• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Effect of Moisture on Adsorption of Elemental Mercury by Activated Carbons
【24h】

Effect of Moisture on Adsorption of Elemental Mercury by Activated Carbons

机译：水分对活性炭吸附元素汞的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Experiments using activated carbon to capture elemental mercury were performedusing a bench-scale fixed bed reactor and a flow reactor to determine the role of surface moisture in mercury adsorption. Three activated carbon samples, which have different pore structure and ash contents, were tested for mercury adsorption capacity. From both fixed bed reactor and flow reactor experimental results, the moisture on Hg adsorption was observed for all three samples, despite extreme differences in their ash contents, suggesting that this effect is not associated with ash content. Temperature programmed desorption (TPD) experiments performed in the carbon samples after the Hg adsorption experiments indicated that chemisorption of Hg is a dominant process over physisorption for the moisture-containing carbon samples and diminished for the heat-treated moisture-free samples. X ray absorption fine structure spectroscopy results provide evidence that mercury bonding on the carbon surfaces was associated with oxygen through a mechanism likely involving electron transfer processes.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号