Graduate School of Science and Engineering, Yamaguchi University, Ube, Yamaguchi, Japan.
Water Sci Technol. 2012;66(8):1794-8. doi: 10.2166/wst.2012.392.
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 (H(2)S) removal. Adsorption of H(2)S 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 H(2)S adsorption capacity decreased with an increase in inlet H(2)S concentration. This can be interpreted by the fact that H(2)S 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.
本工作描述了一种新型的坡缕石（一种具有高比表面积和孔表面活性的镁铝硅酸盐粘土）作为一种低成本、高效的硫化氢（H2S）去除吸附剂的用途。在固定床吸附器中研究了用酸或碱预处理的坡缕石对 H2S 的吸附。经碱预处理后的样品比原料和经酸预处理后的样品具有更好的动态吸附性能。H2S 的吸附容量随入口 H2S 浓度的增加而降低。这可以解释为 H2S 在坡缕石表面的吸附是化学吸附。吸附容量从 25°C 增加到 50°C，然后从 50°C 减少到 100°C，这表明发生了化学吸附，其更好的反应温度约为 50°C。
