The Application of Response Surface Methodology in the Study of Photodegraded Industrial Dairy Effluents by the Photo-Fenton Process: Optimization and Economic Viability
Table 8
Reagent energy consumption in 3 L of dairy effluent treated by the Photo-Fenton process with each experiment optimized for the Box-Behnken model.
Experiments
Energy consumption*US$/3 L
Reagent consumption**US$/3 L
Total value***US$/3 L
Average DOC reduction %
Relationship US$/%****(1000)
1 and 2
0.157
0.202
0.359
60.10
5.973
3 and 6
0.131
0.188
0.319
60.90
5.231
4 and 15
0.158
0.191
0.543
60.50
8.920
5 and 8
0.159
0.226
0.385
79.50
4.843
7 and 21
0.133
0.200
0.333
73.00
4.562
9 and 18
0.158
0.218
0.376
68.00
5.530
10 and 19
0.104
0.190
0.294
67.60
4.350
11 and 12
0.132
0.204
0.336
65.10
5.160
13 and 30
0.157
0.204
0.361
60.00
6.020
14 and 27
0.106
0.204
0.310
63.00
4.921
16 and 25
0.131
0.226
0.357
68.00
5.250
17 and 20
0.158
0.190
0.348
58.80
5.920
22 and 28
0.105
0.226
0.331
63.00
5.254
23 and 24
0.133
0.190
0.323
76.00
4.250
26 and 29
0.133
0.204
0.337
61.00
5.524
1 kW h = US$ 0.133; the third most expensive in Brazil—Brazil Business Portal.
**Quotation no. 212712 from Labsynth Products for Laboratories Ltd., October 23, 2011.
***US$ 1.00 = R$1.847; quote from UOL.
****Factors for further evaluation.
