The impact of artificial monolayers on water quality: data from tank and field trials

Pittaway, P. and Martinez-Alvarez, V. and Gallego-Elvira, B. and Hancock, N. (2012) The impact of artificial monolayers on water quality: data from tank and field trials. In: 4th Urban Water Security Reseach Alliance Science Forum and Stakeholder Engagement, 19-20 Jun 2012, Brisbane, Australia.

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Abstract

In conjunction with the Logan's Storage water quality monitoring program, a tank trial was conducted using suspended physical covers to control wind speed and light intensity. The monolayer octadecanol was applied twice weekly to one tank, continuously for 4 months. An unspecified monolayer was applied at Logan's on selected days with wind less than 12m sec and no rain. Contrary to expectations, the monolayer did not increase water temperature. A condensed monolayer insulates the air-water interface, buffering water temperature from heat gain and heat loss. Phytoplankton populations in the tanks were more sensitive to changes in light intensity, water stratification, and toxins off-gassing from a new high density polyethylene liner, than the continuous application of the octadecanol monolayer. These results highlight that even under the extreme case of continuous application over four months, there was no conclusive evidence of the octadecanol monolayer adversely affecting water quality.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2012 CSIRO. Accepted version deposited in accordance with the copyright policy of the publisher. To the extent permitted by law, all rights are reserved and no part of this publication covered by copyright may be reproduced or copied in any form or by any means except with the written permission of CSIRO.
Depositing User: epEditor USQ
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 16 Oct 2012 07:02
Last Modified: 17 Oct 2013 05:39
Uncontrolled Keywords: monolayer; air/water interface; microlayer; suspended covers; enrichment; water quality
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
03 Chemical Sciences > 0399 Other Chemical Sciences > 039901 Environmental Chemistry (incl. Atmospheric Chemistry)
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961103 Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use)
URI: http://eprints.usq.edu.au/id/eprint/22143

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