Johakimu, Jonas KJerome, ASithole, Bishop BPrabashni, L2016-02-232016-02-232015-09Johakimu, J.K., Jerome, A., Sithole, B.B. and Prabashni, L. 2015. Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments. Wood Science and Technology, Vol. 50(2), pp. 365-3840043-7719http://link.springer.com/article/10.1007/s00226-015-0764-2/fulltext.htmlhttp://hdl.handle.net/10204/8420Copyright: 2015 Springer Verlag. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Wood Science and Technology, vol. 50(2), pp. 365-384An alternative way of fractionating lignocellulose biomass into its individual components, hemicelluloses, lignin and cellulose, was investigated. South African Eucalyptus grandis wood chips were fractionated using a combination of hot water and alkaline treatments with or without AQ. Initially, the biomass samples were treated in hot water to remove hemicelluloses. At optimum prefraction conditions, the data acquired revealed that almost 12 % of the E. grandis wood biomass could be recovered as hemicelluloses. When the hemicelluloses preextracted biomass was further treated using sodium hydroxide with or without AQ, the data indicated that the amount of lignin and cellulose that could be recovered was 22 and 36 %, respectively (as % of the wood mass). The substrate was characterised by a higher amount of a-cellulose (91–93 %), lower kappa no (12–13), viscosity (327–450 g mg/L) and DP (1078–1536). It was then presumed that such pulp could meet end-user requirement of the dissolving pulps. Industrial acceptance of this biomass fractionation concept, however, will further require careful assessments of various options for treating and purifying the hemicelluloses and lignin in their respect streams.enAlkaline treatmentFractionationHot waterSouth African Eucalyptus grandisArticleJohakimu, J. K., Jerome, A., Sithole, B. B., & Prabashni, L. (2015). Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments. http://hdl.handle.net/10204/8420Johakimu, Jonas K, A Jerome, Bishop B Sithole, and L Prabashni "Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments." (2015) http://hdl.handle.net/10204/8420Johakimu JK, Jerome A, Sithole BB, Prabashni L. Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments. 2015; http://hdl.handle.net/10204/8420.TY - Article AU - Johakimu, Jonas K AU - Jerome, A AU - Sithole, Bishop B AU - Prabashni, L AB - An alternative way of fractionating lignocellulose biomass into its individual components, hemicelluloses, lignin and cellulose, was investigated. South African Eucalyptus grandis wood chips were fractionated using a combination of hot water and alkaline treatments with or without AQ. Initially, the biomass samples were treated in hot water to remove hemicelluloses. At optimum prefraction conditions, the data acquired revealed that almost 12 % of the E. grandis wood biomass could be recovered as hemicelluloses. When the hemicelluloses preextracted biomass was further treated using sodium hydroxide with or without AQ, the data indicated that the amount of lignin and cellulose that could be recovered was 22 and 36 %, respectively (as % of the wood mass). The substrate was characterised by a higher amount of a-cellulose (91–93 %), lower kappa no (12–13), viscosity (327–450 g mg/L) and DP (1078–1536). It was then presumed that such pulp could meet end-user requirement of the dissolving pulps. Industrial acceptance of this biomass fractionation concept, however, will further require careful assessments of various options for treating and purifying the hemicelluloses and lignin in their respect streams. DA - 2015-09 DB - ResearchSpace DP - CSIR KW - Alkaline treatment KW - Fractionation KW - Hot water KW - South African Eucalyptus grandis LK - https://researchspace.csir.co.za PY - 2015 SM - 0043-7719 T1 - Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments TI - Fractionation of organic substances from the South African Eucalyptus grandis biomass by a combination of hot water and mild alkaline treatments UR - http://hdl.handle.net/10204/8420 ER -