Development of Coconut Shell Activated Carbon with Sulfur Impregnation for Vapor Phase Mercury Removal

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hong-Fei Du¹  Ya-Guang Hong¹  Yu-Feng Duan¹  Min She¹  Qiang Zhou¹  Chun Zhu¹ 

[1] Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University

关键词: Coconut Shell;    Sulfur Impregnation;    Temperature;    Mercury Removal;    Sulfur Forms;   

DOI  :  10.1252/jcej.14we400

来源: Maruzen Company Ltd

【 摘 要 】

References(17)In order to develop highly efficient but low-cost adsorbents for mercury control, coconut shell was chosen to prepare activated carbon, which was then impregnated with elemental sulfur at 400–800°C for modification. Experimental studies on Hg0 removal were investigated in a fixed bed reactor system. Coconut shell activated carbon impregnated with elemental sulfur at 500°C exhibited better mercury adsorption capacity than commonly used activated carbon with high sulfur content. Factors including porous structure, sulfur content, and sulfur forms on adsorbent were all important for Hg0 adsorption. Elevating the impregnation temperature decreased the total sulfur content, while optimizing the pore structure parameters. Elemental sulfur, thiophene, and sulfate were the main forms of sulfur deposited on the carbon surface promoting the Hg0 adsorption capacity. Among them, elemental sulfur was the most effective.

【 授权许可】

Unknown