Arsenate adsorption onto two-line ferrihydrite for abandoned mine drainage

The 10,000 mg/L of As(V) stock solutions was prepared using sodium arsenate (Na2HAsO4 ⋅ 7H2OSigma Aldrich). This solution was diluted to 1 mg/L to 1,000 mg/L by using distilled water. All adsorbents used in the experiments were crushed and passed through 200 mesh-sized sieves.