Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2008 by Universidad Católica de Valparaíso -- Chile
Vol. 11 No. 2, Issue of April 15, 2008
 


Table 4. Removal of sulfide in sulfide medium prior to biogas production.


Parameter

Abiotic control

Alcaligenes sp. T307

(mg L-1)*

0 h

20 h

0 h

20 h

 pH

7.30±0.23

7.32 ±0.26

7.33±0.18

8.44±0.21

 Viable cells (cfu ml-1)

0

0

8.36±0.15

9.72±0.18

 Total sulfide (TS)

71.1±1.3

72±1.5

72.1±1.4

12.1±0.15 (83.22%)

 Dissolved sulfide

61.6±0.56

62.1±0.61

60.6±0.47

17.1±0.31 (71.78%)

 Hydrogen sulfide (H2S)

0.74±0.09

0.63±0.07

0.73±0.08

0.07 ±0.002 (90.41)

 Sulfate

456±6.8

468±7.3

442±5.7

449±5.5

*Unless stated, mean value and standard deviation of four determinations


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