Effect of experimental parameters on Hg0 removal by Ag/BiOI photocatalyst using wet process
ZHANG Anchao
LI Chengwei
LU Hao
SONG Jun
SUN Zhijun
LIU Zhichao
XIANG Jun
Abstract：The Ag/BiOI photocatalysts with different silver loadings were synthesized by using precipitation-photoreduction method.Influences of Ag content,reaction temperature,solution pH,common anions (NO3-,CO32-,Cl-and SO42-),flue gas components (O2,SO2 and NO),photocatalyst dosage and cyclic utilization on elemental mercury (Hg0) removal efficiency were investigated in a laboratory-scale wet bubbling Hg0 photocatalytic reactor.The results show that in comparison to BiOI,Hg0 removal efficiency of Ag/BiOI was greatly improved when a small amount of metallic silver were added.In particular,when the Ag content is 2％ in Ag (2％)/BiOI material,the Hg0 removal efficiency reaches 98％.Cl-and NO3-show no influences on Hg0 removal,while SO42-and CO32-exhibit inhibitory effects on Hg0 removal,particular for CO32-.The cyclic mercury removal test indicats that the Ag(2％)/BiOI photocatalyst is much stable in the process of Hg0 photocatalytic oxidation.
Keywords：wet processelemental mercury removalAg/BiOIphotocatalystexperimental parameter
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 74-81 )