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Microbiological Process Optimization of Biogas Synthesis

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T-RFLP pr<strong>of</strong>iles <strong>of</strong> the methanogenic community in DDGS-fed digesters<br />

Methanoculleus<br />

Gas production: 4.46 L/d<br />

4462 ppm H 2 S<br />

Gas production: 5.85 L/d<br />

281 ppm H 2 S (FeCl 3 )<br />

Propionic acid: 0 mg/L<br />

Gas production: 5.68 L/d<br />

47 ppm H 2 S (FeCl 3 )<br />

Propionic acid: 0 mg/L<br />

Gas production: 5.97 L/d<br />

69 ppm H 2 S (FeCl 3 )<br />

Propionic acid: 0 mg/L<br />

Propionic acid: 64.3 mg/L<br />

Gas production: 13.88 L/d<br />

31 ppm H 2 S (Ferrosorp)<br />

Propionic acid: 0 mg/L<br />

Methanosarcinales<br />

Methanosaeta<br />

Methanosarcina<br />

Methanomicrobiales<br />

#6.2<br />

#6.3<br />

#6.4<br />

#6.5<br />

#6.6<br />

Ziganshin et al., in prep.

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