Most waste still ends up in landfill, but researchers and startup founders are developing new ways to turn discarded materials into useful products. In Australia, scientist Lynne Loo is helping businesses transform food waste and biomass into paper, leather, biochar, vinegar and oil.
The work highlights how the circular economy could reduce pressure on landfill sites while creating new commercial opportunities. Instead of treating waste as an endpoint, these projects explore how discarded materials can become inputs for manufacturing, agriculture and renewable-energy systems.
From waste research to circular-economy innovation
Loo began exploring waste recovery around a decade ago while researching how material from Australia’s abalone industry could be repurposed. Her work has since expanded into supporting startup businesses that are developing products from materials that would otherwise be thrown away.
The scale of the challenge is substantial. Australia produces 76 million tonnes of waste each year, according to the country’s Department of Climate Change, Energy, the Environment and Water. A significant amount is sent directly to landfill, creating environmental pressures and wasting materials that may still have economic value.
Loo’s role includes connecting emerging businesses with suitable waste streams and potential markets. That support can be particularly important for small companies, which may have a promising technology but limited experience sourcing materials or finding customers.
Food waste becomes cellulose for paper and leather
One project supported by Loo is led by Matt Barber, who is extracting cellulose from food waste in a small laboratory. Cellulose is a structural material found in plants, and it can be used as a foundation for a range of products.
Barber says the recovered cellulose can be processed into:
- Paper products
- Leather alternatives
- Wood-like materials
- Bioplastics
The approach could provide an alternative to sourcing every raw material from newly grown plants or trees. Barber describes the process as a way to produce a usable material much faster than waiting for timber crops to mature.
However, turning a laboratory process into a viable business involves more than developing the material itself. Startups must secure consistent supplies of suitable waste, meet product standards and identify buyers. That is where waste brokers and commercial networks can help bridge the gap between research and manufacturing.
Thermal conversion produces vinegar, biochar and oil
A separate operation in Collie, Western Australia, is using thermal conversion technology to process biomass and municipal waste. Renergi says its facility can handle just under 30,000 tonnes of biomass waste annually, alongside approximately 4,000 tonnes of municipal waste from the town each year.
Thermal conversion uses heat to break down organic material and produce new outputs. At the Collie facility, those outputs include vinegar, biochar and oil. The company says more than 70% of the material is recovered and converted into new products.
Biochar has already been used on fruit farms and at a winery in south-western Western Australia. When appropriately produced and applied, biochar can be used as a soil amendment, although its performance depends on the feedstock, processing method and local agricultural conditions.
The project has received support from the Australian Renewable Energy Agency, which is backing efforts to expand renewable technologies in regional areas. Renergi expects the facility to become one of Australia’s largest producers when it reaches full production.
Why waste recovery matters
Waste-to-product projects do not eliminate the need for waste reduction, reuse or conventional recycling. They are part of a broader hierarchy in which preventing waste and extending product lifespans generally come before processing materials that have already been discarded.
Still, advanced recovery technologies may help deal with waste that is difficult to recycle through standard systems. Their potential benefits include:
- Reducing the volume of material sent to landfill
- Creating alternatives to some virgin raw materials
- Supporting regional industries and employment
- Producing agricultural inputs such as biochar
- Encouraging investment in sustainable technology
There are also challenges. Facilities need reliable waste supplies, sufficient energy, strong environmental controls and markets for the resulting products. The commercial success of each process depends on whether the recovered material can compete with conventional alternatives in price, quality and performance.
Australia’s projects offer a wider lesson
The work illustrates a central idea of the circular economy: waste can be treated as a resource rather than simply a disposal problem. Food by-products, biomass and municipal waste may contain materials that can be recovered, refined and sold into new supply chains.
For Europe and other regions seeking to cut landfill use, the Australian examples offer possible avenues for innovation, particularly in agriculture, packaging, construction materials and renewable-energy systems. They also show why cooperation between scientists, entrepreneurs, waste operators and public funding bodies is important.
These technologies are not a substitute for reducing unnecessary consumption, but they can help recover value from material that has already entered the waste stream. The next step is proving that such systems can operate reliably and economically at a larger scale.
Conclusion
Australia’s waste-recovery projects show how food waste and biomass can be transformed into paper, leather alternatives, vinegar, biochar and oil instead of being sent straight to landfill. The broader lesson is clear: successful circular-economy innovation requires not only inventive science, but also dependable waste collection, commercial partnerships and investment in sustainable technology.
