Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.jcis.2006.07.057
DC Field | Value | |
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dc.title | Diethylenetriamine-grafted poly(glycidyl methacrylate) adsorbent for effective copper ion adsorption | |
dc.contributor.author | Liu, C. | |
dc.contributor.author | Bai, R. | |
dc.contributor.author | Hong, L. | |
dc.date.accessioned | 2014-04-22T08:32:10Z | |
dc.date.available | 2014-04-22T08:32:10Z | |
dc.date.issued | 2006-11-01 | |
dc.identifier.citation | Liu, C., Bai, R., Hong, L. (2006-11-01). Diethylenetriamine-grafted poly(glycidyl methacrylate) adsorbent for effective copper ion adsorption. Journal of Colloid and Interface Science 303 (1) : 99-108. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcis.2006.07.057 | |
dc.identifier.issn | 00219797 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/50423 | |
dc.description.abstract | Amine-functionalized adsorbents have attracted increasing interest in recent years for heavy metal removal. In this study, diethylenetriamine (DETA) was successfully grafted (through a relatively simple solution reaction) onto poly(glycidyl methacrylate) (PGMA) microgranules to obtain an adsorbent (PGMA-DETA) with a very high content of amine groups and the PGMA-DETA adsorbent was examined for copper ion removal in a series of batch adsorption experiments. It was found that the PGMA-DETA adsorbent achieved excellent adsorption performance in copper ion removal and the adsorption was most effective at pH > 3 in the pH range of 1-5 examined. X-ray photoelectron spectroscopy (XPS) revealed that there were different types of amine sites on the surfaces of the PGMA-DETA adsorbent but copper ion adsorption was mainly through forming surface complexes with the neutral amine groups on the adsorbent, resulting in better adsorption performance at a higher solution pH value. The adsorption isotherm data best obeyed the Langmuir-Freundlich model and the adsorption capacity reached 1.5 mmol/g in the case of pH 5 studied. The adsorption process was fast (with adsorption equilibrium time less than 1-4 h) and closely followed the pseudo-second-order kinetic model. Desorption of copper ions from the PGMA-DETA adsorbent was most effectively achieved in a 0.1 M dilute nitric acid solution, with 80% of the desorption being completed within the first 1 min. Consecutive adsorption-desorption experiments showed that the PGMA-DETA adsorbent can be reused almost without any loss in the adsorption capacity. © 2006 Elsevier Inc. All rights reserved. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.jcis.2006.07.057 | |
dc.source | Scopus | |
dc.subject | Adsorption | |
dc.subject | Copper ion removal | |
dc.subject | Diethylenetriamine | |
dc.subject | Poly(glycidyl methacrylate) granules | |
dc.subject | Surface grafting | |
dc.type | Article | |
dc.contributor.department | CHEMICAL & BIOMOLECULAR ENGINEERING | |
dc.contributor.department | DIVISION OF ENVIRONMENTAL SCIENCE & ENGG | |
dc.description.doi | 10.1016/j.jcis.2006.07.057 | |
dc.description.sourcetitle | Journal of Colloid and Interface Science | |
dc.description.volume | 303 | |
dc.description.issue | 1 | |
dc.description.page | 99-108 | |
dc.description.coden | JCISA | |
dc.identifier.isiut | 000241079500013 | |
Appears in Collections: | Staff Publications |
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