General Information
    • ISSN: 2010-0221
    • Frequency: Bimonthly
    • DOI: 10.18178/IJCEA
    • Editor-in-Chief: Dr. Eldin W. C. Lim
    • Executive Editor: Mr. Ron C. Wu
    • Abstracting/ Indexing: Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, CABI, DOAJ, Electronic Journals Library, Google Scholar, Engineering & Technology Digital Library, ProQuest, and Crossref
    • E-mail: ijcea@ejournal.net
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Editor-in-chief
Dr. Eldin W. C. Lim
Dept. of Chemical and Biomolecular Engineering,
National University of Singapore, Singapore
IJCEA 2010 Vol.1(2): 147-150 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2010.V1.25

Countercurrent Extraction of 2, 3-Butanediol

Dr. Sadhana Vishwakarma

Abstract—Biotechnological production of 2,3-butanediol ( BD), a value added chemical   from wastes and excessive biomass is a promising and attractive alternative for traditional chemical synthesis. A BD concentration of 0.61% has been achieved form 2.35% lactose utilized after 96 hrs. of incubation period using deproteinated whey as substrate.  This corresponds to BD production of 0.259 g/g lactose utilized.  Adding of 50 mM acetate increases BD production to  0.84%  from 2.3% lactose utilized corresponding to a yield of 0.365g/g lactose utilized. At solvent to feed ratio of 5:1 an overall mass transfer coefficient of 0.1554 x10-3  sec-1 and extraction of 84.47 %  was achieved with glucose fermentation broth. When concentrated DPW  broth was used for continuous countercurrent extraction higher Kda of 0.239 x10-3  sec-1 and extraction of 94 % and equilibrium stages of 1.346 was achieved.

Index Terms—2,3-Butanediol, butylene glycol, K.oxytoca, deproteinated whey, whey permeate, solvent extraction,  countercurrent extraction.

 

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Cite:   Dr.   Sadhana   Vishwakarma,  "Countercurrent  Extraction  of  2,3-Butanediol,"  International Journal of
Chemical Engineering and Applications
vol. 1, no. 2, pp. 147-150, 2010.

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