Fig. 8

Effect of coexisting anions on the fluoride adsorption capacity (qₑ). Adsorbent dose = 1 g L⁻1, contact time = 30 min, initial fluoride concentration = 100 mg L⁻1, and coexisting anion concentration = 200 mg L⁻1.

Effect of coexisting anions on the fluoride adsorption capacity (qₑ). Adsorbent dose = 1 g L⁻1, contact time = 30 min, initial fluoride concentration = 100 mg L⁻1, and coexisting anion concentration = 200 mg L⁻1.