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Corrugated stainless-steel mesh as a simple engineerable electrode module in bio-electrochemical system: Hydrodynamics and the effects on decolorization performance
- Source :
- Journal of hazardous materials. 338
- Publication Year :
- 2017
-
Abstract
- The application of bio-electrochemical system (BESs) is strongly depended on the development of the engineering applicable electrode. Here we described an economical and readily processable electrode module with three-dimensional structure, the corrugated stainless-steel mesh electrode module (c-SMEM). This novel developed electrode module was demonstrated to provide a good hydrodynamic characteristic and significantly enhanced the decolorization performance of the BES when serving for treating azo dye (acid orange 7, AO7) containing wastewater. Compared to the conventional planar electrodes module (p-SMEM), c-SMEM was found to prolong the mean residence time (MRTθ) of AO7 and change the flow pattern closer to the plug flow. As a result, the maximum enhancement of the volumetric decolorization rate (vDR) can reach to 255%, even when the c-SMEM and p-SMEM have the same electrode surface area. In addition, a techno-economic analysis model was established to elucidated the effects of the decolorization performance and the material cost on the initial capital cost, which revealed the BES with c-SMEM could be economically comparable to or even better than the traditional bio-decolorization technologies. These results suggest c-SMEM holds great potential for engineering application, which may help paving the way of applying BES at large-scale.
- Subjects :
- Environmental Engineering
Materials science
Health, Toxicology and Mutagenesis
Cost-Benefit Analysis
Color
02 engineering and technology
010501 environmental sciences
Wastewater
Electrochemistry
01 natural sciences
Planar electrode
Bioreactors
Electronic engineering
Environmental Chemistry
Waste Management and Disposal
Electrodes
0105 earth and related environmental sciences
Plug flow
Electrochemical Techniques
Flow pattern
021001 nanoscience & nanotechnology
Stainless Steel
Pollution
Chemical engineering
Electrode
Hydrodynamics
Microscopy, Electron, Scanning
Initial capital
0210 nano-technology
Subjects
Details
- ISSN :
- 18733336
- Volume :
- 338
- Database :
- OpenAIRE
- Journal :
- Journal of hazardous materials
- Accession number :
- edsair.doi.dedup.....8415a5f2845398a1f4df38582b796ec8