Ethanol production by immobilized whole cells ofZymomonas mobilis in a continuous flow expanded bed bioreactor and a continuous flow stirred tank bioreactor |
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Authors: | S Siva Kesava Dr T Panda |
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Institution: | (1) Biotechnology Research Centre, Indian Institute of Technology, 600 036 Madras, India |
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Abstract: | Continuous ethanol fermentation by immobilized whole cells ofZymomonas mobilis was investigated in an expanded bed bioreactor and in a continuous stirred tank reactor at glucose concentrations of 100, 150 and 200 g L–1. The effect of different dilution rates on ethanol production by immobilized whole cells ofZymomonas mobilis was studied in both reactors. The maximum ethanol productivity attained was 21 g L–1 h–1 at a dilution rate of 0.36 h–1 with 150 g glucose L–1 in the continuous expanded bed bioreactor. The conversion of glucose to ethanol was independent of the glucose concentration in both reactors. |
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Keywords: | continuous flow reactor ethanol expanded bed reactor immobilization Zymomonas mobilis |
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