Preparation of sulfur self-doped coal-based adsorbent and its adsorption performance for Cu.

The limited application of high-sulfur coal (HSC) and the increasing severity of copper pollution in solution are two pressing issues. To alleviate such issues, a sulfur self-doped coal-based adsorbent (HSC@ZnCl) was obtained by pyrolysis (850 °C, 60 min holding time) of HSC and ZnCl with a mass ratio of 1:0.5.