Ponce De Leon, Carlos, Vasconcelos, Vanessa M., Rosiwal, Stefan and Lanza, Marcos R.V. (2019) Electrochemical degradation of Reactive Blue 19 dye by combining boron doped diamond and reticulated vitreous carbon electrodes. ChemElectroChem, 6 (13), 3516-3524, [201900563R1]. (doi:10.1002/celc.201900563).
Abstract
Reactive Blue 19 (RB-19) dye has low fixation efficiency, a long half-life and high toxicity. It is easily loss during the cleaning of textiles and can remain in the environment for long time causing serious environmental problems if not removed. This study reports the degradation of RB-19 by: 1) the electrochemical direct degradation with Boron-Doped Diamond (BDD) electrodes and 2) a combined processes using BDD and Reticulated Vitreous Carbon (RVC) electrodes that generates H2O2. The direct degradation uses different current densities and concentrations. High currents densities, longer electrolysis time and low volumetric flow rates, favour RB-19 degradation removing total colour and 100 % TOC at 5 and 60 min respectively. At 41 mA cm-2 current density and 20 dm3 h-1 volumetric flow rate, the energy consumption to degrade 20 mg dm-3 of RB-19 was 279 kWh kg-1. The TOC removal of RB-19 dye combining BDD and RVC at a current density of 41 mA cm-2 was below 72% during 90 min and the energy consumption increased to 612 kWh kg-1. The higher energy consumption obtained during the combined process suggested that the direct degradation process at low volumetric flow rates is more efficient than the combined process.
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- Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Southampton Marine & Maritime Institute (pre 2018 reorg)
- Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Institute for Life Sciences (pre 2018 reorg)
Current Faculties > Faculty of Environmental and Life Sciences > Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg) - Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Mechanical Engineering > Energy Technology Group
Mechanical Engineering > Energy Technology Group
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