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The effect of chelation on the dosing strategy of cobalt to restore the performance of a cobalt limited methanol-fed bioreactor was investigated. Three upflow anaerobic sludge bed (UASB) reactors (30°C, pH 7.0) were operated with methanol as the substrate at an organic loading rate of 8.5gCODL −1 d −1 . One UASB reactor was supplied with several pulses of cobalt bound to EDTA, and...
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