• 文献标题:   Elemental mercury capture by graphene-analogous carbon nitride anchored with copper sulfide
  • 文献类型:   Article
  • 作  者:   LIU DJ, YANG LT, WU J, LI B
  • 作者关键词:   mercury removal, graphitic carbon nitride, copper sulfide, polysulfide
  • 出版物名称:   CHEMICAL ENGINEERING JOURNAL
  • ISSN:   1385-8947 EI 1873-3212
  • 通讯作者地址:  
  • 被引频次:   24
  • DOI:   10.1016/j.cej.2020.127931 EA MAY 2021
  • 出版年:   2021

▎ 摘  要

The mercury emission pollution of coal-fired power plants has posed big threatens to the human heath and the environment. Here, a graphene-analogous carbon nitride (GCN) is used to capture Hg-0 from simulated flue gas in a fixed-bed reactor at low temperatures. The GCN displays good Hg-0 adsorption capability with Hg-0 removal efficiency of 32.4-69.4% within 25-200 degrees C. CuS incorporation can greatly reinforce the Hg-0 capture ability of the GCN. The optimal loading value of CuS is 10 wt%. Complete mercury capture is reached over 10CuS/GCN in the temperature range of 25-100 degrees C. Existence of NO marginally suppresses the Hg0 removal process, while presence of SO2 has hardly influence on Hg-0 capture. The copper and polysulfide active sites as well as the graphene-analogous nanosheet structure of the GCN contribute to the prominent Hg-0 capture performance of CuS-anchored GCN.