Thiol polystyrene resin was prepared by two-step reaction with chloromethyl polystyrene resin as material

and then it was characterized by Fourier transform infrared spectroscopy

Brunauer-Emmett-teller

elemental and thermogravimetric analyses. The Hg2+ removal performance of thiol polystyrene resin was also investigated in simulated flue gas containing Hg2+

desulfurization effluent and desulfurization slurry. It was found that thiol polystyrene resin possessed high thermal stability and could be used as an absorbent for Hg2+ removal from flue gas

desulfurization effluent and desulfurization slurry. The thiol polystyrene resin showed Hg2+ removal efficiencies above 90%

100% and 100% in flue gas

desulfurization effluent and desulfurization slurry

respectively. The placation of thiol polystyrene resin in the wet flue gas desulfurization system could capture Hg2+ in this system and avoid its entering to desulfurization gypsum

which could bring the mercury reemission. Moreover

thiol polystyrene resin captured Hg2+ was regenerated successfully by 6 mol·L-1 HCl and its regeneration rate with three times regeneration reached up 90.2%.