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Title: PRODUCTION OF LOW-COST ACETATE DEICERS FROM BIOMASS AND INDUSTRIAL WASTES
Accession Number: 00745786
Record Type: Component
Availability: Find a library where document is available Abstract: Calcium magnesium acetate (CMA), a mixture of calcium acetate and magnesium acetate, is used as an environmentally benign roadway deicer. The present commercial CMA deicer made from glacial acetic acid and dolomitic lime or limestone is more expensive than salt and other deicers. Also, a liquid potassium acetate deicer is used to replace urea and glycol in airport runway deicing. Two alternative low-cost methods to produce these acetate deicers from cheap feedstocks, such as biomass and industrial wastes, were studied. CMA deicers produced from cheese whey by fermentation and extraction were tested for their acetate content and deicing property. The CMA solid sample obtained from extraction of the acetic acid present in a dilute aqueous solution and then back-extracted with dolomitic lime to form CMA had about the same acetate content (70% acetic acid or 90% CMA) as the commercial CMA deicer. The sample from dried whey fermentation broth contained 50% acetic acid or 63% CMA, with the remaining solids being other organics and salts present in whey. Deicing tests showed that CMA samples from fermentation and extraction had an ice penetration rate equal to or slightly better than the commercial CMA. Cost analysis showed that CMA can be produced at a product cost of $204 to $328/ton, less than 30% of the current market price for the commercial CMA, for a plant size of 8,400 tons CMA per year. The lower CMA cost should dramatically increase CMA use in the deicing market.
Supplemental Notes: Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 00745777
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Yang, S-TJin, ZChollar, B HPagination: p. 60-69
Publication Date: 1997
Conference:
Snow Removal and Ice Control Technology
Location:
Reno, Nevada ISBN: 0309062160
Media Type: Digital/other
Features: Figures
(3)
; References
(29)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Finance; Geotechnology; Highways; Maintenance and Preservation; Materials; Vehicles and Equipment; I35: Miscellaneous Materials; I62: Winter Maintenance
Files: TRIS, TRB
Created Date: Feb 24 1998 12:00AM
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