Journal article
Evaluation of a bacterial algal control agent in tank-based experiments
Water Research, Vol.46(7), pp.2435-2444
2012
Abstract
A bacterial-based bioremediation product, LakeRelief™ by Novozymes (Waterguru LakeRelief, 2011), was tested in a series of experiments between October 2008 and March 2009 to evaluate its suitability as a short-term intervention technique to reduce algal blooms in the Swan-Canning River system. Results from fibreglass tank experiments (1100 L) suggested that the product did not actively attack and lyse algal cells. The product decreased NH 4 and NO x concentrations in treated tanks, both aerated and non-aerated. Product application decreased PO 4 concentrations in non-aerated tanks but not in aerated tanks. The product appeared to suppress algal growth in non-aerated tanks over short periods (several days). Algal growth regularly diminished after product application but reappeared shortly afterwards. Aeration had a negative effect on bacterial proliferation in the tanks, possibly through alteration of environmental conditions (e.g. water mixing). As a consequence of the environmental conditions in the tanks being counterproductive to the development of a representative microbial composition, several aspects regarding the product's effectiveness could not be assessed satisfactorily in the tank experiments. The importance of long-term nutrient immobilisation into a well developed food web and the subsequent nutrient removal through removal of the top order organisms is highlighted.
Details
- Title
- Evaluation of a bacterial algal control agent in tank-based experiments
- Authors/Creators
- M. Schmack (Author/Creator) - Murdoch UniversityJ. Chambers (Author/Creator) - Murdoch UniversityS. Dallas (Author/Creator) - Murdoch University
- Publication Details
- Water Research, Vol.46(7), pp.2435-2444
- Publisher
- Elsevier BV
- Identifiers
- 991005545462007891
- Copyright
- © 2012 Elsevier BV
- Murdoch Affiliation
- School of Environmental Science
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.216 Lake Ecosystems
- Web Of Science research areas
- Engineering, Environmental
- Environmental Sciences
- Water Resources
- ESI research areas
- Environment/Ecology