Effect of sulfate and nitrate on anaerobic degradation of night soil
1993
Sai Ram, M. | Singh, L. | Alam, S.I.
Effect of sulfate (20-60 mM) and nitrate (5-20 mm) on anaerobic degradation of night soil is reported With 3% volatile solids (VS), 20 mM sulfate enhanced biogas production two-fold at 10 and 20 degrees C. The presence of sulfate promoted utilization of propionate, butyrate and valerate by sulfate-reducing bacteria and of acetate by acetoclastic methanogenic bacteria. In contrast, nitrate inhibited the methanogenesis and its effect increased directly with VS concentration and inversely with temperature. Sulfate increased the methanogenic count from 17 X 10(6) to 3.0 X 10(6) unlike nitrate which reduced the count from 3.3 X 10(5) to 1.0 X 10(4) ml-1.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library