Zeolite Formulations from Fly Ash

University of the Western Cape
Overview of innovation

Fly ash is a waste by-product generated by coal-fired electricity power stations. Due to its environmental impact, there is a growing need for safe and sustainable methods of fly ash disposal. One effective approach is the beneficiation of fly ash through the production of zeolites—a class of microporous, aluminosilicate minerals with high commercial value.

The University of the Western Cape has developed innovative formulations that extract silica from coal fly ash, using it as a key feedstock to synthesize a variety of zeolites. These include ZSM-5, Beta, MCM, Zeolite A, Mordenite, and Sodalite.

UWC’s unique formulations are designed to use low-cost raw materials, require lower energy inputs, and enable shorter production times. These advantages position the process as a cost-effective solution for large-scale industrial application.

Zeolites produced through this method have a wide range of applications, including:

  • Catalysts in hydrocarbon processing and biodiesel production
  • Gas separation and purification
  • Adsorption and ion-exchange processes
  • Slow-release fertilisers in agriculture
Innovation Opportunity Type
Licensing
Industry
​Mining and quarrying
Other Manufacturing
Mining support service activities
​Manufacturing
Other manufacturing
Manufacture of chemicals and chemical products
​Electricity, gas, steam and air conditioning supply
Electricty, gas, steam, and air conditioning supply
Technology Readiness Level
TRL 5 – Prototype tested in a controlled environment
Brochures, business plans, prospectus or other documents
tech-brief-zeolite_v5_2024.pdf546.71 KB