Modeling of mercury oxidation and adsorption by cupric chloride-impregnated carbon sorbents
- University of Cincinnati, Cincinnati, OH (United States)
Cupric chloride-impregnated activated carbon sorbents (CuCl{sub 2}-ACs) showed good performance in Hg{sup 0} oxidation and adsorption in previously published entrained-flow test results. In addition, our previous studies indicated that Hg{sup 0} is oxidized by CuCl{sub 2}-ACs and the resultant oxidized mercury is readsorbed onto the sorbents. This study conducted mathematical modeling to interpret. these previous results and better understand the Hg{sup 0} oxidation and adsorption mechanism of CuCl{sub 2}-ACs. As a result the mathematical modeling results confirmed that Hg{sup 0} oxidation by CuCl{sub 2}-ACs is determined by the injection level of CuCl{sub 2} impregnated onto the sorbents. An increase in Cu Cl{sub 2} loading in CuCl{sub 2}-ACs was found to increase Hg{sup 0} oxidation but very slightly increased Hg adsorption because an increase in Cu Cl{sub 2} loading decreased the active CuCl{sub 2}-free carbon sites available for the readsorption of resultant oxidized mercury on the surfaces and inside the pores.
- OSTI ID:
- 21240395
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 48, Issue 19; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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