This work describes the use of a novel palygorskite, a type of magnesium aluminium silicate clay possessing a high specific surface area and pore surface activity, as a low cost and highly efficient adsorbent for hydrogen sulfide (H2S) removal. Adsorption of H2S on palygorskite pretreated with acid or base was investigated in a fixed bed adsorber. The samples after base pretreatment had better dynamic adsorption performances than raw material and samples pretreated with acid. The H2S adsorption capacity decreased with an increase in inlet H2S concentration. This can be interpreted by the fact that H2S adsorption on the surface of palygorskite is chemisorption. The adsorption capacity increased from 25 to 50 °C, then decreased from 50 to 100 °C, which indicates that chemisorption took place and its better reaction temperature was around 50 °C.
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Research Article|
October 01 2012
Removal of hydrogen sulfide using palygorskite in a fixed bed adsorber
T. Higuchi;
1Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
E-mail: takaya@yamaguchi-u.ac.jp
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Q. Zhang;
Q. Zhang
2Nuclear and Radiation Safety Center, Ministry of Environmental Protection of the People's Republic of China, No. 54, Hongliannancun, Haidianqu, Beijing 100082, China
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M. Sekine;
M. Sekine
1Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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T. Imai;
T. Imai
1Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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K. Yamamoto
K. Yamamoto
1Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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Water Sci Technol (2012) 66 (8): 1794–1798.
Article history
Received:
January 11 2012
Accepted:
May 21 2012
Citation
T. Higuchi, Q. Zhang, M. Sekine, T. Imai, K. Yamamoto; Removal of hydrogen sulfide using palygorskite in a fixed bed adsorber. Water Sci Technol 1 October 2012; 66 (8): 1794–1798. doi: https://doi.org/10.2166/wst.2012.392
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