TABLE 5

Removal of As from mining wastewater samples

SW - surface water, C_i - initial concentration before adsorption, Cf - final concentration after adsorption.

LOD (mg∙ℓ'¹): Cr- 0.003; As - 0.014; Fe - 0.002; Hg- 0.001; Ni - 0.007; Zn - 0.008; Mn - 0.002; U- 0.035; Pb - 0.065;

Se - 0.017; SO₄^2-2 - 0.01 (by ion chromatography).

MQL (mg∙ℓ^-1): Cr - 0.010; As - 0.047; Fe - 0.007; Hg - 0.003; Ni - 0.023; Zn - 0.027; Mn - 0.007; U - 0.117; Pb - 0.217; Se - 0.057; SO4² - 0.03 (by ion chromatography).