Degradation of Trace Contaminants Using Sonochemistry and Peroxide Scavenging Advanced Oxidation Processes. Sonochemical degradation of hazardous organic compounds in aqueous solution has been examined extensively in recent years and found to be an effective means of waste treatment however the scavenging of hydroxyl radicals by the relatively high concentrations of hydrogen peroxide produced limits the amount of reactive radicals accessible to target molecules. In this project we will investiga ....Degradation of Trace Contaminants Using Sonochemistry and Peroxide Scavenging Advanced Oxidation Processes. Sonochemical degradation of hazardous organic compounds in aqueous solution has been examined extensively in recent years and found to be an effective means of waste treatment however the scavenging of hydroxyl radicals by the relatively high concentrations of hydrogen peroxide produced limits the amount of reactive radicals accessible to target molecules. In this project we will investigate, by both experimental and computational means, options for the regeneration of hydroxyl radicals through use of hydrogen peroxide. Methods of particular interest include use of Fenton's reagent and ozone.Read moreRead less
Biological phosphorous removal for wastewater treatment. The aim is to provide a scientific basis for understanding how phosphorous can be removed in wastewater treatment plants, using environmentally safe biological methods rather than by using chemicals. This is expected to lead to improved performance in wastewater treatment plants, which will be of economic and environmental benefit, particularly to regional communities in inland Australia.
Application of nano-sized zero valent iron particles to agrochemicals degradation through Fenton's reagent oxidation. Zero-valent iron (ZVI) has been successfully used for the degradation of a wide range of contaminant organics in groundwaters in recent years. The rates of degradation however are relatively slow and render the process unsuitable for situations where there are limits on the time available for reaction. An innovative approach is to couple the dissolution of ZVI with hydrogen perox ....Application of nano-sized zero valent iron particles to agrochemicals degradation through Fenton's reagent oxidation. Zero-valent iron (ZVI) has been successfully used for the degradation of a wide range of contaminant organics in groundwaters in recent years. The rates of degradation however are relatively slow and render the process unsuitable for situations where there are limits on the time available for reaction. An innovative approach is to couple the dissolution of ZVI with hydrogen peroxide addition thereby generating hydroxyl radicals as a result of Fenton's reagent reactions. The efficacy of using this innovative ZVI/H2O2 process to degrade herbicides and pesticides of concern to Australian agriculture is investigated at laboratory and field scale in this project.Read moreRead less
Photodesorption Phenomena and Photoreactive Nanosorbent Materials for Water and Wastewater Purification. Introducing more efficient production of drinking water and wastewater treatment methods for reuse is important to address increasing water scarcity in Australia. The proposed project will develop a water purification technology to remove pollutants using a recently discovered process. This process offers simple and affordable operation that is clean, robust and requires minimal attention. Th ....Photodesorption Phenomena and Photoreactive Nanosorbent Materials for Water and Wastewater Purification. Introducing more efficient production of drinking water and wastewater treatment methods for reuse is important to address increasing water scarcity in Australia. The proposed project will develop a water purification technology to remove pollutants using a recently discovered process. This process offers simple and affordable operation that is clean, robust and requires minimal attention. The technology is particularly suitable for small-scale applications in rural and remote areas, and has significant export potential. The project will strengthen established links between Australian and Korean research centres through the production of improved nanomaterials, and the development of the novel water purification technologyRead moreRead less
An innovative strategy for stormwater remediation and reduction of contaminant supply from catchments. Many urbanised harbours world-wide are polluted and the main source is stormwater. Currently, emphasis is to remove gross pollutants from stormwater using numerous devices scattered through the catchment. In a radical shift from traditional approaches, we will identify primary contaminant sources in the catchment for later targeted education and regulation and a single remediation device will r ....An innovative strategy for stormwater remediation and reduction of contaminant supply from catchments. Many urbanised harbours world-wide are polluted and the main source is stormwater. Currently, emphasis is to remove gross pollutants from stormwater using numerous devices scattered through the catchment. In a radical shift from traditional approaches, we will identify primary contaminant sources in the catchment for later targeted education and regulation and a single remediation device will remove most toxic substances in stormwater currently discharged to estuaries. Stormwater reuse will provide a new valuable urban resource. This paradigm shift in traditional stormwater strategy will ensure biodiversity and ecologically sustainable development of urbanised ports. Port Jackson is used as a test case.Read moreRead less
Underlying mechanisms of e-waste bioleaching and hydropyrolysis. The project will develop a reclamation technology with an ecologically sustainable solution to e-waste management. Focusing on printed circuit boards, we will use our novel bioleaching and hydropyrolysis methods to process e-wastes, recover base and precious metals and reclaim energy. This will create safe working methods, high recycling efficiencies and generation of products from e-wastes.
