Author:Jele, TB; Sithole, Bishop B; Lekha, Prabashni; Andrew, Jerome EDate:May 2022In this study, three different pulp and paper mill sludge (PPMS) samples collected from different South African mills were chemically and physically characterised to investigate their suitability for various beneficiation pathways. The overall ...Read more
Author:Andrew, JE; Grzeskowiak, V; Kerr, IDate:Oct 2009Hexenuronic acid (HexA) is formed during kraft pulping by the conversion of 4-O-methyl-glucuronic acid groups in strong alkali conditions. HexA can be removed from the pulp by including an acid hydrolysis (A) stage in the bleaching sequence. ...Read more
Author:Ramnath, L; Sithole, Bishop B; Govinden, RDate:Sep 2017This study highlights the importance of determining substrate specificity at variable experimental conditions. Lipases and esterases were isolated from microorganisms cultivated from Eucalyptus wood species and then concentrated (cellulases ...Read more
Author:Gush, Mark B; James, BDate:Jan 2011South Africa is very reliant on its plantations of introduced tree species to meet its pulp and timber needs, and the benefits of this industry in terms of production, income generation and job provision are undisputed. The downside is that ...Read more
Author:Sithole, Bishop B; Azeez, AM; Ramjugernath, DDate:Nov 2013A novel method has been developed for determining soluble and insoluble forms of oxalate in pulp and paper samples by ion chromatography. Methanesulphonic acid is used to dissolve insoluble oxalate, and total oxalate is then determined by ion ...Read more
Author:Namane, M; Sithole, Bishop B; Ramjugernath, DDate:Oct 2013Worldwide, the pulp and paper industry is in decline due to a number of factors such as high production costs, the growing utilization of electronic media that compete with print media and books, as well as pressure for the industry to be ...Read more
Author:Andrew, J; Hanuman, A; Sithole, Bishop BDate:2011The objective of this study was to demonstrate the applicability of the new methods by undertaking stickies audits in a newsprint and a packaging mill to test the sensitivity of the methods to detect changes in the concentration of stickies ...Read more