Synergistic adsorption of Sb(Ⅴ)using wet ball milling of manganese slag supported by biochar
This study used wet ball milling to synthesize ball-milled biochar-based manganese slag composites(QBM)with a 1:1ratio of biochar to manganese slag.The goal was to improve the adsorption efficiency of Sb(Ⅴ)and the resource utilization of waste manganese slag.Herein,physicochemical properties,leaching toxicity,and Sb(Ⅴ)adsorption properties of the composite materials were discussed.The composite materials exhibited a reduction of 9.7%,63.9%,15.2%,and 70.9%in pH value,conductivity,cation exchange capacity,and particle size,respectively,after being wet ball milled at room temperature for 8hours with a solid-liquid ratio of 1:6 and a rotation speed of 150r/min.Zeta potential significantly increased(P<0.05)between-15 and-21mV.Ball milling effectively reduced the leaching of manganese ions and ammonium nitrogen in the manganese slag from 415mg/L to 2mg/L and 82mg/L to 15mg/L,respectively,which is the levels below the standard"Integrated Wastewater Discharge Standard"(GB8978-1996).Moreover,the Sb(Ⅴ)removal rate significantly increased from 31.86%to 80.98%(P<0.05).Wet ball milling improved Sb(Ⅴ)adsorption efficiency and safety by enhancing the physicochemical properties of materials.This study suggests that biochar-assisted wet ball milling of manganese slag can effectively mitigate Sb(Ⅴ)antimony pollution in the environment.This provides the idea that manganese slag can be used as a resource to reduce environmental pollution.
NETL
NSTL
万方数据