A pilot study to demonstrate the use of 15N tracers for determining the flow of nitrogen through lower food webs. This project will have a significant impact on the way wetland wastewater treatment and reuse (WWTR) facilities are constructed in the future. Addressing the key biochemical issues to WWTR systems this study will facilitate improved construction design and management to optimise treatment performance. As National Priority One Area, sustainable water use and the efficiency of WWTR sys ....A pilot study to demonstrate the use of 15N tracers for determining the flow of nitrogen through lower food webs. This project will have a significant impact on the way wetland wastewater treatment and reuse (WWTR) facilities are constructed in the future. Addressing the key biochemical issues to WWTR systems this study will facilitate improved construction design and management to optimise treatment performance. As National Priority One Area, sustainable water use and the efficiency of WWTR systems is fundamental to our economic and social development. The results gleaned from this study will assist in the future design of WWTR systems that will be transferable outside the local study area and as such be of potential benefit both Nationally and internationally.Read moreRead less
Modelling contaminant dynamics in a well-mixed/stratified estuary. The proposed mixed/stratified estuarine model is unique and will predict effects of stormwater discharge on water quality, provide guidelines for loading from various contaminant sources, assess impact of marine construction activities, establish effects of natural and anthropogenic resuspension and determine spatial/temporal changes in contaminant distributions. Knowledge generated will assist making decisions locally and overse ....Modelling contaminant dynamics in a well-mixed/stratified estuary. The proposed mixed/stratified estuarine model is unique and will predict effects of stormwater discharge on water quality, provide guidelines for loading from various contaminant sources, assess impact of marine construction activities, establish effects of natural and anthropogenic resuspension and determine spatial/temporal changes in contaminant distributions. Knowledge generated will assist making decisions locally and overseas regarding the protection of valuable living resources, the future environmental status of estuarine systems under alternative management and remedial strategies, management contaminated sediments, new legislation for best management practise, and support for long-term policy development for this estuary type. Read moreRead less
New ultraviolet light sources for the disinfection of drinking water and re-cycled waste-water. The disinfection of municipal drinking-water supplies and treatment of waste-water by exposure to high-power ultraviolet (UV) light is now a practical alternative to chlorination. UV light can kill or sterilize the micro-organisms that pose a health hazard through highly selective photo-biological reactions that disrupt the microbial DNA. The aim of this project is to research and develop new 'germici ....New ultraviolet light sources for the disinfection of drinking water and re-cycled waste-water. The disinfection of municipal drinking-water supplies and treatment of waste-water by exposure to high-power ultraviolet (UV) light is now a practical alternative to chlorination. UV light can kill or sterilize the micro-organisms that pose a health hazard through highly selective photo-biological reactions that disrupt the microbial DNA. The aim of this project is to research and develop new 'germicidal' UV light sources based on Barrier Discharge lamps, operating in novel excitation regimes, to yield high UV efficiency. Successful demonstration of the technology will provide solutions to the growing economic and environmental challenges relating to water conservation within Australia. Read moreRead less