Vries, Allard, A.G. de (2020) 5-HMF production by enzymatic hydrolysis of biomass and heterogeneous catalysis with a Nb2O5 catalyst. Master's Thesis / Essay, Chemical Engineering.
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Abstract
The Cellic CTec2 enzyme is able to do enzymatic hydrolysis on canal grasses and rice straw in atmospheric conditions, under supercritical CO2 conditions as well as after being treated in supercritical CO2 conditions. The maximum yield for canal grasses was reached in atmospheric enzymatic conditions, while the maximum yield for rice straw was reached in supercritical CO2 conditions. The maximum yields were 85% of both glucose and xylose from rice, 75% and 65% of the glucose and xylose in grasses. For regular enzymatic hydrolysis in atmospheric conditions, a buffer solution with pH = 5.0 seems to be a better solvent than water, while for supercritical enzymatic hydrolysis water seems to the better solvent. Enzymatic hydrolysis in supercritical co2 conditions, was not effective for the canal grasses. It was however effective for rice, 50% to 85% for both glucose and xylose could be removed from the pellet. The reasoning for the difference in the effectivity could be the difference of structure between the two types of biomass or the negative effect that the supercritical CO2 has on the lignocellulosic structure of the grass.
| Item Type: | Thesis (Master's Thesis / Essay) |
|---|---|
| Supervisor name: | Jurak, E. and Pescarmona, P.P. |
| Degree programme: | Chemical Engineering |
| Thesis type: | Master's Thesis / Essay |
| Language: | English |
| Date Deposited: | 05 Jan 2021 12:03 |
| Last Modified: | 05 Jan 2021 12:03 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/23771 |
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