Agricultural and Biosystems Engineering Publications

Campus Units

Agricultural and Biosystems Engineering, Civil, Construction and Environmental Engineering, Food Science and Human Nutrition, Toxicology, Mechanical Engineering, Chemical and Biological Engineering, Bioeconomy Institute (BEI), Center for Bioplastics and Biocomposites

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

3-2010

Journal or Book Title

Journal of Environmental Engineering

Volume

136

Issue

3

First Page

308

Last Page

315

Research Focus Area(s)

Land and Water Resources Engineering

DOI

10.1061/(ASCE)EE.1943-7870.0000155

Abstract

This research was aimed at recovering Fe and Al compounds to produce a useful complex coagulant from fly ash using H2SO4 and SO2 from flue gas oxidized to SO3 by NaClO3. The reaction kinetics of wet SO2 scrubbing from simulated flue gas with fly ash slurry was studied. The SO2 scrubbing experiments were carried out in a jacketed glass reactor system with a simulated flue gas containing SO2 and N2 in the gas phase and fly ash slurry in the liquid phase. Sodium chlorate was added to oxidize SO2 to SO3, adding H2SO4 in the slurry. The reaction orders of both Fe2O3 and Al2O3 extraction from fly ash slurry were shown to be 1.5. The empirical Arrhenius expressions were also derived from the reaction rate constants obtained at each reaction temperature. The mass transfer process of SO2 with ClO−3 was evaluated using a two-film theory model.

Comments

This is a manuscript of an article published as Li, Ling, Maohong Fan, Robert C. Brown, Jacek A. Koziel, and J. van Leeuwen. "Kinetics of SO 2 Absorption with Fly Ash Slurry with Concomitant Production of a Useful Wastewater Coagulant." Journal of Environmental Engineering 136, no. 3 (2009): 308-315. DOI: 10.1061/(ASCE)EE.1943-7870.0000155. Posted with permission.

Copyright Owner

ASCE

Language

en

File Format

application/pdf

Published Version

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