Journal
BIOTECHNOLOGY AND BIOPROCESS ENGINEERING
Volume 18, Issue 2, Pages 223-233Publisher
KOREAN SOC BIOTECHNOLOGY & BIOENGINEERING
DOI: 10.1007/s12257-012-0549-5
Keywords
acetone-butanol-ethanol (ABE); breakthrough curve; fixed-bed column; models; resin; sorption
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Funding
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1066]
- National Outstanding Youth Foundation of China [21025625]
- National High-Tech Research and Development Plan of China (863 Program) [2010AA101502]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- average college graduate student research innovative projects of Jiangsu province [CXZZ11_0362]
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Removal of biobutanol from acetone-butanolethanol (ABE) fermentation broth can be achieved by fixed-bed sorption by means of KA-I resin, and the relevant breakthrough curves would provide much valuable information to help design a continuous fixed-bed sorption process in field application. In the present study, the effects of several important design parameters, i.e., initial butanol concentration (C (f): 3.0 similar to 30.0 g/L), inlet flow rate (Q (f): 0.5 similar to 5.5 mL/min) and adsorbent bed height (Z: 4.2 similar to 18.0 cm), on the adsorption breakthrough curves of KA-I resin in a fixed-bed column were investigated. It was found that the amount of adsorbed butanol at breakthrough point was increased with an increase in the value of C (f) and Z; and with decrease in the value of Q (f). However, the maximum sorption capacities of butanol at saturated point were basically unchanged. Three well-established fixed-bed adsorption models, namely Thomas, Yoon-Nelson and Adams-Bohart, were applied to predict the breakthrough curves and to determine the characteristic parameters of fixed-bed column, which are the basis for the process design at a real scale. Good agreement between the theoretical breakthrough curves and the experimental result were observed using Thomas and Yoon-Nelson models.
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