From: Process optimization and effect of thermal, alkaline, H2O2 oxidation and combination pretreatment of sewage sludge on solubilization and anaerobic digestion
Variables
Symbols
Range and value of variables
0 (Low)
1 (Medium)
2 (High)
Temperature (°C)
A
25
75
90
Alkalinity (pH)
B
8
10
12
H2O2 concentration (mg/ g TS)
C
0
30
60