Immobilization of bimetallic nanoparticles on microfiltration membranes for trichloroethylene dechlorination
IWA Publishing 2008.
| Publié dans: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 58(2008), 8 vom: 07., Seite 1629-36 |
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| Auteur principal: | |
| Autres auteurs: | |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2008
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| Accès à la collection: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Sujets: | Journal Article Research Support, Non-U.S. Gov't Membranes, Artificial Metals Trichloroethylene 290YE8AR51 Chlorine 4R7X1O2820 |
| Résumé: | IWA Publishing 2008. Highly reactive nanoscale Ni/Fe nanoparticles were synthesized on microfiltration membranes for dechlorination of 20 mg/L trichloroethylene (TCE). Complete degradation of TCE was achieved within 25 min by Nylon 66 membrane with the production of ethane as a major degradation product, depicting that hydrodechlorination is the major reaction mechanism for TCE dechlorination. In addition, the carbon mass balance can be reached to 93%. The surface-area-normalized rate constant (kSA) for TCE degradation by Ni/Fe immobilized on Nylon 66 was 0.172 L h(-1) m(-2), which is higher than that by Ni/Fe in solution. Further TEM and SEM-EDS analyses show that Nylon 66 can retain higher amounts of Ni on the surface of membrane. In addition, the efficiency and rate for TCE dechlorination increased upon increasing mass loading of Ni from 2.5 to 20 wt%. Results obtained in this study clearly demonstrate that the use of Nylon 66 as the support for immobilization of bimetallic Ni/Fe nanoparticles has a good catalytic activity for dechlorination of TCE |
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| Description: | Date Completed 23.01.2009 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2008.543 |