Toxic effect of sulfur compounds on anaerobic biogranule |
| |
Authors: | Lin C Y Chang F Y Chang C H |
| |
Affiliation: | Department of Hydraulic Engineering, Feng Chia University, 40724, ROC, Taichung, Taiwan. cylin@fcu.edu.tw |
| |
Abstract: | The effects of sulfide, sulfite and sulfate on degradation of volatile fatty acid (VFA) in UASB process have been studied by using serum bottle assay and septage-leachate acclimated biogranules. The relative toxicity of the compounds towards methane production and degradation of total VFA varied as SO(4)(2-) -S>S(2-)>SO(3)(2-) -S and SO(4)(2-) -S>SO(3)(2-) -S>S(2-), respectively. The difference of this order shows the importance of choosing monitoring factor in evaluating the effect of sulfur compounds on a UASB system. For the individual VFA the effects of sulfur compounds depended on the types of VFA. The VFA-degrading activity of anaerobic biogranules was decreased by 50% when 34, 26 and 20mg of S(2-), SO(3)(2-) -S and SO(4)(2-) -S were added to each gram of biomass, respectively. A comparison of the toxicity-resistance between two different anaerobic biogranules that acclimatized with septage-leachate mixture and septage was also made.In the presence of the leachate, the toxicity-resistance of biogranules was not weakened to sulfide and sulfate but was enhanced to sulfite. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|