Articles tagged with Fly Ash
A new review paper warns that wildfire smoke's health risks remain poorly understood due to a lack of direct biomedical evidence. The study argues that most current research relies on population-level correlations rather than detailed biomedical analysis.
A growing body of research links environmental pollutants to worsened health and shorter life spans in childhood cancer survivors. The study found that only 25% of pediatric oncology providers felt comfortable discussing environmental pollutant impacts with patients.
A study published in Separation and Purification Technology suggests that fly ash can be repurposed for water treatment applications, offering a sustainable solution to environmental concerns. The authors review the literature on fly ash and identify its potential as a low-cost, lightweight material for crafting ceramic membranes.
RMIT's low-carbon concrete has been shown to recycle double the amount of coal ash compared to current standards, reducing cement requirements by half. The new mixture also performs exceptionally well over time, with large concrete beam prototypes meeting Australian Standards for engineering performance and environmental requirements.
Researchers at UBC Okanagan are revisiting old building practices to improve sustainability. They found that wood fly ash can enhance the strength of rammed earth construction, reducing sand exploitation and increasing insulation properties.
A new study by Duke University researchers reveals that the amount of toxic elements leaching out of coal ash depends largely on its nanoscale structure. The discovery highlights the complexity of coal ash as a material and emphasizes the need for closer examination of fine details within the ash to understand environmental risks.
Rice University scientists developed a rapid process to remove heavy metals from coal fly ash using flash Joule heating. This purified coal fly ash can be used in infrastructure projects, reducing emissions by 30% and improving concrete strength and elasticity.
Rice University scientists have developed a method to extract rare earth elements from fly ash, bauxite residue, and electronic waste using flash Joule heating. This process improves yields and reduces the use of strong acids, making it a more sustainable solution for recycling these materials.
Scientists at Duke University have developed new tests to detect coal ash contamination in soil, finding high levels of arsenic, selenium, and other toxic elements. The tests revealed significant fly ash accumulation near coal-fired power plants, posing health risks to nearby communities.
Researchers develop simple and efficient method to recover precious rare-earth elements from coal fly ash using an ionic liquid. The process produces a solution rich in rare-earth elements with limited impurities, offering a potential solution for recycling materials from waste coal fly ash.
A new study reveals that coal fly ash makes up a significant portion of particulate organic carbon carried by the Yangtze River in China. The study found that human activities, such as coal burning, have an outsized impact on river sediment, comparable to natural processes.
Scientists at Chalmers University of Technology have created a unique method to extract valuable metals like zinc from fly ash produced by incinerating solid waste. This innovative approach can help reduce environmental pollution and increase the profitability of waste incineration, while also promoting a more circular economy.
Researchers at the University of Johannesburg found that high-temperature heat-treatment can significantly improve fly ash geopolymer concrete's resistance to extreme alkali attack. The findings show that the material maintains about 50% residual strength after being immersed in an extreme alkali medium.
Researchers at Duke University have developed a new forensic tracer that uses lead isotopes to detect coal fly ash in dust and other solids. The tracer can distinguish between the chemical signature of lead from coal ash and lead from other sources, providing a powerful tool for tracking exposure risks near coal ash ponds and landfills.
A new, greener construction binder has been developed using fly ash, reducing environmental pollution and improving material quality. The technology, valued at KRW 100 million, has been transferred to a company, Hawoo Eco-friendly Construction Materials Co., Ltd., which plans to produce lightweight aggregates for concrete plants.
Researchers at Washington State University have developed a strong, durable concrete that uses fly ash as a binder and eliminates the use of environmentally intensive cement. This new concrete reduces energy demand and greenhouse emissions by utilizing coal waste and significantly lowering its environmental impact.
Researchers create environmentally friendly composite binder using fly ash, reducing carbon dioxide emissions and the need for sodium-based activators. The new binder replaces Portland cement in concrete production with minimal impact on compressive strength.
A study investigates the feasibility of producing autoclaved aerated concrete (AAC) by combining MSWI bottom ash with CFBC fly ash, significantly reducing material costs. The researchers found that satisfactory properties can be achieved using this combination without additional additives.
A UT Arlington civil engineering team has installed a new mix of lime and fly ash on a section of U.S. 82 to reduce soil sulfate heaving and extend the life of the highway. The project aims to increase road longevity and reduce deterioration, with the potential to benefit motorists' vehicles.
Researchers from the University of California, Berkeley, have found inspiration in ancient Roman concrete to create more durable and sustainable modern concrete. The discovery could help reduce carbon emissions from cement production and improve the lifespan of structures in ocean environments.
Researchers at the University of Granada have developed a self-compacting concrete using ash from olive pruning residue pellets, reducing time and costs. The new concrete has a higher compression strength than conventional concrete without requiring additional filler materials.
Researchers at Lehigh University developed a method to reduce mercury emissions from coal-fired power plants by modifying boiler operating conditions. The technique achieved a 50-75% reduction of total mercury in flue gas with minimal impact on plant performance and fuel cost.
Dr Vute Sirivivatnanon has won the Mohan Malhotra Award for his work in turning industrial waste into a useful component of concrete. His research resulted in the development of High Slag cement concrete, High Volume Fly Ash concrete and Silica Fume concrete being used in high-profile construction projects.
Researchers have developed a new method to create activated carbon products from unburned coal waste, offering a cost-effective and environmentally friendly alternative. The process separates the fly ash from the unburned carbon and activates it for high surface area production with yields over 70 percent.
A licensing agreement between Michigan Technological University and Mineral Resource Technologies aims to commercialize the recovery and processing of fly ash. The technology separates out carbon, iron oxide, and cenophores from the high-carbon byproduct, enabling its use as a replacement for cement and filler for various products.