▎ 摘　　要

NOVELTY - The method involves preparing sulfur-doped graphene aerogel by dispersing oxidized graphene in deionized water. A sulfur-doped graphene aerogel paper electrode is prepared by mixing the sulfur doped graphene aerogel with a pre-formulated polyvinyl alcohol solution to form a paste-like dispersion liquid. The used electrode is desorbed and regenerated to reach absorption saturation by sulfur-doped graphene aerogel paper electrode. The conductivity of the solution returned to initial value, after removal of voltage in electrode so as to achieve desorption and regeneration of electrode. USE - Method for removing magnesium ions in water using sulfur modified graphene electrode. ADVANTAGE - The sulfur doped graphene aerogel is easily prepared, without pollution. Thus, the process is environment-friendly. The water adsorption efficiency during removal of magnesium ion is high. The process is simple to implement at high speed. The hardness in the water is effectively reduced. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustrating the infrared spectrum chart of the prepared sulfur doped graphene aerogel. (Drawing includes non-English language text)