Novel insight in carbohydrate degradation during alkaline treatment

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Abstract

We present a mathematical model for the yield loss and decline in polymerization of carbohydrates. The model is applicable to the treatment of cellulose and hemicellulose in alkaline media and it features the actions of peeling, stopping and alkaline hydrolysis on the polymer chains. The reaction rates are estimated by fitting the model to experimental data. Experiments conducted at several temperatures enable the evaluation of activation energies for the reactions. The peeling reaction is further divided into primary and secondary peeling, depending on whether it originates from an initial reducing end group or from a reducing end group created by alkaline hydrolysis. We are able to evaluate the impact of the different processes on degradation and the portion of polymer chains possessing reducing end groups.

Details

Original languageEnglish
Title of host publication13th European workshop on lignocellulosics and pulp
Publication statusPublished - Jul 2014
MoE publication typeB3 Non-refereed article in conference proceedings
EventEuropean Workshop on Lignocellulosics and Pulp - Seville, Spain
Duration: 24 Jun 201427 Jun 2014
Conference number: 13

Workshop

WorkshopEuropean Workshop on Lignocellulosics and Pulp
Abbreviated titleEWLP
CountrySpain
CitySeville
Period24/06/201427/06/2014

ID: 6997731