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Table 1 Overview of the number of bacterial OTUs that show a significant (P < 0.05) correlation with the operational parameters, based on the Kendall rank correlation coefficient. Only bacterial OTUs with a significant (P < 0.05) difference between DNA and RNA (203 OTUs in total) were considered

From: The active microbial community more accurately reflects the anaerobic digestion process: 16S rRNA (gene) sequencing as a predictive tool

Parameter

DNA

RNA

pH

5

7

Temperature

44

29

TAN

40

62

Free ammonia

8

16

Conductivity

35

43

Na+

41

7

K+

0

0

Total VFA

1

2

Acetate

0

0

Propionate

0

0

Butyrate

0

0

SRT

1

0

  1. TAN total ammonia nitrogen, VFA volatile fatty acids, SRT sludge retention time