Worldwide industrial solutions company Harsco and bioenergy technologies firm LanzaTech have teamed up to promote the capture and reuse of steel mill flue gases as a source for domestic fuel.

Founded in 2005 in New Zealand, LanzaTech was the first company to successfully demonstrate production of fuel-grade ethanol from steel mill flue gases. Its proprietary gas fermentation technology converts the carbon monoxide-containing waste gases into "low-cost" ethanol, significantly reducing greenhouse gas emissions while providing an alternative to traditional corn-based ethanol.

The tie-up with Harsco is intended to accelerate the introduction of this technology across the steelmaking industry. LanzaTech says it's already working with customers throughout the Americas, Europe and in select emerging markets. Here's the kicker: LanzaTech estimates that, on the worldwide level, steel mill waste gases could convert to 30 billion gallons of ethanol a year.

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