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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Perkins, Cory K. Reed, Travis M. Apblett, Allen W. Brown, Zachary A. |
| Copyright Year | 2017 |
| Abstract | A nanoporous WO3 sorbent was found to be highly reactive towards Pb2+, exhibiting a molar sorption capacity of 42.5% and sorption half-lives as low as 47 s. The sorbent lowers the concentration of Pb2+ to less than 0.5 ppb (the instrumental detection limit), a level well below the WHO and EPA action limits. Powder X-ray diffraction and Raman spectroscopy performed on the sorbent after loading with lead demonstrated that the formation of crystalline stolzite (PbWO4) had taken place. Therefore, lead sorption occurs via a chemical reaction between Pb2+ and nanoporous WO3 accounting for the high sorption capacity. Scanning electron microscopy showed that the sorption reaction led to a large morphology change from non-descript smaller tabular particles of the sorbents to large clusters of octahedral crystallites of the stolzite product. |
| Starting Page | 429 |
| Ending Page | 432 |
| Page Count | 4 |
| File Format | HTM / HTML PDF |
| ISSN | 20531400 |
| Volume Number | 3 |
| Issue Number | 3 |
| Journal | Environmental Science: Water Research & Technology |
| DOI | 10.1039/c6ew00349d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | WHO EPA Raman Adsorption Concentration Sorption X-ray crystallography Raman spectroscopy Stolzite Scanning electron microscope |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Engineering Water Science and Technology |
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