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Applied Biochemistry and Biotechnology

, Volume 131, Issue 1–3, pp 645–658 | Cite as

The development of cement and concrete additive

Based on xylonic acid derived via bioconversion of xylose
  • Byon-Wa Chun
  • Benita Dair
  • Patrick J. Macuch
  • Debbie Wiebe
  • Charloote Porteneuve
  • Ara Jeknavorian
Session 4 Industrial Biobased Products

Abstract

The present work attempted to utilize xylose by converting it to an aldonic acid. In the present study, xylose was converted to xyloni acid by using commercial glucose oxidase enzyme, palladium catalysis, and microbial bioconversion. The enzyme conversion was successfully done using a commercial glucose oxidase. The microbial conversion with Gluconobactor oxydans proceeded even with the presence of a large amount of lignosulfonate. Thus obtained xylonic acid products were evaluated as a cement dispersing agent in cement and concrete tests. It was found that xylonic acid is approximately twice as effective as lignosulfonate. Xylonic acid can be effectively utilized in concrete water reducer application.

Index Entries

Xylose utilization biochemical oxidation xylonic acid cement concrete 

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Copyright information

© Hamana Press Inc. 2006

Authors and Affiliations

  • Byon-Wa Chun
    • 1
  • Benita Dair
    • 1
  • Patrick J. Macuch
    • 2
  • Debbie Wiebe
    • 2
  • Charloote Porteneuve
    • 1
  • Ara Jeknavorian
    • 1
  1. 1.Grace Performance ChemicalsW.R. Grace & Co.Cambridge
  2. 2.Altran CorporationBoston

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