Removal of hydrogen sulfide using palygorskite in a fixed bed adsorber

被引：0

作者：

Higuchi, T. ^{[1
]}

Zhang, Q. ^{[2
]}

Sekine, M. ^{[1
]}

Imai, T. ^{[1
]}

Yamamoto, K. ^{[1
]}

机构：

[1] Yamaguchi Univ, Grad Sch Sci & Engn, Ube, Yamaguchi 7558611, Japan

[2] Minist Environm Protect Peoples Republ China, Nucl & Radiat Safety Ctr, Beijing 100082, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2012年 / 66卷 / 08期

关键词：

adsorption capacity; fixed bed adsorber; hydrogen sulfide; palygorskite; ACTIVATED PALYGORSKITE; AQUEOUS-SOLUTION; ADSORPTION; CLAY; H2S;

D O I：

10.2166/wst.2012.392

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 degrees C, then decreased from 50 to 100 degrees C, which indicates that chemisorption took place and its better reaction temperature was around 50 degrees C.

引用

页码：1794 / 1798

页数：5