Catalyst
0.02 g
Concentration of dye (M)
k・sec−1
Time taken for complete degradation (min)
COD values in mg・L−1
Degradation efficiency %
Before degradation
After degradation
Zinc sulphide
0.1 × 10−4
3.38 × 10−4
13
304
48
84.21
0.2 × 10−4
5.11 × 10−4
22
352
16
95.45
0.3 × 10−4
4.47 × 10−4
82
360
64
82.22
0.1 × 10−4
3.41 × 10−5
150
240
32
86.66
0.2 × 10−4
4.35 × 10−5
315
432
48
88.88
0.3 × 10−4
6.39 × 10−5
485
320
64
80.00