Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes
In this work, the treatment of synthetic wastewaters containing methylene blue (MB) and rhodamine B (RB) and actual textile wastewaters (ATW) using boron doped diamond (BDD) anodic oxidation was investigated. Voltammetric study has shown that both MB and RB can be oxidized directly at the anode surf...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2010-01-01
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| Series: | Air, Soil and Water Research |
| Online Access: | https://doi.org/10.4137/ASWR.S3639 |
| _version_ | 1819104348172451840 |
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| author | Nasr Bensalah Ahmed Abdel-Wahab |
| author_facet | Nasr Bensalah Ahmed Abdel-Wahab |
| author_sort | Nasr Bensalah |
| collection | DOAJ |
| description | In this work, the treatment of synthetic wastewaters containing methylene blue (MB) and rhodamine B (RB) and actual textile wastewaters (ATW) using boron doped diamond (BDD) anodic oxidation was investigated. Voltammetric study has shown that both MB and RB can be oxidized directly at the anode surface in the potential region where the electrolyte salt is stable. Galvanostatic electrolyses of synthetic and actual industrial wastewaters have led to total abatement of COD and TOC at different operating conditions (electrolyte salt and initial pollutant concentration and current density) and the efficiency of the electrochemical process was governed only by mass-transfer limitations. The nature of the supporting electrolyte has a great influence on the rate and the efficiency of the electrochemical oxidation of dyes. The treatment in the presence of NaCl appears to be more efficient in the COD removal, while in the presence of Na 2 SO 4 improves the TOC removal. From the experimental results it seems that the primary mechanisms in the oxidation of dyes are the mediated electro-oxidation by hydroxyl radicals and other oxidants electro-generated from supporting electrolyte oxidation. |
| first_indexed | 2024-12-22T02:04:55Z |
| format | Article |
| id | doaj.art-efd363f105304467a946c3cf3f05b7ec |
| institution | Directory Open Access Journal |
| issn | 1178-6221 |
| language | English |
| last_indexed | 2024-12-22T02:04:55Z |
| publishDate | 2010-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Air, Soil and Water Research |
| spelling | doaj.art-efd363f105304467a946c3cf3f05b7ec2022-12-21T18:42:33ZengSAGE PublishingAir, Soil and Water Research1178-62212010-01-01310.4137/ASWR.S3639Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD AnodesNasr Bensalah0Ahmed Abdel-Wahab1Chemical Engineering Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar.Chemical Engineering Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar.In this work, the treatment of synthetic wastewaters containing methylene blue (MB) and rhodamine B (RB) and actual textile wastewaters (ATW) using boron doped diamond (BDD) anodic oxidation was investigated. Voltammetric study has shown that both MB and RB can be oxidized directly at the anode surface in the potential region where the electrolyte salt is stable. Galvanostatic electrolyses of synthetic and actual industrial wastewaters have led to total abatement of COD and TOC at different operating conditions (electrolyte salt and initial pollutant concentration and current density) and the efficiency of the electrochemical process was governed only by mass-transfer limitations. The nature of the supporting electrolyte has a great influence on the rate and the efficiency of the electrochemical oxidation of dyes. The treatment in the presence of NaCl appears to be more efficient in the COD removal, while in the presence of Na 2 SO 4 improves the TOC removal. From the experimental results it seems that the primary mechanisms in the oxidation of dyes are the mediated electro-oxidation by hydroxyl radicals and other oxidants electro-generated from supporting electrolyte oxidation.https://doi.org/10.4137/ASWR.S3639 |
| spellingShingle | Nasr Bensalah Ahmed Abdel-Wahab Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes Air, Soil and Water Research |
| title | Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes |
| title_full | Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes |
| title_fullStr | Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes |
| title_full_unstemmed | Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes |
| title_short | Electrochemical Treatment of synthetic and Actual Dyeing Wastewaters Using BDD Anodes |
| title_sort | electrochemical treatment of synthetic and actual dyeing wastewaters using bdd anodes |
| url | https://doi.org/10.4137/ASWR.S3639 |
| work_keys_str_mv | AT nasrbensalah electrochemicaltreatmentofsyntheticandactualdyeingwastewatersusingbddanodes AT ahmedabdelwahab electrochemicaltreatmentofsyntheticandactualdyeingwastewatersusingbddanodes |