...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Different Design Strategies for Metal Sulfide Sorbents to Capture Low Concentrations of Gaseous Hg~0 in Coal-Fired Flue Gas and High Concentrations of Gaseous Hg~0 in Smelting Flue Gas
【24h】

Different Design Strategies for Metal Sulfide Sorbents to Capture Low Concentrations of Gaseous Hg~0 in Coal-Fired Flue Gas and High Concentrations of Gaseous Hg~0 in Smelting Flue Gas

机译：金属硫化物吸附剂的不同设计策略，以捕获燃烧烟气气体的低浓度的气态Hg〜0，熔炼烟气中的高浓度的气态Hg〜0

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Capturing gaseous Hg~0 using regenerable metal sulfides is a promising technology to recover gaseous Hg~0 from both coal-fired flue gas (CFG) and smelting flue gas (SFG) for the centralized control. Gaseous Hg~0 concentration in SFG is 2-3 orders of magnitude higher than that in CFG; therefore, the design strategy of metal sulfides for capturing gaseous Hg from CFG is quite different from that from SGF. In this work, the structure-activity relationship of metal sulfides to capture Hg~0 was investigated according to the remarkable difference in MoO_3 loading on sulfiireted FeTiO_x to capture low/high concentrations of gaseous Hg~0. The rate of Hg~0 adsorption onto metal sulfides was mainly related to the amounts of adsorption sites and S_2~(2-) on the surface, the affinity of adsorption sites to gaseous Hg~0, and the gaseous Hg~0 concentration. Meanwhile, the capacity for Hg~0 adsorption was approximately equal to the less of the amount of adsorption sites and S_2~(2-) on the surface. Furthermore, capturing low concentrations of gaseous Hg~0 from CFG required the metal sulfide sorbents having more adsorption sites with strong affinity to gaseous Hg~0, while capturing high concentrations of gaseous Hg~0 from SFG required the sorbents with enough adsorption sites.
机译：使用可再生金属硫化物捕获气态HG〜0是一种有前途的技术，可以从燃煤烟气（CFG）和熔炼烟气（SFG）中恢复气态HG〜0进行集中控制。 SFG中的气态HG〜0浓度比CFG高2-3个数量级;因此，用于捕获来自CFG的气态Hg的金属硫化物的设计策略与来自SGF的气态Hg的设计策略与SGF具有完全不同。在这项工作中，根据MOO_3负载的显着差异，研究了金属硫化物捕获Hg〜0的结构 - 活性关系，以捕获低/高浓度的气态Hg〜0。将Hg〜0吸附到金属硫化物上的速率主要与表面上吸附位点和S_2〜（2-）的量有关，吸附位点与气态Hg〜0的亲和力，以及气态Hg〜0浓度。同时，Hg〜0吸附的容量近似等于表面上吸附位点的量和S_2〜（2-）。此外，捕获低浓度气态汞〜0从CFG的需要具有气态汞〜0强亲和性更吸附位点金属硫化物吸附剂，同时捕捉气态汞〜0的高浓度的从SFG需要有足够的吸附位点的吸附剂。

著录项

  • 来源
    《Environmental Science & Technology》 |2021年第10期|7094-7101|共8页
  • 作者

    Chang Wang; Jian Mei; Qianqian Hong; Fangtian Xie; Zhen Ding; Chen Ma; Shijian Yang;

  • 作者单位

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

    School of Environment and Civil Engineering Jiangnan University Wuxi 214122 P. R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hg~0 adsorption; Hg~0 concentration; structure-activity relationship; metal sulfide sorbents; affinity to Hg~0; adsorption kinetics;

    机译：hg〜0吸附;hg〜0浓度;结构活动关系;金属硫化物吸附剂;对Hg〜0的亲和力;吸附动力学;

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