Removal of Cr(VI) from Model Solutions by a Combined Electrocoagulation Sorption Process
| Autor: | Malika Chabani, Y. Ait Ouaissa, Aicha Bensmaili, Abdeltif Amrane |
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| Rok vydání: | 2012 |
| Předmět: |
Pollutant
Chromatography Chemistry Aluminum electrode General Chemical Engineering medicine.medical_treatment Sorption 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences 6. Clean water Industrial and Manufacturing Engineering Electrocoagulation chemistry.chemical_compound Adsorption Scientific method medicine Hexavalent chromium 0210 nano-technology Effluent 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Chemical Engineering & Technology. 36:147-155 |
| ISSN: | 0930-7516 |
| DOI: | 10.1002/ceat.201200375 |
| Popis: | The elimination of hexavalent chromium from synthetic effluents in a batch stirred electrocoagulation cell with aluminum electrodes coupled with a sorption process using red onion skin adsorbent is addressed. The effect of process variables such as medium pH and adsorbent concentration was investigated in an attempt to optimize the removal capacity. Adsorption and electrocoagulation were first considered separately, with maximum Cr(VI) removal yields of 47 % and 78 %, respectively, at pH 2. When combining the two processes, a removal of 97 % of the total Cr(VI) in a pH range of 3–6 was achieved. The almost total elimination observed for the considered pollutant demonstrated the feasibility and the synergistic effect of the coupled process. |
| Databáze: | OpenAIRE |
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