University of Queensland researchers have explored the potential of converting invasive weeds into renewable bioenergy, focusing on biomass pellets as a solid fuel source.
The study evaluated 15 weed species west of Brisbane, identifying two vines—Brazilian Nightshade and Climbing Asparagus—as viable candidates for biomass pellet production.
Dr. Bruno de Almeida Moreira from UQ’s Queensland Alliance for Agriculture and Food Innovation led the research. “While the international pellet market traditionally relies on forest biomass, Australian regulations do not classify wood pellets as renewable,” Dr. Moreira explained. “We’re exploring alternative biomass sources to produce high-quality pellets. These weeds have a lignin content of about 25%, which is competitive with wood, and we can produce market-grade pellets, opening pathways for commercial biofuel production.”
The research, supported by a seed grant from the Australian Government’s Strategic University Reform Fund (SURF), was conducted in collaboration with Ipswich-based startup WorkEco.
Associate Professor Sudhir Yadav, co-author and AgriSustain lab leader, emphasized the environmental benefits. “This work aims to reduce the agricultural sector’s environmental footprint and enhance sustainability,” he said.
“The Australian Renewable Energy Agency projects bioenergy could meet 20% of energy demand by 2050—a challenging but achievable goal that requires further research.”
- Press release – University of Queensland
