Loading...
Please wait, while we are loading the content...
Similar Documents
Microscale investigation of Ni and Cd in co-processed cement products using X-ray absorption near edge structure spectroscopy
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yu-Fei, Yang |
| Copyright Year | 2011 |
| Abstract | A high-temperature calcination simulation in cement kiln was carried out to acquire clinker from heavy metals contained hazardous waste co-processing.The compositions of Ni and Cd compounds in the clinker and cement paste made from clinker were studied using X-ray absorption near edge structure (XANES).Significant change of Ni compounds in calcinations process was found.Different from Ni compounds added to raw material,most of Ni in clinker existed as oxides,hydroxides or carbonates Ni-Mg compound in the clinker.Little difference was found between the composition of Ni compounds in the cement paste and that in the clinker.It indicated that Ni-Mg compound changed little in hydration process.Cd in cement paste mainly existed as CdSO4,CdO,and CdCO3.The percentage of CdSO4,CdO and CdCO3 was 42.4%,40.4% and 17.1%,respectively.The Cd coumpounds in cement paste may be adsorbed by Ca(OH)2 crystals or imbedded in Ca(OH)2 crystals with low leachability. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.actasc.cn/hjkxxb/ch/reader/create_pdf.aspx?falg=1&file_no=20110107005&quarter_id=11&year_id=2011 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
