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Table 2

Activities, specific surface areas and IC50 values of various sludges

Sludge codeActivitya (g CH4-COD/g VS·d)
Specific surface area (x 105 mm2/g TS)IC50 (mM)
PCETCEPCETCE
0.75 0.73 0.18 0.38 2.80 
0.45 0.50 0.21 0.34 2.56 
0.56 0.55 0.06 0.41 3.31 
0.45 0.45 0.12 0.39 2.85 
0.37 0.37 0.41 0.32 2.56 
0.39 0.39 0.14 0.40 2.52 
0.48 0.48 0.22 0.38 2.46 
0.52 0.52 2.66 0.19 1.93 
0.45 0.45 4.79 0.18 1.71 
A′ 0.73 0.73 2.69 0.21 2.13 
B′ 0.52 0.52 2.26 0.23 1.90 
C′ 0.51 0.51 1.10 0.28 2.28 
Sludge codeActivitya (g CH4-COD/g VS·d)
Specific surface area (x 105 mm2/g TS)IC50 (mM)
PCETCEPCETCE
0.75 0.73 0.18 0.38 2.80 
0.45 0.50 0.21 0.34 2.56 
0.56 0.55 0.06 0.41 3.31 
0.45 0.45 0.12 0.39 2.85 
0.37 0.37 0.41 0.32 2.56 
0.39 0.39 0.14 0.40 2.52 
0.48 0.48 0.22 0.38 2.46 
0.52 0.52 2.66 0.19 1.93 
0.45 0.45 4.79 0.18 1.71 
A′ 0.73 0.73 2.69 0.21 2.13 
B′ 0.52 0.52 2.26 0.23 1.90 
C′ 0.51 0.51 1.10 0.28 2.28 

aAcetoclastic methanogenic activity of control (without receiving contaminants), determined during the inhibition test.

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