| Autor: |
Jiancheng Tu, Chunwei Han, Xiangyi Zha, Dandan Ma |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
2011 International Symposium on Water Resource and Environmental Protection. |
| DOI: |
10.1109/iswrep.2011.5893605 |
| Popis: |
Cu was removed from industrial sludge by traditional and microwave assisted acid extraction. The effects of acid concentration, extraction time, sludge particle size and solid/liquid (S/L) ratio on removal of Cu from industrial sludge were investigated. The results indicated that extraction of Cu by 1 N nitric acid for 90 min at an S/L ratio of 1/20 is the most economical traditional extraction conditions; the higher microwave power can increase the Cu extractable fractions; active carbon addition shortened the extraction time required to extract 80% Cu industrial sludge from 15 to 10 min. The addition of a microwave absorber, the microwave power input and the S/L ratio are the most important factors to microwave acid extraction of Cu. The results reveal that sulfuric acid was an effective extractant; Cu fraction bound to the Fe-Mn oxides was extracted. Conversely, the residue fraction remained during acid extraction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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