Bleeker, Pien (2022) Chemical extraction from beech wood, douglas fir and pine using acid, base extractions to obtain the purest cellulose to improve radiocarbon dating. Bachelor's Thesis, Chemical Engineering.
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Final report - Pien Bleeker - 2022 - Bachelor .pdf Download (298kB) | Preview |
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Abstract
Three kinds of woods, beech wood, douglas fir and pine were selected to investigate which protocol yields the purest cellulose to increase the effectiveness of radiocarbon dating. The basic protocol consists of an acid, base, acid extraction and a chlorite oxidation step to remove the lignin and hemicellulose from the wood. To eventually obtain pure cellulose, but so far insufficient cellulose purity was obtained for this protocol. Therefore, other protocols had been conceived starting from the basic protocol by adding two different organic washes to remove the resin of wood or by adding an alkali extraction to remove more hemicellulose and lignin by breaking more linkages. After every protocol, complete acid hydrolysis was performed to hydrolyse the carbohydrates into monosaccharides, which were analysed by high performance anion-exchange chromatography with pulsed amperometric detection.
| Item Type: | Thesis (Bachelor's Thesis) |
|---|---|
| Supervisor name: | Jurak, E. and Hameleers, L. |
| Degree programme: | Chemical Engineering |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 20 Dec 2022 15:08 |
| Last Modified: | 20 Dec 2022 15:08 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/29054 |
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