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Details van artikel 17 van 25 gevonden artikelen
| Titel: |
Laboratory pre-assays for soil remediation by electro synthesis of oxidants and their electrokinetic distribution |
| Auteur: |
Mikkola, Heidi Schmale, Julia Y. Wesner, Wolfgang Petkovska, Slagjana |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 43 (2008) nr. 8 pagina's 907-912 |
| Jaar: |
2008-01 |
| Inhoud: |
The feasibility of an innovative electrokinetic soil remediation technique for an in situ application against fuel-contaminated soil has been studied in this work. This technique combines the anodic production of oxidizing agents on boron-doped diamond (BDD) electrode surfaces with their electrokinetic distribution in soil. In this study, the production of oxidizing agents, i.e., hydroxyl radicals (OH°) and peroxodisulfate (S2O82 -), from a 0.85 M sodium sulfate electrolyte with mechanically implanted BDD anodes at room temperature has been investigated. It was found that about 12 mmol/L of oxidants could be produced after 10 Ah/L with a current density of 200 mA/cm2. For investigating the transport velocity of peroxodisulfate in soil a vertical column system has been created. Experimental results show linear velocity behaviour for the oxidants' migration in 100% sand soil reaching up to 2 cm/h at an electrical gradient of 4 V/cm. As for different soil textures which have been tested, the assays stated that the highest velocity can be achieved in a 100% silt soil with 3.3 cm/h. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 17 van 25 gevonden artikelen
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