Journal
JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
Volume 29, Issue 5, Pages 268-274Publisher
SPRINGER-VERLAG BERLIN
DOI: 10.1038/sj.jim.7000311
Keywords
nickel; metals; anaerobic; methanol; UASB reactor; methanogenic
Categories
Ask authors/readers for more resources
The effect of omitting nickel from the influent on methanol conversion in an Upflow Anaerobic Sludge Bed (UASB) reactor was investigated. The UASB reactor (30degreesC, pH 7) was operated for 261 days at a 12-h hydraulic retention time (HRT) and at organic loading rates (OLRs) ranging from 2.6 to 7.8 g COD I reactor(-1) day(-1). The nickel content of the sludge decreased by 66% during the 261-day reactor run because of washout and doubling of the sludge bed volume. Nickel deprivation initially had a strong impact on the methanogenic activity of the sludge with methanol; e.g., after 89 days of operation, this activity was doubled by adding 2 muM nickel. Upon prolonged UASB reactor operation, methanol and VFA effluent concentrations decreased whereas the sludge lost its response to nickel addition in activity tests. This suggests that a less nickel-dependent methanol-converting sludge had developed in the UASB reactor.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available