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Table 1

Reactor feeding and biogas production during two evaluation periodsa

PeriodDuration (d)Sludge fed (kg)
VS fedb (g)
CH4 (L)
CH4 yieldc (L g−1)
1S3S1S3S1S3S1S3S
30 10.1 22.9 431 978 93 213 0.216 0.218 
37 13.8 28.0 528 1,074 124 249 0.235 0.232 
PeriodDuration (d)Sludge fed (kg)
VS fedb (g)
CH4 (L)
CH4 yieldc (L g−1)
1S3S1S3S1S3S1S3S
30 10.1 22.9 431 978 93 213 0.216 0.218 
37 13.8 28.0 528 1,074 124 249 0.235 0.232 

aPeriod 2 was from 30 to 60 days after starting the reactors, and period 3 was from 60 to 97 days.

bSludge volatile solids fed to each system.

cMethane production per g VS fed based on totals over each period.

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