Products that help enrich the environment include ammonium sulfate and anhydrous ammonia which are fertilizers that supply valuable nitrogen and sulfur nutrients for agricultural crops.
Other valuable products include phenol for the production of resins in the plywood industry, cresylic acid for the chemical industry, liquid nitrogen for refrigeration and oil field services, methanol for solvents, naphtha for gasoline blend stocks, and krypton and xenon gases for the nation's lighting industry
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Products revenue gains
Gasification coproducts such as anhydrous ammonia fertilizers, ammonium sulfate fertilizer, rare gases used in the lighting industry, phenols used in the plywood industry and cresylic acid used for wire coatings, and antioxidants and pesticides have become increasingly valuable to Dakota Gas' bottom line.
The revenue generated by coproduct sales has increased from five percent in the early years to almost 44 percent of the revenue stream in 2008 due to higher price-per-ton for ammonia and ammonium sulfate.