Abstract
Alkaline carboxylate road deicers such as calcium magnesium acetate are beginning to replace conventional chloride-containing deicers since they are less damaging to concrete, metal surfaces and living systems. The purpose of this project was to develop economical methods for the recovery of these superior road deicers from aqueous biomass pyrolysis liquors. Calcium formate/acetate/propionate deicers were successfully prepared in high yield from aqueous pyrolysis liquors derived from wood. These deicers are expected to be superior to calcium magnesium acetate deicers due to their high formate content. Deicer recovery should become commercially viable if the recovery of high-value industrial chemicals such as hydroxyacetaldehyde or glyoxal can be integrated with deicer recovery. Although technically straightforward, deicer production without by-product chemical recovery is uneconomical. Total pyrolysis liquor, derived from cellulose-rich biomass waste is a good source of deicer and other chemicals.
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