Continuous solvent production by Clostridium beijerinckii BA101 immobilized by adsorption onto brick |
| |
Authors: | Qureshi N. Schripsema J. Lienhardt J. Blaschek H.P. |
| |
Affiliation: | (1) Department of Food Science & Human Nutrition, Biotechnology & Bioengineering Group, University of Illinois, Urbana, IL 61801, USA |
| |
Abstract: | The performance of a continuous bioreactor containing Clostridium beijerinckii BA101 adsorbed onto clay brick was examined for the fermentation of acetone, butanol, and ethanol (ABE). Dilution rates from 0.3 to 2.5 h–1 were investigated with the highest solvent productivity of 15.8 g l–1 h–1 being obtained at 2.0 h–1. The solvent yield at this dilution rate was found to be 0.38 g g–1 and total solvent concentration was 7.9 g l–1. The solvent yield was maximum at 0.45 at a dilution rate of 0.3 h–1. The maximum solvent productivity obtained was found to be 2.5 times greater than most other immobilized continuous and cell recycle systems previously reported for ABE fermentation. A higher dilution rate (above 2.0 h–1) resulted in acid production rather than solvent production. This reactor was found to be stable for over 550 h. Scanning electron micrographs (SEM) demonstrated that a large amount of C. beijerinckii cells were adsorbed onto the brick support. |
| |
Keywords: | Acetone– butanol– ethanol (ABE) fermentation cell immobilization Clostridium beijerinckii BA101 continuous reactor |
本文献已被 SpringerLink 等数据库收录! |