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Table 5 Predicted and actual observation data at the achieved optimum pretreatment

From: Process optimization and effect of thermal, alkaline, H2O2 oxidation and combination pretreatment of sewage sludge on solubilization and anaerobic digestion

Input Variables

Result

Temp (°C)

pH

H2O2 Concentr-ation (mg/g TS)

Cumulative MP (mL/g VS)

Increase MP (%)

Increase of sCOD (g/g VS)

COD solubiliza-tion (%)

Decrease of VSS (g/g VS)

VSS solubilization (%)

Increase of protein (g/L)

Increase of polysaccharide (g/L)

83.2

10.6

34.8

Pre

Act

Pre

Act

Pre

Act

Pre

Act

Pre

Act

Pre

Act

Pre

Act

Pre

Act

542

529

72.6

71.1

17.1

17.9

26.9

28.2

17.9

18.1

45.4

45.7

3.35

3.55

0.46

0.42