Dissolution Rate of Paper White Mud at Constant pH

Abstract:

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The dissolution of paper white mud(PWM) has been studied by pH-stat method in various parameters such as the pH values(4.3, 5.4, 6.0, 7.5), sorbent particle sizes (0-0.097mm, 0.097-0.105mm, 0.105-0.3mm), and the reaction temperature (30°C, 40°C, 50°C) in order to investigate the feasibility of using PWM as wet flue gas desulphurization sorbent. The results show that: the lower the pH value is, the higher the dissolution rate; particle size is the direct function of dissolution rate, the smaller the size is, the higher the dissolution rate, the optimal particle size in this work is 0-0.097mm; and reaction temperature has slightly influence on PWM dissolution. Kinetic analysis of the results show that the PWM dissolution is controlled by fluid film diffusion according to shrinking core model and the activation energy is 11.9±0.7 kJmol-1.

Info:

Periodical:

Advanced Materials Research (Volumes 356-360)

Edited by:

Hexing Li, Qunjie Xu and Daquan Zhang

Pages:

1371-1374

DOI:

10.4028/www.scientific.net/AMR.356-360.1371

Citation:

J. L. Zhao et al., "Dissolution Rate of Paper White Mud at Constant pH", Advanced Materials Research, Vols. 356-360, pp. 1371-1374, 2012

Online since:

October 2011

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Price:

$35.00

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