The Microrecycling Hub is a five-year national program of cutting-edge research to develop innovative technologies to recover the valuable materials contained in Australia’s battery and other complex wastes not currently subject to conventional or widespread recycling.

The Hub, hosted by the UNSW Sustainable Materials Research and Technology (SMaRT) Centre, is a collaboration with numerous industry partners and researchers from six other universities around Australia: University of Technology, Sydney; University of Sydney; Monash University; University of Wollongong; Queensland University of Technology; and Deakin University.

The Australian Research Council (ARC) Chief Executive Officer (CEO) Ms Judi Zielke PSM said that with more than a quarter of the 76 million tonnes of solid waste Australia generates each year going to landfill, the innovative work of the Microrecycling Research Hub is critical in identifying new ways to recycle waste and helping us move towards a circular economy.

“The Hub’s vision of translating science into real world environmental and economic benefits is at the heart of the ARC’s purpose to harness expertise to support the advancement of knowledge and innovation for the benefit of Australia,” said Ms Zielke.

UNSW Vice-Chancellor and President Professor Attila Brungs said the Microrecycling Hub aims to boost resource recovery capability by creating new advanced and scalable manufacturing technologies, based on SMaRT’s MICROfactorieTM concept.

“It is vital that we recover and reuse materials from complex batteries and other consumer wastes in manufacturing as we strive to decarbonise and build the electrification infrastructure needed for our renewable energy supplies.”

It is estimated that 18,600 tonnes of batteries – all of which are hazardous to some degrees – are discarded to landfill in Australia annually. Yet batteries are essential as the world transitions to renewable energy and Australia aims to achieve net zero emissions by 2050.

The federal National Battery Strategy released in February 2023 found that battery firming capacity is needed for the National Electricity Market to increase its use of renewables to 82 per cent by 2030. It says demand for batteries is forecast to accelerate by as much as tenfold over the next decade, which is more than solar photovoltaics grew over the past decade.

Prof. Sahajwalla said the Hub is developing microrecycling science to develop innovative solutions to obtain from waste batteries and consumer waste the valuable materials they contain so that the Hub’s end user partners can use these materials for different applications.

“The science of microrecycling, in collaboration with industry partners, will lead to the creation of new pathways so waste materials can go from being low value to high value materials which can be used in manufacturing,” she said. “We are transforming those materials via thermal and other processes into high value materials and products via the advanced manufacturing techniques being developed in the Hub.”

“The broader impact of the Hub will go beyond scientifically developed recycling solutions. Climate change and clean energy narratives often overlook the need for more sustainable manufacturing and waste management practices where we start to use waste resources for future manufacturing supply chains.”

ARC Hub Launch

Caption: (from left) UNSW Deputy Vice Chancellor, Research and Enterprise, Prof Nicholas (Nick) Fisk; SMaRT Director and Hub Director, Prof Veena Sahajwalla; ARC CEO Judi Zielke; Hub industry partner, Mattress Recycle Australia CEO and Founder, Andrew Douglas; Hub industry partner, Molycop Vice President Global Sustainability, Ian Tooze; Hub industry partner, Renew IT CEO and Founder, James Lancaster; UNSW Vice Chancellor and President Attila Brungs.

UNSW Deputy Vice Chancellor, Research and Enterprise, Professor Nicholas Fisk said while this $3.3 million Hub builds on previous waste and recycling breakthroughs developed by SMaRT, it is now forging new processes in partnership with committed industry partners so that technologies developed are commercially fit for purpose.

“UNSW has a strong track record of translating scientific discoveries into real-world application in collaboration with industry and government partners. The Microrecycling Hub focusses on recovering valuable materials from spent batteries and other wastes to create national materials sustainability and sovereign capability and accelerate efforts to reduce emissions and decarbonise.”

While the Hub was begun during COVID lockdown periods, it is now being launched as significant progress is being made on its research and development program, with a total of 13 scientific papers published in leading journals so far, 8 of which were published in 2022 alone (see list below).

Listen to Veena interviewed on ABC by Sarah Macdonald (listen from 40:10)

ARC announcement

UNSW announcement

These papers are building a knowledge base for the goal of using wastes as a sustainable resource for future manufacturing needs.

  • R. Kh. Nekouei, S. S. Mofarah, S. Maroufi, I. Tudela, V. Sahajwalla, “Determination of the optimum potential window for super- and pseudocapacitance electrodes via in-depth electrochemical impedance spectroscopy analysis”, Journal of Energy Storage, 2022, 56, 106137. [IF: 8.9]
  • R. Kh. Nekouei, S. S. Mofarah, R. Hossain, S. Maroufi, V. Sahajwalla, “Roles of experimental variables in optimised fabrication of microrecycled CuO-based photoelectrodes,” Materials Today Sustainability, 2022, 18, 100111. [IF: 7.2]
  • S. Maroufi, S. S. Mofarah, R. Kh. Nekouei, V. Sahajwalla, “Tailoring of highly-stable Mn1-x-y(CexLay)O2-δ pseudocapacitor thin-film and rare earth oxide nanospheres through selective purification of rare earth oxides derived from Ni-MH batteries,” Green Chemistry, 2022, 24, 1659-1672. [IF: 11.0]
  • M. Assefi, S. S. Mofarah, S. Maroufi, R. Kh. Nekouei, W. Wang, E. Kert, V. Sahajwalla, “Regeneration of hydrogen through thermal micronisation of end-of-life polymers for sustainable reduction of iron oxide,” Fuel Processing Technology, 2022, 226, 107038. [IF:8.1]
  • R. Kh. Nekouei, S. S. Mofarah, S. Maroufi, W. Wang, I. Mansuri, V. Sahajwalla, “Unraveling the Role of Oxides in Electrochemical Performance of Activated Carbons for High Voltage Symmetric Electric Double-Layer Capacitors,” Advanced Energy and Sustainability Research, 2022, 3, 2100130. [IF:pending]
  • Hassan, K., Hossain, R., & Sahajwalla, V. (2022). Recycled ZnO-fused macroporous 3D graphene oxide aerogel composites for high-performance asymmetric supercapacitors. Journal of the American Ceramic Society, 105(12), 7467-7478.
  • Hossain, R., Nekouei, R. K., Al Mahmood, A., & Sahajwalla, V. (2022). Value-added fabrication of NiO-doped CuO nanoflakes from waste flexible printed circuit board for advanced photocatalytic application. Scientific Reports, 12(1).
  • Hossain, R., & Sahajwalla, V. (2022). Microrecycled Co3O4 from waste lithium-ion battery: Synthesis, characterisation and implication in environmental application. Journal of Environmental Chemical Engineering, 10(3).

Media contact: For further information about the Microrecycling Hub, SMaRT and Prof. Sahajwalla, contact Stuart Snell or 0416 650 906.