The Circular Economy Grand Challenge — part of the university’s Integrated Innovation Network (I2N) — encourages multi-disciplinary teams to create scalable, sustainable solutions to environmental challenges. Each of the three top teams received $10,000 to bring their ideas to life, while two others earned special recognition awards for creative approaches to waste reduction.
Among the $10,000 winners, Every Blade Counts targets one of renewable energy’s toughest waste problems: wind turbine blade disposal. The team is developing cost-effective methods to recover silica from decommissioned blades and repurpose it for construction materials — diverting thousands of tonnes of waste from landfills and reducing demand for virgin silica mining.
Another winner, ReCrete, reimagines concrete waste from Australia’s construction industry — the country’s largest waste source — as a soil amendment for agriculture. By using crushed concrete’s calcium content to neutralize soil acidity, ReCrete aims to replace traditional lime production, lowering emissions and improving soil health.
The third $10,000 recipient, Zyora Upcycled Skincare, focuses on repurposing organic waste from breweries and biotech fermentation into high-value skincare ingredients. Australia generates more than 14 million tonnes of organic waste annually, and this project highlights the potential for circularity in the cosmetics industry by recovering bioactives from yeast waste streams.
The Grounds to Growth team, which earned the Best Student Team Award and $2,000, plans to turn used coffee grounds into fresh mushrooms grown in a retrofitted shipping container. The concept closes the sustainability loop by sending leftover substrate back to campus gardens as compost — replacing landfill waste with local food production and experiential learning opportunities.
Two additional projects demonstrated digital innovation in waste management. Heavy Matters — recipient of the Rising Star Award — proposed an AI-enabled platform allowing residents to reclaim reusable household items before they reach landfill. The tool uses image uploads and hazard checks to reduce illegal dumping and strengthen community reuse networks.
Meanwhile, the People’s Choice Award went to Bingage, a gamified recycling app connected to smart bins. The system rewards students for proper sorting while generating real-time data to improve campus recycling performance.
Vice-Chancellor Professor Alex Zelinsky AO praised the creativity and impact of the winners, noting that the initiative demonstrates how universities can act as catalysts for circular innovation.
Australia produces more than 75 million tonnes of waste each year, underscoring the need for scalable, collaborative solutions. Programs like the Grand Challenge not only advance research but also empower future leaders to address global waste and resource challenges with practical, business-ready ideas.
