Lextran's patented technology can utilize a variety of reagents in order to capture the SOx and NOx. The use of ammonia as a reagent results in the production of ammonium sulfate, a whole-water commercial-grade fertilizer, purified by crystallization.

Containing Nitrogen as ammonium cations and Sulfur as Sulfate anions, Ammonium Sulfate is used largely as a Nitrogen fertilizer. In the soil, the Ammonium is transformed by soil bacteria into nitrate anion form. It can, then, be absorbed into the soil cations exchange complex or taken-up directly as ammonium ions by growing plants.

Sulfate anions are usually combined with calcium cations in the soil, forming a slowly soluble source of calcium and sulfate ions needed in order to maintain soil structure and supply calcium and sulfate to the growing vegetation.

There are other byproducts possible if the basic reagent “ammonium” is replaced with another basic reagent like Potassium Hydroxide (KOH) to produce potassium sulfate (K2SO4) as a byproduct. Potassium Sulfate has been in use as fertilizer for many years. Both potassium and sulfate ions that compose this fertilizer are essential for plants’ growth and are preferred in saline soils, and for crops that Chloride ion can impede their quality like tobacco and sugar beet.

Power plants, as well as other industrial installations burning coal and/or heavy fuels, are a significant source of major polluting and toxic emissions: sulfur oxides (SOx) and nitrogen oxides (NOx).

Numerous technologies exist to reduce the emissions of these pollutants, first and foremost to meet government emission regulations, and to cooperate with the conservation movement of globe protection. However, the economics and operational complexity of the prevailing technologies make them less amenable for simple and affordable implementations.

Lextran’s multiple pollutants removal technology enables the absorption of the following pollutants from flue gases in one single pass:

  • Sulfur oxides (SOx) - removal of 99%, unconditional of inlet concentration.
  • Nitrogen oxides (NOx) - removal of up to 85% - 95% of inlet concentration.

The absorption is realized by reacting the said pollutants with Lextran catalyst in wet scrubber environment process. The Lextran catalyst is an organic substance in an emulsion form.

The Lextran catalyst, produced by a proprietary know how process, contains an active sulfur-oxygen functional group, having catalytic properties which enhance the oxidation reactions of SOx and NOx into SO4 and NO3 anions.

After facilitating the initial oxidation, the Lextran catalyst is released and recycled back into the process leaving the pollutants in chemical form amenable to become commercially beneficial by-products (Fertilizers) with a further neutralization by ammonia, KOH, or other basic reagents to control the type of byproduct.

The possible byproducts are therefore mainly, ammonium nitrate, ammonium sulfate, potassium sulfate, potassium nitrate, and others.