Figure 1.
Cr(VI) removal efficiencies by S. thunbergii at different pH (a) and biomass (b). Initial Cr(VI) concentration in part (b) was 2 mmol/L; Cr removed percentage (▴); adsorption of Cr(VI) per unit weight of adsorbent (▪).
Cr(VI) removal efficiencies by S. thunbergii at different pH (a) and biomass (b). Initial Cr(VI) concentration in part (b) was 2 mmol/L; Cr removed percentage (▴); adsorption of Cr(VI) per unit weight of adsorbent (▪).