Fig. 1.
Algal removal efficiency of 100 mg L-1 local sands, 100 mg L-1 silica sands, modifiers (10 mg L-1 chitosan plus 10 mg L-1 PAC), modified local sands (10 mg L-1 chitosan plus 10 mg L-1 PAC plus 100 mg L-1 local sands) and modified silica sands (10 mg L-1 chitosan plus 10 mg L-1 PAC plus 100 mg L-1 silica sands) at different time. (A) A. carterae, (B) Chlorella sp.
