Development of a novel air pollution monitoring strategy - combining passive sampling with toxicity testing. Present approaches for monitoring risk of air pollutants are limited to grab sample analysis for specific pollutants using concentrations based on independent toxicological and/or epidemiological assessment of compounds. This approach does not allow for evaluation of mixtures or that a given compound may exert different toxic endpoints and is based on short sampling periods. This researc ....Development of a novel air pollution monitoring strategy - combining passive sampling with toxicity testing. Present approaches for monitoring risk of air pollutants are limited to grab sample analysis for specific pollutants using concentrations based on independent toxicological and/or epidemiological assessment of compounds. This approach does not allow for evaluation of mixtures or that a given compound may exert different toxic endpoints and is based on short sampling periods. This research aims to develop and evaluate a novel approach combining extraction of pollutants using time-integrated passive samplers and toxicological evaluation using rapid in-vitro and in-vivo assays. The outcomes provide inexpensive tools for sensitive assessment of pollutant effects and baseline data to derive intervention guidelines based on mixture toxicity.Read moreRead less
New methods assisting the detection and attribution of changes in atmospheric carbon dioxide (CO2) levels. New scientific tools to manage the global environment are an international priority. An Australian breakthrough in technology has the potential to revolutionise the measurement and management of atmospheric carbon dioxide, the single largest anthropogenic contributor to greenhouse warming. The fellowship levers sufficient resources to assess this potential in a number of critical applicatio ....New methods assisting the detection and attribution of changes in atmospheric carbon dioxide (CO2) levels. New scientific tools to manage the global environment are an international priority. An Australian breakthrough in technology has the potential to revolutionise the measurement and management of atmospheric carbon dioxide, the single largest anthropogenic contributor to greenhouse warming. The fellowship levers sufficient resources to assess this potential in a number of critical applications, including: early detection of predicted increases in Southern Ocean carbon dioxide emission; indefinite low cost monitoring of regional carbon flux changes over continental Australia; improved international standards for CO2 measurement; and improved manufacturing components for use world-wide in trace-gas measurement.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120102967
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Interaction between silver ions, silver nanoparticles and reactive oxygen species: implication to toxicity. The project investigates the ability of various different (supported and stabilised) types of nanosized silver particles (SNPs) to oxidatively degrade selected contaminants and or kill microorganism. The project also aims to determine the effect of solution condition (for example pH) and light on SNP longevity and hence their oxidative capacity.
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
Mechanisms for Pyrite Oxidation Control in Acid Mine Drainage. The annual costs of acid rock drainage (ARD) management at operating sites in Australia are $120M p.a.; over 15 years, a total cost of $1.8 billion for the whole industry. There are limitations to the ability of existing systems to cope with high capacity ARD, to the long-term effectiveness of these systems and high potential costs/liability of remediation. The value of the project outcomes to industry and government will be in reduc ....Mechanisms for Pyrite Oxidation Control in Acid Mine Drainage. The annual costs of acid rock drainage (ARD) management at operating sites in Australia are $120M p.a.; over 15 years, a total cost of $1.8 billion for the whole industry. There are limitations to the ability of existing systems to cope with high capacity ARD, to the long-term effectiveness of these systems and high potential costs/liability of remediation. The value of the project outcomes to industry and government will be in reduction of ARD release, well-understood long-term outcomes, reduced cost of treatments and improved control. The scale of these savings is in the tens of $M p.a. but also in potential improvements in environment (acid and toxic metals in streams), health and social quality of life in mining areas and towns.Read moreRead less
Understanding the role of vegetation in nitrogen removal by biofiltration. Many of Australia's bays and waterways are threatened by eutrophication due to excess nitrogen loads, particularly from urban stormwater. Biofiltration systems are a widely used (Melbourne Water alone has a programme of constructing 10000 systems in partnership with municipalities over the next 5 years) and potentially effective treatment, but their nitrogen removal is highly dependent on the type of vegetation used. Th ....Understanding the role of vegetation in nitrogen removal by biofiltration. Many of Australia's bays and waterways are threatened by eutrophication due to excess nitrogen loads, particularly from urban stormwater. Biofiltration systems are a widely used (Melbourne Water alone has a programme of constructing 10000 systems in partnership with municipalities over the next 5 years) and potentially effective treatment, but their nitrogen removal is highly dependent on the type of vegetation used. This project will improve the understanding of the role of vegetation in nitrogen retention by stormwater biofilters, and will thus provide important guidance on plant selection and design for biofiltration.Read moreRead less
Evaluation of reaction mechanisms and products in acid rock drainage treatments. There are more than 54 sites in Australia managing major ARD wastes (either >10% of the waste or >10M tonnes) with another 62 sites with less ARD. At operating sites, the annual costs are $60M p.a.; over 15 years, a total cost of $900M for the whole industry. The value of the project outcomes to industry (and government) in reduction of acid and toxic metal release and reduced cost of treatments is potentially in th ....Evaluation of reaction mechanisms and products in acid rock drainage treatments. There are more than 54 sites in Australia managing major ARD wastes (either >10% of the waste or >10M tonnes) with another 62 sites with less ARD. At operating sites, the annual costs are $60M p.a.; over 15 years, a total cost of $900M for the whole industry. The value of the project outcomes to industry (and government) in reduction of acid and toxic metal release and reduced cost of treatments is potentially in the tens of $M p.a.. Improvements in environmental and social quality of life in mining areas and towns will also result from improved treatment.Read moreRead less
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
Design tools for optimising data centre layout to minimise energy usage. Data centres are major consumers of energy worldwide, mainly through the need to cool the equipment. It has become imperative to develop the science for reducing this consumption. Rising computing demand, increasing power density, and increasing infrastructure and energy costs are major issue for data centres around the world. Our research will provide a powerful alternative to conventional thermal management techniques for ....Design tools for optimising data centre layout to minimise energy usage. Data centres are major consumers of energy worldwide, mainly through the need to cool the equipment. It has become imperative to develop the science for reducing this consumption. Rising computing demand, increasing power density, and increasing infrastructure and energy costs are major issue for data centres around the world. Our research will provide a powerful alternative to conventional thermal management techniques for cooling high-density heat loads in mixed-density environments. We will address the key issue of energy minimisation through a detailed flow analyses by the use of numerical simulations and optimisation algorithms.Read moreRead less
Floc Characteristics in Sheared Systems: Implications to Low Pressure Membrane Filtration in Water Treatment. In this project, we examine the effect of coagulant choice and coagulation conditions on the nature of the flocs formed in drinking water treatment using submerged membrane systems and on the extent of fouling, contaminant removal and difficulties in backwash. We will develop both underpinning knowledge and operational protocols that will assist in improving the efficiency and thus reduc ....Floc Characteristics in Sheared Systems: Implications to Low Pressure Membrane Filtration in Water Treatment. In this project, we examine the effect of coagulant choice and coagulation conditions on the nature of the flocs formed in drinking water treatment using submerged membrane systems and on the extent of fouling, contaminant removal and difficulties in backwash. We will develop both underpinning knowledge and operational protocols that will assist in improving the efficiency and thus reducing the operating costs of submerged membrane water systems. The outcomes of this project will assist our industry partner in developing more cost effective water treatment processes in Australia which will, in turn, assist in increasing market share in the Asian region.Read moreRead less