Heterogeneous absorption is a potential technology for Hg0 contamination control in flue gas, in which the gas-liquid mass transfer of Hg0 (GLMT-Hg0) is a key problem that needs to be solved. In this work, an alcohol-enhanced MoS2/H2O system was proposed and investigated for Hg0 removal. The results showed that adding alcohol can improve Hg0 removal efficiency. Especially, adding 60 mM butanol can reach 94% of Hg0 removal efficiency. In addition, the effect of adding long carbon chains and monohydric alcohols is better than adding short carbon chains and polyhydric alcohols. The kinetics of Hg0 removal revealed that adding butanol increases E and KG(Hg0)/kG(Hg0), which can enhance GLMT-Hg0. The fate of Hg0 and the mechanism of its removal were revealed as Hg0 first being oxidized by Mo4+ to form a [Hg-Mo] complex, which reacts with an adjacent S site to form stable HgS. Most of the removed Hg was absorbed on MoS2, which is more favorable to be separated from the solution for recycle and reuse.
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