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Table 2 16S rRNA gene copy numbers of prokaryotes and methanogens in the suspended fraction (OLRs of 13.4, 33.5, 38.0, 53.6, and 67.0 g-CODcr · L−1· day−1 ) and retained fraction on the CFT (OLR of 67.0 g-CODcr · L−1· day−1 ) of the BER + CFT

From: Efficient production of methane from artificial garbage waste by a cylindrical bioelectrochemical reactor containing carbon fiber textiles

OLR (g-CODcr · L −1 · day −1) Prokaryotes (copies · reactor −1) Methanogens (copies · reactor −1) Ratio of methanogens a(%)
Suspended fraction    
13.4 (9.6 ± 0.4) × 1012 (2.3 ± 0.3) × 1012 24.2 ± 4.0
33.5 (8.7 ± 0.8) × 1012 (2.6 ± 0.1) × 1012 29.6 ± 3.7
38.0 (1.3 ± 0.1) × 1013 (4.0 ± 0.5) × 1012 31.2 ± 6.7
53.6 (1.2 ± 0.2) × 1013 (3.2 ± 0.2) × 1012 27.1 ± 6.7
67.0 (1.5 ± 0.1) × 1013 (4.7 ± 0.1) × 1012 31.2 ± 2.1
Retained fraction    
67.0 (3.4 ± 0.5) × 1012 (1.8 ± 0.1) × 1012 52.3 ± 9.6
  1. aProportion of 16S rRNA gene copy number of methanogens to that of prokaryotes.