Affordable Access

deepdyve-link
Publisher Website

Testing of novel net cleaning technologies for finfish aquaculture.

Authors
  • Bloecher, Nina1
  • Frank, Kevin1
  • Bondø, Morten1
  • Ribicic, Deni1
  • Endresen, Per Christian1
  • Su, Biao1
  • Floerl, Oliver1, 2
  • 1 SINTEF Ocean , Trondheim , Norway. , (Norway)
  • 2 Cawthron Institute , Nelson , New Zealand. , (New Zealand)
Type
Published Article
Journal
Biofouling
Publisher
Informa UK (Taylor & Francis)
Publication Date
Aug 01, 2019
Volume
35
Issue
7
Pages
805–817
Identifiers
DOI: 10.1080/08927014.2019.1663413
PMID: 31538816
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

To avoid the negative impacts caused by biofouling development, aquaculture nets around the world are periodically cleaned using high-pressure washers. Net cleaning is labour-intense and costly, can damage antifouling coatings on the nets, and pose contamination as well as fish health and welfare risks. To support the environmental sustainability of the growing aquaculture sector, novel net cleaning methods are needed. This study examined low-pressure-, cavitation-, and suction-based cleaning technologies as alternatives to conventional high-pressure cleaning. Using field experiments, cleaning efficacy, cleaning waste generation, and the impact of cleaning on coating integrity and net strength were evaluated. Cavitation and high-pressure cleaning achieved considerably higher cleaning efficacy than low-pressure and suction cleaning. However, a single high-pressure treatment caused up to 53% coating degradation, compared to 2% for cavitation. All technologies produced similar cleaning waste and neither reduced net strength significantly. This study identifies cavitation cleaning as promising technology for biofouling control on aquaculture nets.

Report this publication

Statistics

Seen <100 times