Use of Zymomonas mobilis immobilized in doped calcium alginate threads for ethanol production
| Autor: | Akira Nordmeier, Dev Chidambaram |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Calcium alginate Materials science 020209 energy 02 engineering and technology Thread (computing) 01 natural sciences Zymomonas mobilis Industrial and Manufacturing Engineering chemistry.chemical_compound 010608 biotechnology 0202 electrical engineering electronic engineering information engineering Bioreactor Ethanol fuel Electrical and Electronic Engineering Porosity Civil and Structural Engineering Dopant biology Mechanical Engineering Continuous reactor technology industry and agriculture Building and Construction equipment and supplies biology.organism_classification Pollution General Energy chemistry Chemical engineering |
| Zdroj: | Energy. 165:603-609 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2018.09.137 |
| Popis: | Zymomonas mobilis immobilized in doped calcium alginate (Ca-alginate) threads was successfully employed for the production of ethanol in immobilized cell reactors operated with both vertical and horizontal flow. Polyethylene oxide (PEO) as a dopant for Ca-alginate threads was used to increase thread porosity. The influence of the direction of the flow into the reactor and the use of a dopant on the effectiveness of microbe immobilized Ca-alginate threads to produce ethanol was studied and results were compared to the widely used 2% Ca-alginate beads. Threads were able to obtain a similar ethanol yield to beads achieving 90.7% in vertical and 88% in horizontal flow reactors, while beads obtained 91% and 74.7%, respectively. The addition of PEO decreased the lag phase of the threads in both the horizontal and vertical flow reactors compared to a Ca-alginate standard over a 24 h period. The horizontal flow reactor's ethanol yield increased from 10.5% to 41.2% with the addition of PEO while the vertical flow reactor's ethanol yield increased from 15.5% to 69.6%. Additionally, doping with PEO lead to higher ethanol yield. This study demonstrates the use of threads for immobilization of microbes and the effectiveness of PEO as a dopant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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