“…50 mL of aqueous solution (initial concentration of chromium was 20 gm/L) was taken in each 250 mL conical flasks and 10 g/L of 53 μm size biosorbent was added and exposed to varying agitation times (3,5,10,15,20,25,30,40,50,60,90,120, 150 and 180 min). These samples were shaken on an orbital shaker at 180 rpm at 30 o C for 1 min.…”