▎ 摘　　要

NOVELTY - Collecting metal using modified graphene comprises (i) adding graphene and sulfur nitrogen compounds into water to obtain mixture, heating the mixture to 80-100 degrees C, refluxing, stirring, solid and liquid separation, storing the solid part as the modified graphene, where the surface of the modified graphene comprises at least one amino group and at least one sulfur, (ii) setting filter adsorption layer, where the filter adsorption layer comprises modified graphene, (iii) passing wastewater through the filter adsorption layer, (iv) discharging the sulfur of the modified graphene of the filter adsorption layer adsorbs metals in the wastewater, and liquid molecules and impurities in the wastewater from the filtration adsorption layer through the pores of the modified graphene, and (v) heating the filter adsorption layer with metal to 350-550 degrees C, boiling and volatilizing the modified graphene in the filter adsorption layer, and allowing to stand metal. USE - The method is useful for collecting metal using modified graphene using device. ADVANTAGE - The method and device effectively absorb and recycles metal in the waste water. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for device for collecting metal using modified graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating the method for collecting metal using modified graphene using device (Drawing includes non-English language text).