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Elemental release and oxidant production from mixed coal mine dusts. The aim of this project is to understand the implications of physical and chemical characteristics of mixed coal mine dusts to their elemental release and oxidant production. The re-emergence of occupational lung diseases in recent years has revealed a major knowledge gap in the area of respirable particle reactivity. This research will examine the role between coal mine dust and their capacity to produce reactive oxygen specie ....Elemental release and oxidant production from mixed coal mine dusts. The aim of this project is to understand the implications of physical and chemical characteristics of mixed coal mine dusts to their elemental release and oxidant production. The re-emergence of occupational lung diseases in recent years has revealed a major knowledge gap in the area of respirable particle reactivity. This research will examine the role between coal mine dust and their capacity to produce reactive oxygen species, with the focus being on the role of physical and chemical properties of particles and how they transform with age. The findings will be used to develop screening protocols and develop novel monitoring / mitigation strategies for coal mine workers.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE140100007
Funder
Australian Research Council
Funding Amount
$330,000.00
Summary
An integrated facility for the advanced characterisation of environmental particles. An integrated facility for the advanced characterisation of environmental particles: This project will result in development of a state-of-the-art facility for comprehensive determination of particle size, concentration and surface properties for a wide range of environmentally occurring particles, in rapid succession. Combining several novel and advanced instruments into an integrated facility will permit in si ....An integrated facility for the advanced characterisation of environmental particles. An integrated facility for the advanced characterisation of environmental particles: This project will result in development of a state-of-the-art facility for comprehensive determination of particle size, concentration and surface properties for a wide range of environmentally occurring particles, in rapid succession. Combining several novel and advanced instruments into an integrated facility will permit in situ and kinetic experiments that are currently unable to be easily undertaken anywhere in Australia. This will enable major progress for internationally significant research activities in areas including sediment geochemistry, contaminant mobility, and biogeochemistry. The project will thus help to address several pressing global environmental issues while adding substantial new capabilities for Australian research.Read moreRead less
Redox transformations of natural organic matter. This project aims to determine the electron transfer (redox) properties of terrestrially and microbially-derived natural organic matter (NOM) and the implications of these redox characteristics to reactive oxygen species generation, metals transformation and carbon cycling. Experimental and computational studies using model compounds containing quinone and thiol-containing functional groups as well as well-characterised humic substances and algal ....Redox transformations of natural organic matter. This project aims to determine the electron transfer (redox) properties of terrestrially and microbially-derived natural organic matter (NOM) and the implications of these redox characteristics to reactive oxygen species generation, metals transformation and carbon cycling. Experimental and computational studies using model compounds containing quinone and thiol-containing functional groups as well as well-characterised humic substances and algal exudates will be undertaken under both dark and light conditions. Kinetic models of these processes will be developed enabling prediction of the impact of NOM-mediated electron transfer processes on oxidant generation, metals transformation and carbon cycling.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE120100076
Funder
Australian Research Council
Funding Amount
$155,000.00
Summary
The first Australian high pressure Synchrotron facility for geoscience research. In high-pressure mineral physics and chemistry, mineral properties, stress-strain relationships and processes like partial melting are applied to geophysical research about the deep Earth. This project will provide a large volume, high pressure capability at the Australian Synchrotron which will allow these mineral properties to be measured under conditions which simulate the deep earth.
