The electro-oxidation of lignin in Sappi Saiccor dissolving pulp effluent.
Moodley, B, Brookes, HC and Mulholland, DA (2011) The electro-oxidation of lignin in Sappi Saiccor dissolving pulp effluent. Water SA, 37 (1).
![]() |
Text (licence)
licence.txt Download (1kB) |
|
![]()
|
Text
The_Electro-oxidation_of_Lignin_in_Sappi_Saiccor_Dissolving_Pulp_Mill_Effluent.pdf - Accepted version Manuscript Download (407kB) |
Abstract
Electro-oxidation reactions using a nickel anode were carried out on the calcium-spent liquor effluent obtained from Sappi Saiccor (formerly South African Industrial Cellulose Corporation) dissolving pulp mill as well as on lignin- and lignan-type compounds previously identified in the effluent. Voltammograms were obtained for each solution in order to identify the oxidation potentials of the compounds to be electro-oxidised. Value-added products such as vanillin and syringaldehyde were identified in the electro-oxidised reaction mixtures using gas chromatography-mass spectrometry (GC-MS) and high performance liquid chromatography (HPLC). Profiles of the changes in concentration of these compounds were determined as a function of time with maximum concentrations reached within the first half hour. These findings are significant in that few electro-oxidation reactions have been carried out on the effluent of a pulp mill which uses the acid bisulphite pulping process and no results have previously been reported on the electro-oxidation of syringaldehyde. This study contributes to a further understanding of the electro-oxidation of lignin and is of value to the paper and pulp industry at large. Reduction of the organic content of the effluent by electro-oxidation was shown to be possible.
Item Type: | Article | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Divisions : | Faculty of Engineering and Physical Sciences > Chemistry | ||||||||||||
Authors : |
|
||||||||||||
Date : | 1 January 2011 | ||||||||||||
Additional Information : | Posted with permission. | ||||||||||||
Depositing User : | Symplectic Elements | ||||||||||||
Date Deposited : | 19 Apr 2012 10:14 | ||||||||||||
Last Modified : | 31 Oct 2017 14:33 | ||||||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/7395 |
Actions (login required)
![]() |
View Item |
Downloads
Downloads per month over past year