Zeolites were formed from ancient volcanic ash flows settling in seas and lakes. This unique group of naturally-occurring minerals is often referred to as "molecular sieves". Zeolite is the world’s only mineral with a naturally-occurring negative charge. Zeolites simply lock & hold many positive ions, absorbing a multitude of environmental contaminants such as sodium, potassium; barium and calcium, and positively charged groups such as water and ammonia.
Zeolite and the Environment
Nearly every application of zeolite has been driven by environmental concerns, or plays a significant role in reducing toxic waste and energy consumption. It is the highly porous and consistent matrix of zeolite that provides the absorption qualities.
- U.S. Food and Drug Administration (FDA) Registration 17000178052
- Canadian Animal Feed registration No. 990643
- Swimming Pools & Spas-ANSI/NSF standard 50
- Drinking Water Treatment-ANSI/NSF standard 60
- Drinking Water-ANSI/NSF Standard 61
- GRAS (generally regarded as safe) under 21 CFR Part 182.2729, 40 CFR Part 180.1001
Zeolite in Industry
- United States Patent # 6,042,731, titled "Method of removing arsenic species from an aqueous medium using modified zeolite minerals" was issued on March 28, 2000.
- Union Carbide Corporation, Tarrytown, NY marketed an AW-500 product using zeolites for removing HCl from reformed H2 streams H2O from Cl2, and CO2 from stack gas emissions.
- NRG Corporation (Los Angeles, CA;) used a pressure-swing adsorption process with zeolite to remove polar H2O, H2S, and CO2 from low-BTU natural gas and developed a zeolite-adsorption process for purifying methane produced by decaying garbage in a Los Angeles landfill.
Why do we use multiple zeolites and multiple minerals? Because each absorbs different gases and absorbs them at different rates.
Excerpted from… Sabeha Kesraoui Ouki, Department of Civil Engineering, University of Surrey, Surrey U.K.
“… natural zeolites have been evaluated with respect to their selectivity and removal performance for the treatment of effluents… (and) exhibited different selectivity profiles…
Simply put, using multiple minerals yields far better results than any one mineral can.