scholarly journals Stochastic modelling of cellulose hydrolysis with Gauss and Weibull distributed transition probabilities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joseph Mcgreg Duru ◽  
Oana Cristina Pârvulescu ◽  
Tănase Dobre ◽  
Cristian Eugen Răducanu
Keyword(s):  
Acid Hydrolysis ◽  
Stochastic Models ◽  
Transition Probabilities ◽  
Stochastic Modelling ◽  
Cellulose Hydrolysis ◽  
Process Conditions ◽  
Hydrolysis Of Cellulose ◽  
Model Equations ◽  
Kinetics Of ◽  
Hydrolysis Of

AbstractTwo Markov-type stochastic models were developed to describe the kinetics of acid hydrolysis of cellulose. One of them involved a Gauss (normal) distribution of probabilities of chemical bond breaking, the other a Weibull distribution. It was considered that the random breaking of cellulose was based on the cleavage of a parent macromolecule into two descendants. Model equations and kinetics of acid hydrolysis of cellulose consisting of 10 and 100 units of cellobiose were presented. The effects of acid concentration and temperature on the kinetics of hydrolysis process were taken into account. The results obtained applying both stochastic models were in a reasonable agreement with those obtained using a deterministic kinetic model. These stochastic models can accurately describe the kinetics of acid hydrolysis and cover the drawbacks of some deterministic kinetic models, e.g., large number of model equations and parameters, modification of parameter values by changing the process conditions.

scholarly journals New methods of acid hydrolysis of cellulose and plant raw materials

2021 ◽  
Vol 57 (1) ◽  
pp. 119-128
Author(s):  
V. S. Boltovsky
Keyword(s):  
Acid Hydrolysis ◽  
Plant Biomass ◽  
Raw Materials ◽  
Agricultural Waste ◽  
Feed Additives ◽  
Process Conditions ◽  
Catalytic Systems ◽  
Plant Raw Materials ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Prospects for the development of hydrolysis production are determined by the relevance of industrial use of plant biomass to replace the declining reserves of fossil organic raw materials and increasing demand for ethanol, especially for its use as automobile fuel, protein-containing feed additives that compensate for protein deficiency in feed production, and other products. Based on the review of the research results presented in the scientific literature, the analysis of modern methods of liquid-phase acid hydrolysis of cellulose and various types of plant raw materials, including those that differ from traditional ones, is performed. The main directions of increasing its efficiency through the use of new catalytic systems and process conditions are identified. It is shown that the most promising methods for obtaining monosaccharides in hydrolytic processing of cellulose and microcrystalline cellulose, pentosan-containing agricultural waste and wood, are methods for carrying out the process at elevated and supercritical temperatures (high-temperature hydrolysis), the use of new types of solid-acid catalysts and ionic liquids. 

Kinetics of the acid hydrolysis of cellulose found in paper refuse

1971 ◽  
Vol 5 (6) ◽  
pp. 545-547 ◽  
Author(s):  
Robert D. Fagan ◽  
Hans E. Grethlein ◽  
Alvin O. Converse ◽  
Andrew Porteous
Keyword(s):  
Acid Hydrolysis ◽  
Hydrolysis Of Cellulose ◽  
Kinetics Of ◽  
Hydrolysis Of

scholarly journals Acid Hydrolysis of Cellulose as the Entry Point into Biorefinery Schemes

ChemSusChem ◽  
2010 ◽  
Vol 3 (3) ◽  
pp. 296-296 ◽  
Author(s):  
Roberto Rinaldi ◽  
Ferdi Schüth
Keyword(s):  
Acid Hydrolysis ◽  
Entry Point ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

scholarly journals Kinetics of the Acid Hydrolysis of Substituted Benzoic Anhydrides in Dioxan-Water Mixtures.

1964 ◽  
Vol 18 ◽  
pp. 2248-2254 ◽  
Author(s):  
J. Koskikallio ◽  
A. Holm ◽  
Nils Andreas Sørensen ◽  
D. R. Sparrow
Keyword(s):  
Acid Hydrolysis ◽  
Kinetics Of ◽  
Hydrolysis Of
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