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.
|Title of host publication||13th European workshop on lignocellulosics and pulp|
|Place of Publication||Spain|
|Number of pages||606|
|Publication status||Published - Jul 2014|
|MoE publication type||B3 Non-refereed article in conference proceedings|
|Event||European Workshop on Lignocellulosics and Pulp - Seville, Spain|
Duration: 24 Jun 2014 → 27 Jun 2014
Conference number: 13
|Workshop||European Workshop on Lignocellulosics and Pulp|
|Period||24/06/2014 → 27/06/2014|
Nieminen, K., Paananen, M., Testova, L., & Sixta, H. (2014). Novel insight in carbohydrate degradation during alkaline treatment. In 13th European workshop on lignocellulosics and pulp (pp. 603). Spain.