| Residential College | false |
| Status | 已發表Published |
| FTIR and XPS study of immobilization of chromium with fly ash based geopolymers | |
| Liu S.-F.1; Wang P.-M.1; Li Z.-J.2; Lo I.M.-C.2 | |
| 2008 | |
| Source Publication | Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
 |
| ISSN | 10000593 |
| Volume | 28Issue:1Pages:67-71 |
| Abstract | Immobilization of Cr with fly ash geopolymers was investigated by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopic (XPS) techniques. The chromium sludge, as Cr(OH), was prepared with chemical precipitation method. The amounts of aluminum and silicon leached before and after the chromium sludge addition were measured using ICP-AES. The results suggested that the amounts of silicon and aluminum leached were reduced for the fly ash geopolymers after chromium sludge was incorporated. The decrease of silicon leaching was more pronounced than aluminum. FTIR results showed that the intensity of the main peak shifted into lower and the wave number of Si-O-Si and Al-O-Si became higher. The XPS results indicated that the O(1s) bind energy decreased, Si(2p) and Cr(2p) bind energy increased, while Al(2) bind energy remained unchanged due to Cr addition. It was also confirmed that the chromium is easily incorporated into the fly ash geopolymers paste, and polymerized with silicate units. The immobilization of Cr using fly ash geopolymers is attributed not only to physical encapsulation, but also to chemical reaction. |
| Keyword | Chromium Fly ash FTIR Geopolymer Immobilization XPS |
| URL | View the original |
| Language | 英語English |
| Fulltext Access | |
| Document Type | Journal article |
| Collection | University of Macau |
| Affiliation | 1.Tongji University 2.Hong Kong University of Science and Technology |
| Recommended Citation GB/T 7714 | Liu S.-F.,Wang P.-M.,Li Z.-J.,et al. FTIR and XPS study of immobilization of chromium with fly ash based geopolymers[J]. Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis, 2008, 28(1), 67-71. |
| APA | Liu S.-F.., Wang P.-M.., Li Z.-J.., & Lo I.M.-C. (2008). FTIR and XPS study of immobilization of chromium with fly ash based geopolymers. Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis, 28(1), 67-71. |
| MLA | Liu S.-F.,et al."FTIR and XPS study of immobilization of chromium with fly ash based geopolymers".Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis 28.1(2008):67-71. |
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