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KMID : 1171820090240040112
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Journal of Environmental and Sanitary Engineering
2009 Volume.24 No. 4 p.112 ~ p.115
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Removal of NOx by using of TiB₂ Photocatalysis
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Lee Yong-Hwan
Choi Im-Ho
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Abstract
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This research was performed to purify water quality through removing T-N, and T-P and to estimating rate of NOx by the response of photocatalyst using ceramics. The ceramics was a mixtures of Titanium Diboride(TiB₂) which is used to develop armored cars with excellent protective power and lightness, Olivine, and Hwangto with water and was furnaced for an hour at 1160℃.
Hwangto and Olivine used in the study are produced at Haenam-gun, Jeonnam, and Andong-city, Gyeongsangbuk-do, respectively. The ground Hwangto and Olivine were seived through PR 100x200, and TiB₂ was a product of SIGMA ALDRICH.
The experiment was performed under the sunlight, Mass flow controller was used for constant flow to pass through the pyrex reactor which was fully charged with furnaced ceramics. The concentration of NO₂ gas passed through the pyrex reactor was measured by Multi Gas Monitor.
The reaction took for 60 minutes, The material was exposed to sunlight for 40 minutes. The sunlight was interrupted before and after the exposure for 10 minutes.
The result showed that the concentration of NO₂ gas of the ceramics with TiB₂ and without TiB₂ became reduced and then maintained the same concentration under the sunlight, and became increased when the sunlight is interrupted.
The NO₂ removing efficiency of the ceramics mixed with TiB₂ was 14~43% higher than that of the ceramics without TiB₂ under the sunlight. The study showed that the removing rate of NO₂ was 80% when the mixture rate of Hwangto, Olivine, and TiB₂ was 68%,30% and 2%.
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KEYWORD
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Titanium Diboride(TiB₂), Olivine, photocatalyst ceramics, NO<, SUB>, x<, /SUB>
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