Dissertation zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel vorgelegt von Jan Schröder Kiel, November 2010 Referent/in: Dr. Reinhold Hanel Koreferent/in: Prof. Dr. Carsten Schulz Tag der mündlichen Prüfung: 28.01.2011 Zum Druck genehmigt: Kiel, Der Dekan SUMMARY The aim of the present thesis was to assess the potential and limitations of ozonation in marine recirculating aquaculture systems (RAS) while particularly focussing on the toxicity, formation and removal of ozone-produced oxidants (OPO) in order to develop guidelines and thresholds for a reasonable and safe ozone application. In the first two chapters the toxicity of OPO was investigated for two different marine aquaculture species and maximum safe levels were determined for both species. In Chapter I the acute and chronic toxicity of OPO to juvenile Pacific white shrimp (Litopenaeus vannamei) was investigated in 96-hour to 21-day exposure experiments by analysing mortality data and incidence of diseases.