AI Article Synopsis
- The study compared the effectiveness of biofilm and suspended growth bioreactor systems for treating wastewater containing C.I. Acid Black 10B, revealing that the biofilm system achieved a higher dye removal efficiency of 93.14% compared to 84.29% in the suspended mode.
- Both reactor types exhibited resilience to higher dye concentrations without significant process inhibition.
- Enzyme activity differences highlighted the metabolic capabilities of microbes in each system, and voltammetric analysis demonstrated how reactor configurations and conditions influenced electron discharge and overall dye removal efficiency.
Article Abstract
Functional role of biofilm and suspended growth bioreactor configurations in response to the treatment of azo-dye (C.I. Acid Black 10B) bearing wastewater was evaluated in periodic discontinuous batch mode operation at varying dye concentrations. The biofilm system depicted higher dye removal efficiency (93.14%) compared to suspended mode (84.29%) at 350 mg dye/l operation. Both the reactor configurations did not show much process inhibition at higher dye loads studied. Azo reductase and dehydrogenase enzyme activities showed significant variation indicating the different metabolic capabilities of the native-microflora, stable proton shuttling between metabolic intermediates and differences in the delivery of reducing powers from the substrate metabolism towards dye removal. Voltammograms visualized marked variations in electron discharge properties with the function of reactor configuration, time intervals and dye load. Higher redox catalytic currents, lower Tafel slopes and polarization resistance showed good correlation with enzyme activities and dye removal.
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| http://dx.doi.org/10.1016/j.biortech.2013.07.126 | DOI Listing |
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