Article ID Journal Published Year Pages File Type
10395239 Bioresource Technology 2011 8 Pages PDF
Abstract
In this study, two Membrane Biological Reactors (MBR) with submerged flat membranes, one at lab-scale conditions and the other at pilot-plant conditions, were operated at environmental temperature to treat an industrial wastewater characterised by low phenol concentrations (8-16 mg L−1) and high salinity (∼150-160 mS cm−1). During the operation of both reactors, the phenol loading rate was progressively increased and less than 1 mg phenol L−1 was detected even at very low HRTs (0.5-0.7 days). Membrane fouling was minimized by the cross flow aeration rate inside the MBRs and by intermittent permeation. Microbial community analysis of both reactors revealed that members of the genera Halomonas and Marinobacter (gammaproteobacteria) were major components. Growth-linked phenol degradation by pure cultures of Marinobacter isolates demonstrated that this bacterium played a major role in the removal of phenol from the bioreactors.
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Physical Sciences and Engineering Chemical Engineering Process Chemistry and Technology
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