concentration Duration (min)	% of dye removal at 75 (ppm)	% of dye removal at 100 (ppm)	% of dye removal at 125 (ppm)	% of dye removal at 150 (ppm)	% of dye removal at 175 (ppm)	% of dye removal at 200 (ppm)
10	45	48	52	55	60	63
20	56	58	60	60	61	60
30	66	66	66	64	63	62
40	77	79	73	68	68	68
50	86	83	79	72	70	69
60	94	87	84	75	72	70
70	100	91	89	78	74	71
80	-	95	93	80	75	72
90	-	100	96	82	76	73
100	-	-	98	84	77	74
110	-	-	99	86	78	75
120	-	-	100	87	79	75