Pesticides and ozofractionation: An investigation to remove organic and inorganic contaminants from industrial wastewater

Fergusson, Lee (2015) Pesticides and ozofractionation: An investigation to remove organic and inorganic contaminants from industrial wastewater. Asian Journal of Chemistry, 27 (8). pp. 3101-3106. ISSN 0970-7077

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Abstract

In the last 50 years a significant amount of research has been carried out on the treatment of pesticides and industrial wastewater using physicochemical methods. However, ozofractionation has not been investigated as a means to remove pesticides from wastewater, possibly because it is more typically associated with the treatment of water in aquariums. Therefore, the present study was undertaken to assess the impact of ozofractionation on pesticide-contaminated industrial wastewater. A sample was collected from a stormwater holding tank at a pesticide manufacturing site in Australia containing chlorpyrifos, dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethylene (DDE), arsenic and zinc. After preliminary analysis, the sample was subjected to ozofractionation and promising results were observed. Chlorpyrifos, DDT, DDE, arsenic and zinc concentrations were 7.2 µg/L, 108 µg/L, 9.5 µg/L, 0.14 mg/L and 0.44 mg/L before treatment and reduced to <0.5µg/L, <2.0 µg/L, <0.5 µg/L, 0.01 mg/L and <0.005 mg/L respectively after treatment. Before treatment, pesticides and metal concentrations were beyond discharge limits, however ozofractionation brought them within the permissible limits set by environmental agencies and processed wastewater could be discharged to an aquatic ecosystem. These findings indicate that ozofractionation may be a useful method for destroying intractable pesticides and removing heavy metals from industrial wastewater.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Open Access - this work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Faculty / Department / School: Current - Faculty of Business, Education, Law and Arts - School of Linguistics, Adult and Specialist Education
Date Deposited: 08 May 2018 01:03
Last Modified: 03 Sep 2018 03:46
Uncontrolled Keywords: pesticides, chlorpyrifos, DDT, DDE, ozofractionation, wastewater
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050299 Environmental Science and Management not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970105 Expanding Knowledge in the Environmental Sciences
Identification Number or DOI: doi:10.14233/ajchem.2015.18938
URI: http://eprints.usq.edu.au/id/eprint/34032

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