Zeotech (ASX:ZEO) has successfully completed a methane control program in partnership with Cleanaway Waste Management and Griffith University. The program focused on developing a zeolite-based biofilter capable of eliminating methane emissions through both chemical and biological oxidation. According to Dr. John Vogrin, Head of Projects at Zeotech, this process has the potential to mitigate a greenhouse gas with 28 times the global warming potential of carbon dioxide. The research and development initiative, spanning two years, culminated in a year of optimization and monitoring.
The biofilters demonstrated high oxidation rates and minimal maintenance requirements, suggesting a cost-effective solution for mitigating landfill methane emissions. Dr. Chris Pratt from Griffith University’s Australian Rivers Institute reported over 90% median methane elimination from the leading zeolite biofilter, even under extreme weather conditions during the trial period. These pilot-scale configurations mirrored intermediate-sized landfills, increasing confidence in replicating these results in operational settings. Zeotech intends to leverage its kaolin resources to produce materials for greenhouse gas mitigation, including zeolites for fugitive methane control.
