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Electron transport catalysis in organohalide pollutant respiration. This project aims to understand the link between substrate specificity and gene sequence of dehalogenating enzymes in organohalide respiring bacteria (ORB) and the mechanism by which electrons are transferred to dehalogenating enzymes through protein-protein interactions. Organohalides were present in Earth's early history and now pollute the environment globally. Organohalide respiring bacteria (ORB) can degrade these pollutant ....Electron transport catalysis in organohalide pollutant respiration. This project aims to understand the link between substrate specificity and gene sequence of dehalogenating enzymes in organohalide respiring bacteria (ORB) and the mechanism by which electrons are transferred to dehalogenating enzymes through protein-protein interactions. Organohalides were present in Earth's early history and now pollute the environment globally. Organohalide respiring bacteria (ORB) can degrade these pollutants by using them as terminal electron acceptors in their respiratory metabolism. This represents one of the most ancient respiratory systems on Earth about which little is known. This project will add to our fundamental knowledge of microbial evolution and metabolic systems, and pave the way for next generation organohalide remediation technologies.Read moreRead less
Assessing the impact of habitat restoration on the rates of recovery of four native fish species using advanced statistical models. This project will develop statistical modelling tools to assess how quickly threatened native fish populations recover following habitat restoration. The outcome of this project will aid in understanding the use of habitat restoration in managing endangered stocks of Murray Cod, Trout Cod, Silver Perch and Golden Perch in the Murray River.
New perspectives on arsenic speciation and fate in anoxic aqueous environments: Resolving unexplored interactions with the sulfur cycle. Using exciting new experiments and innovative analyses, this project will provide transformational insights into how sulfur cycling in the Earth’s critical zone affects arsenic speciation and fate. The project will resolve, for the first time, unexplored interactions between arsenic geochemistry and the low-temperature formation and transformation of metastable ....New perspectives on arsenic speciation and fate in anoxic aqueous environments: Resolving unexplored interactions with the sulfur cycle. Using exciting new experiments and innovative analyses, this project will provide transformational insights into how sulfur cycling in the Earth’s critical zone affects arsenic speciation and fate. The project will resolve, for the first time, unexplored interactions between arsenic geochemistry and the low-temperature formation and transformation of metastable iron sulfide minerals. The outcomes will provide crucially important new perspectives on arsenic geochemistry in anoxic soils, sediments and groundwater systems.Read moreRead less
Interactions between antimony and the sulphur cycle. This project aims to unravel unexplored interactions between the sulphur cycle and fundamentally important aspects of antimony geochemistry in the Earth’s critical zone. This project will resolve interactions between antimony geochemistry and the low-temperature formation and transformation of metastable iron sulphide minerals. The outcomes are expected to provide crucially important perspectives on antimony geochemistry in anoxic soils, sedim ....Interactions between antimony and the sulphur cycle. This project aims to unravel unexplored interactions between the sulphur cycle and fundamentally important aspects of antimony geochemistry in the Earth’s critical zone. This project will resolve interactions between antimony geochemistry and the low-temperature formation and transformation of metastable iron sulphide minerals. The outcomes are expected to provide crucially important perspectives on antimony geochemistry in anoxic soils, sediments and groundwater systems. This understanding should lead to more accurate geochemical risk assessments and better site treatment strategies for environmental antimony contamination.Read moreRead less
Evolutionary origins of sexual parasitism in an Australian freshwater fish. Carp gudgeons are the most abundant, widespread and biodiverse freshwater fishes in southeastern Australia. The unacknowledged presence of many cryptic species and sexually-parasitic lineages severely taints all research on this cornerstone group. This project aims to provide unrivalled evolutionary, genomic, and taxonomic insights into this new instance of vertebrate sexual parasitism, which offers a unique mix of resea ....Evolutionary origins of sexual parasitism in an Australian freshwater fish. Carp gudgeons are the most abundant, widespread and biodiverse freshwater fishes in southeastern Australia. The unacknowledged presence of many cryptic species and sexually-parasitic lineages severely taints all research on this cornerstone group. This project aims to provide unrivalled evolutionary, genomic, and taxonomic insights into this new instance of vertebrate sexual parasitism, which offers a unique mix of research advantages not displayed by any other sexual/unisexual complex. The knowledge gained could impact many research fields, including evolutionary theory addressing the unexplainable prevalence of sex, native fish ecology, and environmental monitoring of the Murray-Darling Basin, an ecosystem of world significance.Read moreRead less
