Treatment of vinasse by electrochemical oxidation: evaluating the performance of boron-doped diamond (BDD)-based and dimensionally stable anodes (DSAs)
- Resource Type
- Authors
- José Guillermo Rosas; Rubén González; D. Garcia; E.J. Martínez; Xiomar Gómez
- Source
- International Journal of Environmental Science and Technology. 15:1159-1168
- Subject
- chemistry.chemical_classification
Environmental Engineering
Materials science
Chemical oxygen demand
Environmental engineering
Vinasse
Diamond
02 engineering and technology
010501 environmental sciences
engineering.material
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Anode
Anaerobic digestion
chemistry
Chemical engineering
Electrode
engineering
Environmental Chemistry
Organic matter
0210 nano-technology
General Agricultural and Biological Sciences
0105 earth and related environmental sciences
- Language
- ISSN
- 1735-2630
1735-1472
The removal of colour and organic compounds from vinasses derived from the wine distillery industry was studied using boron-doped diamond-based electrodes and dimensionally stable anodes. The maximum reduction of organic compounds and colour was attained with the use of boron-doped diamond-based electrode after 10 h of operation at a current density of 6.6 mA cm−2. The current efficiency obtained was about 90% with a specific energy consumption (measured in terms of removal of chemical oxygen demand) of 17 kWh kg−1 COD removed. The dimensionally stable anodes were capable of removing 6–47% of the organic material and reached 60% decolourisation but with a lower current efficiency (between 85 and 10%) and much higher specific energy consumption values. The anaerobic digestion of vinasse after 1 h of treatment using boron-doped diamond-based electrode showed an effective mineralisation of the organic matter contained in the sample leading to an increase in methane production during anaerobic digestion.