Mine water treatment with limestone for sulfate removal

► Limestone can effectively be applied for sulfate removal from neutral mine drainages. ► Breakthrough curves can be modeled by The BDST and other models. ► Fixed-bed loading (19.4 mg/g) is close to the equilibrium concentration (23.7 mg/g). ► Column sorption seems to be film controlled. ► FT-IR suggested the presence of sulfate on limestone surface.