Phragmites, Phragmites australis, also known as European common reed, is an invasive perennial grass that spreads quickly and out-competes native species for water, sunlight and nutrients. It releases toxins from its roots into the soil to further hinder the growth of and kill surrounding plants, leading to a decrease in biodiversity and habitat. There is no single method that is a ‘quick fix’ to manage phragmites. Instead, a continuous, multi-method approach is required for success and long-term results. Current removal methods include herbicides, prescribed fire, cutting underwater, flooding and physical removal.
Turning waste PPE into water and vinegar
A process to convert PPE waste into harmless byproducts is a potential gamechanger to the problem of PPE waste filling landfills and polluting oceans and rivers. Shredded masks, gowns, gloves and plastic safety glasses go into a machine; hot, pressurised water and compressed air are applied; water and acetic acid are the end-products. The PPE-to-liquid process is carried out at a temperature of 300°C and takes about an hour in a small prototype machine in a laboratory in the faculty. Gaseous by-products from the process are oxygen and low concentrations of carbon dioxide which can be safely discharged. “This is a clean, chemical-free solution which will be a game changer internationally,” says Dr Saied Baroutian, an associate professor in the faculty’s Department of Chemical and Materials Engineering.