A steel slag-activated column for co-removal of sulfate and metals from acid mine drainage.

ABSTRACT: Acid mine drainage (AMD), containing excessive sulfates and heavy metals, poses a severe threat to the environment and human health. In this study, a laboratory-scale column device using varying ratios of coarse sand to carbon steel slag (CS/CSS) as the filled material was designed to efficiently remove typical pollutants in AMD. Results revealed that the removal rates of SO₄^2-, Fe, Mn, and Zn, as well as the pH value of the solution were influenced by the ratio of CS/CSS. The highest removal rates of SO₄^2-, Fe, Mn, and Zn were 92%, 99.99%, 99.98%, and 99.99%, respectively, for CS/20%CSS. Additionally, XPS and SEM results indicated that sulfate (SO₄^2-) existed in that groups associated with CaSO₄ and Fe-sulfate co

SUBMITTER: Zheng Q 

PROVIDER: S-EPMC12660713 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature