• Zeotech files patent application in Australia related to carbon sequestration in soils using its products
  • Brisbane in-house lab produces over 500kg of zeolite product year to date, with current scaled up production at 35kg a week
  • Methane emissions control program with Griffith University continues to progress positively and is on schedule for completion in June 2024


Zeotech is forging ahead with its plan to be Australia’s first producer of manufactured zeolite, an advanced material with a range of uses in greenhouse gas mitigation, agriculture, animal supplements, and environmental remediation … just to name a few.



The company is working to become Australia’s first producer of manufactured zeolites – commonly known as molecular sieves – with its novel and proprietary mineral processing technology.

Zeolites are porous mineral frameworks, naturally occurring or manufactured, composed mainly of aluminium, silicon, and oxygen.

Their three-dimensional structures can trap, exchange, or release ions and molecules, enabling zeolites to find applications in diverse industrial and environmental contexts. Examples include:

  • Catalysis – used as catalysts to speed up chemical reactions
  • Ion exchange – employed in water softeners to remove calcium and magnesium ions
  • Gas separation – selectively adsorb gases in separation processes
  • Adsorption – capture substances like odours, pollutants, and radioactive ions
  • Agriculture – Improve soil carbon, water retention and nutrient capacity
  • Animal Supplements – Reduce the risk of milk fever in cows
  • Environmental remediation – remove pollutants from wastewater

In its latest quarterly activities update  Zeotech (ASX:ZEO)  says it continues to manage its IP utilising a combination of patents and trade-secret procedures.

In August 2023, ZEO has filed a patent application in Australia titled Method and Use of Zeolites related to carbon sequestration in soils using its products.

The patent application aims to safeguard and enhance potential commercial opportunities resulting from the addition of ZEO’s manufactured zeolite products to soil, and involves the novel and inventive mechanisms these have by improving and protecting soil carbon.

The patent follows ongoing work under the soil carbon stream of ZEO’s agri-soil product development program with Griffith University and will further enhance the datasets created for attracting a fertiliser industry partner.

ZEO says it will further build its IP portfolio, while also pursuing the appropriate protection that best leverages commercial prospects of technology it is advancing.


Producing zeolites from coal combustion product (fly ash) and lithium process by-product (leached spodumene)

During the quarter, ZEO also lodged two new patent applications utilising novel processes developed by Zeotech’s Head of Research & Development, Dr. John Vogrin, for the synthesis of low-cost zeolites from coal fly ash and lithium process by-product.

This tech offers a sustainable commercial remediation solution for coal combustion materials and the by-products created from lithium refining industry, converting by-products into valuable advanced materials.


Scaling up production

Over the past 10-month ZEO’s Brisbane in-house lab has produced over 500kg of zeolite materials from various feedstocks and is consistently operating at 35kg per week production.

ZEO says the inventories will meet demand for zeolite in the company’s large-scale research related to agri-soil product development and methane emissions control technology.

The company has introduced coal fly ash zeolite to its Griffith University methane emission control project, anticipating this new by-product feedstock would open up future remediation opportunities.


Methane control program on schedule

ZEO says its methane emissions control program with Griffith University continues to progress on schedule for completion in June 2024.

The program aims to develop zeolite-based technology to be deployed within the surface capping soil of landfills to adsorb and eliminate methane emissions.


Metakaolin for greener cement

During the quarter ZEO provided samples of its Toondoon kaolin clay to two Queensland cement producers to assess its potential as a metakaolin (calcined clay) supplementary cementitious material (SCM).

Using calcined clays as SCMs can significantly reduce the cement industry’s carbon footprint.

To further collaborate with the industry, ZEO partnered with Central Queensland University (CQU) to explore the suitability of Toondoon and Abercorn kaolin clays across various grades, aiming to optimise their pozzolanic activation for maximum commercial value as efficient SCMs.

ZEO’s partnership with CQU began in September 2023, with sample deliveries after the quarter’s end with the program expected to run for about five months.


Direct Shipping Ore (DSO)

During the quarter, ZEO engaged Conrad Partners, a Hong Kong-based commodity marketing agency, to promote its high-quality DSO kaolin product, with a focus on large Asian markets.

ZEO has provided ~40 kgs of kaolin product samples to Conrad’s in China to support early marketing and engagement with prospective offtake partners.


‘Excellent progress’

CEO Scott Burkhart says ZEO has made excellent progress on several promising initiatives, including the new soil carbon patent application.

“The in-house lab team have also maintained consistent production of the company’s low-cost, manufactured zeolites,” Burkhart says.

“Pleasingly, this has resulted in over 500kg of inventory produced during 2023, that will support demand from our exciting research programs at Griffith.

“Lastly, we continue to engage proactively with industry regarding a metakaolin product, which uses the company’s large-scale Queensland kaolin assets.”

He says this has included starting work alongside CQU to investigate the kaolin’s potential commercial value as a SCM for greener cement.


This article was developed in collaboration with Zeotech, a Stockhead advertiser at the time of publishing.

 This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.