The Impact of Trawling on Nitrogen Removal through Sediment Denitrification in Western Moreton Bay. Nutrient enrichment of coastal waters is a national problem requiring urgent action. Sediment denitrification is one of the few natural processes capable of counteracting the process of eutrophication. Although trawling is undertaken in coastal water bodies around Australia the impact on sediment denitrification and the nitrogen budgets of coastal systems has never been considered. Many hundred's ....The Impact of Trawling on Nitrogen Removal through Sediment Denitrification in Western Moreton Bay. Nutrient enrichment of coastal waters is a national problem requiring urgent action. Sediment denitrification is one of the few natural processes capable of counteracting the process of eutrophication. Although trawling is undertaken in coastal water bodies around Australia the impact on sediment denitrification and the nitrogen budgets of coastal systems has never been considered. Many hundred's of millions of dollars are likely to be spent over the next ten years on the management of nitrogen enrichment of Australia's coastal waters. This study will quantify the impact of trawling on sediment denitrification; information which is critical for the efficient allocation of management resources.Read moreRead less
The importance of sediment denitrification in the nitrogen budget of the inshore wet tropics section of the Great Barrier Reef Lagoon. The Great Barrier Reef (GBR) is a World Heritage Area that has significant ecological, economical and social values for the Australian (world) community. Nutrient over-enrichment (eutrophication) associated with runoff from adjacent catchments is a major threat to the GBR. This study will quantify what proportion of the terrestrial nitrogen load delivered to the ....The importance of sediment denitrification in the nitrogen budget of the inshore wet tropics section of the Great Barrier Reef Lagoon. The Great Barrier Reef (GBR) is a World Heritage Area that has significant ecological, economical and social values for the Australian (world) community. Nutrient over-enrichment (eutrophication) associated with runoff from adjacent catchments is a major threat to the GBR. This study will quantify what proportion of the terrestrial nitrogen load delivered to the inshore wet tropics section of the Great Barrier Reef Lagoon is removed through sediment denitrification. Critical information for understanding the process of eutrophication in the GBR Lagoon that will be used by our Industry Partner in the management, rehabilitation and protection of the GBR.Read moreRead less
Unraveling hexavalent chromium formation and fate in fire-impacted soil. Hexavalent chromium is a cancer-causing toxin. It can form via heating of natural (unpolluted) soil during bushfires. However, little is known of the processes and factors which govern its formation and behavior in fire-impacted soil. Using a combination of field-based investigations, innovative experiments and cutting edge analytical approaches, this project aims to systematically explore hexavalent chromium formation vi ....Unraveling hexavalent chromium formation and fate in fire-impacted soil. Hexavalent chromium is a cancer-causing toxin. It can form via heating of natural (unpolluted) soil during bushfires. However, little is known of the processes and factors which govern its formation and behavior in fire-impacted soil. Using a combination of field-based investigations, innovative experiments and cutting edge analytical approaches, this project aims to systematically explore hexavalent chromium formation via fire-induced heating of soil and to examine its post-fire fate in soil systems. The results will transform our understanding of the chromium cycle at the Earth’s surface, and will facilitate accurate assessment and mitigation of the risks posed by hexavalent chromium formation in fire-impacted soil.Read moreRead less
The structure and geochemistry of mineral interfaces in Earth's mantle. The interfaces between mineral grains are critical in determining rock properties and behaviour, yet we know little about them. This project uses emerging nano-technologies to establish the structure, chemistry and energy characteristics of interfaces in rocks from Earth’s mantle that control fundamental Earth processes such as plate tectonics and melting. The expected outcomes include a new understanding on one of the funda ....The structure and geochemistry of mineral interfaces in Earth's mantle. The interfaces between mineral grains are critical in determining rock properties and behaviour, yet we know little about them. This project uses emerging nano-technologies to establish the structure, chemistry and energy characteristics of interfaces in rocks from Earth’s mantle that control fundamental Earth processes such as plate tectonics and melting. The expected outcomes include a new understanding on one of the fundamental controls on rock properties and an enhanced ability to predict and model rock behaviour. The project provides research training in innovative research methodologies, will strengthen Australia’s leadership in nano-geoscience and will provide new methodologies for advanced rock characterisation.Read moreRead less
Geochemistry of ore metals at very high temperatures. The world’s largest copper and gold mines occur in extinct volcanoes around the Pacific Rim. Understanding how these essential metals are mobilised from magmas in the roots of volcanoes to become ore deposits and how to recognize where this has occurred is crucial in exploration for new deposits.