Biogeochemical remediation approaches for PFAS contaminated environments. This project aims to identify and harvest microorganisms capable of directly or indirectly affecting PFOS or PFOA degradation in the environment. Fluorinated compounds such as PFOS and PFOA in firefighting foams are contaminants of concern now routinely detected in contaminated groundwater and soil globally. Understanding the role of microorganisms, and the biogeochemical processes they perform in relation to fluorinated c ....Biogeochemical remediation approaches for PFAS contaminated environments. This project aims to identify and harvest microorganisms capable of directly or indirectly affecting PFOS or PFOA degradation in the environment. Fluorinated compounds such as PFOS and PFOA in firefighting foams are contaminants of concern now routinely detected in contaminated groundwater and soil globally. Understanding the role of microorganisms, and the biogeochemical processes they perform in relation to fluorinated compounds, will inform handling of contaminated sites and lead to development of cost effective and sustainable remediation technologies. Read moreRead less
Special Research Initiatives - Grant ID: SR180100030
Funder
Australian Research Council
Funding Amount
$1,103,883.00
Summary
Development of electrochemically activated sorbents for PFAS defluorination. This project aims to develop a new treatment technology to completely defluorinate per- and poly-fluroalkyl substances (PFAS) and to treat significant water quantities. The majority of existing water treatment technologies are unable to remove PFAS to the desired extent, are prohibitively expensive or are only useful for a very limited lifespan. This project is expected to develop a new treatment technology with the abi ....Development of electrochemically activated sorbents for PFAS defluorination. This project aims to develop a new treatment technology to completely defluorinate per- and poly-fluroalkyl substances (PFAS) and to treat significant water quantities. The majority of existing water treatment technologies are unable to remove PFAS to the desired extent, are prohibitively expensive or are only useful for a very limited lifespan. This project is expected to develop a new treatment technology with the ability to completely defluorinate PFAS, treat significant water quantities and help address many of the pressing concerns facing water treatment operators. This technology is also scalable, and can potentially be used to treat significant quantities of contaminated water.Read moreRead less
Remediation of groundwater using permeable reactive barriers. Permeable reactive barriers are passive subsurface installations that remove contamination from groundwater as it flows through a reactive substrate. This project will develop new permeable reactive barriers that will benefit the nation by building skills and knowledge in an area of growth in Australian industry, namely the rehabilitation of industrial lands and the protection and remediation of Australia's critical groundwater source ....Remediation of groundwater using permeable reactive barriers. Permeable reactive barriers are passive subsurface installations that remove contamination from groundwater as it flows through a reactive substrate. This project will develop new permeable reactive barriers that will benefit the nation by building skills and knowledge in an area of growth in Australian industry, namely the rehabilitation of industrial lands and the protection and remediation of Australia's critical groundwater sources. The project is aimed at remediating an industrially contaminated site in the Hunter Valley, New South Wales, thereby contributing to the environmental improvement of that region. The technology developed will have wide application to other sites, both nationally and internationally.Read moreRead less
Antimony geochemistry and Earth's dynamic near-surface iron cycle. This project aims to advance our fundamental understanding on the geochemistry of antimony – a critical mineral resource and environmental pollutant of growing concern. This will be achieved by pioneering an innovative combination of advanced synchrotron-based tools and sophisticated isotopic approaches to unravel important interactions between antimony geochemistry and the iron cycle in soils, sediments and aquatic systems. The ....Antimony geochemistry and Earth's dynamic near-surface iron cycle. This project aims to advance our fundamental understanding on the geochemistry of antimony – a critical mineral resource and environmental pollutant of growing concern. This will be achieved by pioneering an innovative combination of advanced synchrotron-based tools and sophisticated isotopic approaches to unravel important interactions between antimony geochemistry and the iron cycle in soils, sediments and aquatic systems. The expected outcomes will provide novel insights into refined strategies to manipulate coupling between antimony mobility and iron cycling for improved rehabilitation of degraded landscapes, safe disposal of hazardous wastes and sustainable exploitation of Australia’s valuable antimony reserves.Read moreRead less
Restoration trajectories of stream ecosystems degraded by urban stormwater runoff: a large-scale experiment in urban hydrology and stream ecology. This project aims to assess innovative dispersed stormwater retention systems in catchments for protection and restoration of urban streams. It will improve the ecological condition of several study streams and provide scientific support for new policies and practices for urban water management, with multiple environmental and community benefits.