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On board short-time high temperature heat treatment of ballast water: A field trial under operational conditions

Lookup NU author(s): Gemma Quilez-Badia, Antony Vourdachas, Dr Margaret Gill, Professor Ehsan Mesbahi, Professor Christopher Frid

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Abstract

A ballast water short-time high temperature heat treatment technique was applied on board a car-carrier during a voyage from Egypt to Belgium. Ballast water from three tanks was subjected for a few seconds to temperatures ranging from 55 °C to 80 °C. The water was heated using the vessel's heat exchanger steam and a second heat exchanger was used to pre-heat and cool down the water. The treatment was effective at causing mortality of bacteria, phytoplankton and zooplankton. The International Maritime Organization (IMO) standard was not agreed before this study was carried out, but comparing our results gives a broad indication that the IMO standard would have been met in some of the tests for the zooplankton, in all the tests for the phytoplankton; and probably on most occasions for the bacteria. Passing the water through the pump increased the kill rate but increasing the temperature above 55 °C did not improve the heat treatment's efficacy. © 2007 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Quilez-Badia G, McCollin T, Josefsen KD, Vourdachas A, Gill ME, Mesbahi E, Frid CLJ

Publication type: Article

Publication status: Published

Journal: Marine Pollution Bulletin

Year: 2008

Volume: 56

Issue: 1

Pages: 127-135

ISSN (print): 0025-326X

ISSN (electronic): 1879-3363

Publisher: Elsevier Ltd.

URL: http://dx.doi.org/10.1016/j.marpolbul.2007.09.036

DOI: 10.1016/j.marpolbul.2007.09.036

PubMed id: 18036619

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