Studies undertaken by Sparc Technologies Limited (ASX: SPN) have identified that use of its graphene product improves absorption of PFAS contaminants by up to 100% compared to industry standard granulated activated carbon (GAC).
Managing Director, Tom Spurling,said the first round of testing on the ability of graphene-based materials to remediate water contaminated with poly-fluorinated alkyl substances (PFAS), also demonstrated a major improvement in the ability to remediate hazardous sites.
The testing included several PFAS compounds including perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA).
The results from this round of test work are very encouraging in that they confirm the use of our graphene enhanced adsorbent, developed with our strategic partner the University of Adelaide, performs at a significantly higher level than products that are currently commercially available,” Mr Spurling said.
“This enables us to move forward to the next stage and test the product in an industrial environment, as well as to scope the product’s economic viability.
“An exciting part of the next stage of our testing will involve an investigation as to whether our graphene membrane has the ability of effectively destroy PFAS as part of its application.”
Mr Spurling said that given the significant outperformance of Sparc’s laboratory results, the Company will now seek to conduct a follow up programme to determine the viability of Sparc’s product in addressing the significant issues surrounding contaminated sites and water present around the world.
An industry standard granulated activated carbon (GAC) product was used as the control sorbent. This GAC is a well-known and high-performing grade of GAC, often used for PFAS removal and is certified for use in municipal and drinking water systems expressly for this purpose.
Mr Spurling said the results of Sparc’s trials are very encouraging and will now be augmented by follow up testing that will focus on development of a viable graphene-based absorbent including:
PFAS is a group of man-made chemicals that have been available since the 1940s, which have been used historically in a variety of industries around the globe.
PFAS has become a major worldwide environmental issue, whereby soil and water, including ground and drinking water, become contaminated through the use of fire retardants and other industrial applications. PFAS remains highly persistent in the environment long after use and will accumulate in the human body for long periods of time.
As exposure continues, PFAS can cause significant health effects in humans and animals, including reproductive and developmental issues, liver and kidney and immunological problems. Studies have also shown PFAS can contribute to decreased infant birth weight, effects on the immune system, cancer and tumours and thyroid hormone disruption.