Kinetics of Electrochemical Delignification Mediated with Violuric Acid

Kinetics of Electrochemical Delignification Mediated with Violuric Acid

The violuric acid mediated chemical delignification system has a high delignification efficiency for pulp fibers and high delignification selectivity. The process conditions and effectiveness were carried out.The kinetics of electrochemical delignification has been investigated using the violuric ac...

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Veröffentlicht in:Applied Mechanics and Materials 2014-01, Vol.496-500 (Frontiers of Manufacturing and Design Science IV), p.179-182
Hauptverfasser: Zhong, Ya Jie, Kong, Fan Gong, Chen, Hong Lei, Wang, Shou Juan
Format: Artikel
Sprache:eng
Schlagworte:
Electric potential
Electrolytic cells
Fibers
Kinetic equations
Materials selection
Reaction kinetics
Selectivity
Voltage
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Zusammenfassung:The violuric acid mediated chemical delignification system has a high delignification efficiency for pulp fibers and high delignification selectivity. The process conditions and effectiveness were carried out.The kinetics of electrochemical delignification has been investigated using the violuric acid (VIO) as the mediator. The reaction orders with respect to delignification, concentration of VIO and voltage of electrolytic cell were determined experimentally, which were dependent on the reaction conditions. The kinetic equation of electrochemical delignification and estimation function of kappa number were obtained respectively as follows: - dK/dt = A e-[VI1.031[2.197K6.25 , E=16.2KJ/mol, K(t)={2.89×10-7+5.25k [VI1.031[2.197t}-0.19.
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.496-500.179