Author
Listed:
- Wachter Igor
(Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovak Republic)
- Štefko Tomáš
(Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovak Republic)
- Rolinec Marek
(Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Integrated Safety, Ulica Jána Bottu 2781/25, 917 24Trnava, Slovak Republic)
Abstract
The aim of the research described in this article was to optimize the basic sulphur process of lignin removal from the raw radially cut basswood (Tilia Cordata) pieces of various thicknesses. Lignin removal took place chemically in several consecutive steps in which the influence of individual parameters was investigated (solutions of NaOH + Na2SO3, KOH + Na2SO3, its concentrations, time of leaching, efficacy of whitening agents, effect of sample washing between individual baths, etc.). Through experiments, it was found that the change of fresh NaOH + Na2SO3 solution during the experiment had no significant effect. In contrast, skipping the washing of the samples with boiling distilled water after the hydroxide bath had a significant effect on the rate and efficiency of lignin removal with H2O2 in the following step. When comparing the lignin removal efficiency of NaOH + Na2SO3 and KOH + Na2SO3, the delignification process was clearly demonstrated to be more effective using the KOH + Na2SO3 solution. Application of the above-mentioned procedures has helped to streamline the lignin removal process from solid basswood.
Suggested Citation
Wachter Igor & Štefko Tomáš & Rolinec Marek, 2019.
"Optimization of Two-Step Alkali Process of Lignin Removal from Basswood,"
Research Papers Faculty of Materials Science and Technology Slovak University of Technology, Sciendo, vol. 27(44), pages 153-161, June.
Handle:
RePEc:vrs:repfms:v:27:y:2019:i:44:p:153-161:n:16
DOI: 10.2478/rput-2019-0016
Download full text from publisher
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:vrs:repfms:v:27:y:2019:i:44:p:153-161:n:16. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Peter Golla (email available below). General contact details of provider: https://www.sciendo.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.