ISSN:
1573-6776
Keywords:
bacterial resistance
;
granules
;
metal ions
;
methanogen
;
upflow anaerobic sludge blanket reactor
Source:
Springer Online Journal Archives 1860-2000
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract Metal ions (Cd2+, Cu2+, Ni2+, Zn2+ and Cr3+) did not affect glucose degradation or the production of methane during anaerobic digestion with intact and disintegrated granules from a UASB (Upflow Anaerobic Sludge Blanket) reactor. However, when Cu2+ was at 500 mg g−1 VSS (volatile suspended solids) in the media, the glucose degradation rates and methane production rates decreased by 14% and 32% in disintegrated granules, respectively, whereas, in intact granules, decreases were 3% and 14%, respectively. When various electroplating metal ions were tested, 50% inhibition of acetate degradation and methane production were produced by 210–770 mg g−1 VSS and 120–630 mg g−1 VSS, respectively. The relative toxicity of the electroplating metals on methane production was in the order of Zn2+ (most toxic) 〉 Ni2+ 〉 Cu2+ 〉 Cr3+ 〉 Cd2+ (least toxic).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026760604796
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