Removal of MTBE from a clay soil using electrokinetic technique
| Autor: | Fatemeh Ghaziani, A. T. Bordbar, Akbar A. Javadi, A. R. Estabragh |
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| Rok vydání: | 2016 |
| Předmět: |
Methyl Ethers
Soil test Environmental remediation Analytical chemistry 02 engineering and technology Electrolyte 010501 environmental sciences 01 natural sciences law.invention Soil law Environmental Chemistry Soil Pollutants Waste Management and Disposal Environmental Restoration and Remediation 0105 earth and related environmental sciences Water Science and Technology Chemistry Soil classification General Medicine Electrochemical Techniques 021001 nanoscience & nanotechnology Soil contamination Cathode Anode Distilled water Environmental chemistry Clay Aluminum Silicates 0210 nano-technology |
| Zdroj: | Environmental technology. 37(14) |
| ISSN: | 1479-487X |
| Popis: | Remediation of a soil contaminated with methyl tertiary butyl ether (MTBE) was studied by using the electrokinetic technique. A series of experimental tests were carried out on contaminated soil in an electro-osmotic apparatus at different applied gradients of voltage and time. The tests were conducted with distilled water and ethylenediaminetetra acetic acid (EDTA) solution as electrolyte. During each test the values of pH at anode and cathode reservoirs and also the discharge from cathode were measured. At the end of each test a number of soil samples were extracted from the middle of the soil at different distances from the anode and the removal of contaminant was measured by a gas chromatography apparatus. The results indicate that with EDTA as electrolyte the highest efficiency for removal of MTBE is achieved with 2.0 V/cm gradient and in the duration of 14 days. In addition, EDTA causes the values of pH to increase and decrease in the cathode and anode reservoirs, respectively. It also decreases the effluent and electro-osmotic permeability in comparison with distilled water. Experimental data were analysed by ANOVA and t-test methods. These statistical analyses showed significant difference (at 5% level) between the reference and other tests. |
| Databáze: | OpenAIRE |
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