Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 34, Issue 12, Pages 3767-3770Publisher
KOREAN CHEMICAL SOC
DOI: 10.5012/bkcs.2013.34.12.3767
Keywords
Mercury removal; Selenium species; Sorbent; Montmorillonite; Selenite
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Funding
- Korea Institute of Industrial Technology (KITECH)
- Internal Research Program in KITECH
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Potassium methylselenite (KSeO2(OCH3)) was reduced to elemental selenium, Se(0), and then doped onto montmorillonite K 10 (MK10) clay to examine the interaction between elemental mercury (Hg(0)) vapor and Se(0) in an effort to understand the possible heterogeneous reaction of Hg(0) vapor and Se(0) solid. The clay was used as a cost-effective support material for uniform dispersion of Se(0). The Se(0)-doped MK10 showed an excellent reaction performance with Hg(0) under an inert nitrogen gas at 70 and 140 degrees C in our lab-scale fixed-bed system. However, the precursor, KSeO2(OCH3)-doped MK10 showed a negligible reaction performance with Hg(0), suggesting that the oxidation state of selenium plays a key role in the reaction of Hg(0) vapor and selenium compounds.
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