稻壳活性炭对单质汞吸附性能的实验研究  

An experimental study on adsorptive performance of rice husk activated carbon to mercury

作　　者：徐丽梅玫 许飘[1] 李彩亭[1] 高招[1] 樊小鹏[1] 

机构地区：[1]湖南大学环境科学与工程学院环境生物与控制教育部重点实验室,长沙410082

出　　处：《环境工程学报》2010年第9期2065-2068,共4页Chinese Journal of Environmental Engineering

基　　金：国家大学生创新性实验计划项目(521611068);国家自然科学基金资助项目(50878080)

摘　　要：利用农业废弃物稻壳制得了一种廉价的脱汞活性炭。该活性炭由稻壳经炭化、FeCl3活化、酸洗水洗和干燥工艺制得。在固定床吸附条件下,对不同的活化剂浸渍液料比、活化剂质量分数、活化温度、活化时间下所制得的活性炭对单质汞的吸附性能进行了实验研究。结果表明,80℃下,该活性炭对单质汞的脱除效率于180 min内可平均达84.71%,且保持相对稳定。A method to prepare cost-effective activated carbon for mercury capture by rice husk is recommended.The activated carbon was produced by carbonization,activation with FeCl3,washed by acid and deionized water,and finally dried.A bench-scale testing apparatus was constructed to evaluate the adsorption properties of adsorbents by changing liquid-feed ratio,mass fraction of activator,activation temperature and activation time.The results showed that the removal efficiency of elemental mercury could reach to 84.71% on average within 180 minutes at 80 ℃ with good stability.

关 键 词：单质汞 稻壳 FECL3 活性炭 吸附 

分 类 号：X701[环境科学与工程—环境工程]