A novel process for removing phosphorus microbiologically from wastewater. Australia is a water limited continent, and its rivers and lakes are priceless assets, but because of climatic conditions, these are especially sensitive to blooms of 'blue green algae'. Some are highly toxic, and water containing them is unsuitable for most purposes. Current technology for P removal requires constructing complex plant configurations, and most of these operate unpredictably and unreliably. This project ....A novel process for removing phosphorus microbiologically from wastewater. Australia is a water limited continent, and its rivers and lakes are priceless assets, but because of climatic conditions, these are especially sensitive to blooms of 'blue green algae'. Some are highly toxic, and water containing them is unsuitable for most purposes. Current technology for P removal requires constructing complex plant configurations, and most of these operate unpredictably and unreliably. This project will develop and fully evaluate a revolutionarily different alternative with a fully aerobic system, capable of being added onto the end of a conventional treatment plant, making protection of rivers and streams simpler and more feasible. Read moreRead less
Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally fri ....Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally friendly and safe method to protect our rivers, streams and oceans form the harmful consequences of these problemsRead moreRead less
Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial popula ....Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial populations are present and responsible for biosolids digestion, how these populations might change with changing operational conditions, and whether these changes in populations relate to production of odors. This information will enable these digesters to be better managed and operated.Read moreRead less
Functional Analyses of Bacteria Involved in Enhanced Biological Phosphorus Removal from Wastewater. The abundant growth of blue-green algae in global waterways is substantially caused by phosphorus (P) release from wastewater treatment plants. This environmental drama can be mitigated against by P-accumulating bacteria partitioning the P inside their cells. The P-removal process often fails, but since the metabolism of P-accumulating bacteria is unknown, remedial actions are based on conjecture ....Functional Analyses of Bacteria Involved in Enhanced Biological Phosphorus Removal from Wastewater. The abundant growth of blue-green algae in global waterways is substantially caused by phosphorus (P) release from wastewater treatment plants. This environmental drama can be mitigated against by P-accumulating bacteria partitioning the P inside their cells. The P-removal process often fails, but since the metabolism of P-accumulating bacteria is unknown, remedial actions are based on conjecture. This fundamental, knowledge-generating project will address this shortfall and will develop methods to evaluate the activity of P-accumulating bacteria, contributing substantial understanding of their metabolism. The final goal is to promote stable, reproducible P-removal from wastewater.Read moreRead less
Microbial junk food: developing synthetic platforms for plastic degradation. This project aims to establish the genetic basis of polyethelene biodegradation (PED) by microbes from the gut microbiome of plastic-eating caterpillars. It will transform the active microbial PED genes into carefully designed synthetic microbes for efficient, safe and large-scale PED. The project will combine innovative functional microbial genetic tools and synthetic biology techniques with solid biochemistry and bioi ....Microbial junk food: developing synthetic platforms for plastic degradation. This project aims to establish the genetic basis of polyethelene biodegradation (PED) by microbes from the gut microbiome of plastic-eating caterpillars. It will transform the active microbial PED genes into carefully designed synthetic microbes for efficient, safe and large-scale PED. The project will combine innovative functional microbial genetic tools and synthetic biology techniques with solid biochemistry and bioinformatics to produce translatable synthetic platforms containing key genes optimised for efficient PE waste removal. The outcomes will have the potential to transform the relative ineffective and expensive current methods for PE disposal into flexible, cost-effective and sustainable solutions applicable to multiple sectors.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.
Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleachin ....Bioleaching of copper in tropical systems. This project is focussed on bioleaching of chalcopyrite, to recover copper from currently sub-economic low-grade ore. Conventional mining processes are too energy intensive to economically extract copper from low-grade ores. However, these waste ores are still subject to natural, bacterial leaching causing environmental harm. Enhancing this natural process by removing key limitations in bacterial colonisation of metal sulfides aims to enhance bioleaching of low-grade ores creating a win-win scenario, reducing environmental harm while extracting value from these currently uneconomic materials.Read moreRead less
Use of Organic Residues in Edible Mushroom Production. The aims are to develop growth and casing materials for mushroom production based on organic wastes. Casing peat is the most expensive raw ingredient used in mushroom production and there are major concerns over supply due to increasing environmental concerns in supplier countries and quarantine issues such as the recent foot and mouth outbreak in Europe. This project will develop alternatives to imported peats as casing materials and invest ....Use of Organic Residues in Edible Mushroom Production. The aims are to develop growth and casing materials for mushroom production based on organic wastes. Casing peat is the most expensive raw ingredient used in mushroom production and there are major concerns over supply due to increasing environmental concerns in supplier countries and quarantine issues such as the recent foot and mouth outbreak in Europe. This project will develop alternatives to imported peats as casing materials and investigate a range of organic residues which can be used as basic growth media for button and exotic mushrooms. This will increase the viability and sustainability of the mushroom industry in Australia.Read moreRead less
The only constant is change: ecology and evolution of phage-host interactions in a model ecosystem. Microorganisms underpin life on Earth, but our understanding of their diversity and activity is limited by our inability to grow most of them in the laboratory. Recently, new techniques have emerged that allow access to the genetic information of all microorganisms by directly sequencing DNA and RNA from the environment. In this research we will further develop these frontier technologies, promoti ....The only constant is change: ecology and evolution of phage-host interactions in a model ecosystem. Microorganisms underpin life on Earth, but our understanding of their diversity and activity is limited by our inability to grow most of them in the laboratory. Recently, new techniques have emerged that allow access to the genetic information of all microorganisms by directly sequencing DNA and RNA from the environment. In this research we will further develop these frontier technologies, promoting this new area of science in Australia. We will apply these techniques to microbial communities involved in wastewater treatment in order to understand the interactions between microorganisms and the viruses that infect them. Understanding this interaction will have important implications for optimising these treatment processes.Read moreRead less
In situ remediation in mine site rehabilitation. In situ remediation in mine site rehabilitation. By enhancing and guiding abiotic and biotic processes of soil development, this project aims to accelerate the in situ remediation of bauxite residue (alumina refining tailings). Over 7 gigatonnes of tailings are produced globally every year, comprising complex mineral assemblages at extremes of pH and salinity with minimal biological activity. This project will build detailed knowledge on the chemi ....In situ remediation in mine site rehabilitation. In situ remediation in mine site rehabilitation. By enhancing and guiding abiotic and biotic processes of soil development, this project aims to accelerate the in situ remediation of bauxite residue (alumina refining tailings). Over 7 gigatonnes of tailings are produced globally every year, comprising complex mineral assemblages at extremes of pH and salinity with minimal biological activity. This project will build detailed knowledge on the chemical, physical, and biological properties of bauxite residue and apply this to develop field-scale in situ remediation strategies. This research will also advance understanding of soil development and primary succession of microbial communities in extreme, anthropogenic environments such as those presented by tailings.Read moreRead less