Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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($H_{2}S$ Adsorption Capacity of $Na_{2}CO_{3}$ and $KIO_{3}$ Impregnated Activated Carbon

($Na_{2}CO_{3}$ 및 $KIO_{3}$ 첨착 왕겨활성탄의 $H_{2}S$ 흡착특성

  • Kim, Jun-Suk (Department of Chemical Engineering, Myongji University) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
  • 김준석 (명지대학교 공과대학 화학공학과) ;
  • 김명수 (명지대학교 공과대학 화학공학과)
  • Published : 2002.09.30
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Abstract

Activated carbons with high surface area of 2,600 $m^{2}/g$ and high pore volume of 1.2 cc/g could be prepared by KOH activation of rice hulls at a KOH:char ratio of 4:1 and $850^{\circ}C$. In order to increase the adsorption capacity of hydrogen sulfide, which is one of the major malodorous component in the waste water treatment process, various contents of $Na_{2}CO_{3}$ and $KIO_{3}$ were impregnated to the rice-hull activated carbon. The impregnated activated carbon with 5 wt.% of $Na_{2}CO_{3}$ showed improved $H_{2}S$ adsorption capacity of 75 mg/g which is twice of that for the activated carbon without impregnation and the impregnated activated carbon with 2.4 wt.% of $KIO_{3}$ showed even higher $H_{2}S$ adsorption capacity of 97 mg/g. The improvement of $H_{2}S$ adsorption capacity by the introduction of those chemicals could be due to the $H_{2}S$ oxidation and chemical reaction with impregnated materials in addition to the physical adsorption of activated carbon.

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References

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