Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution
Harbor sediments contaminated with ZnS concentrate were treated by ferric chloride in HCl solution to remove Zn. The sediments were evaluated using Tessier’s sequential extraction method to determine the different metal phase associations of Zn. Leaching tests were performed to investigate the effec...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
MDPI AG
2015
|
| Online Access: | http://hdl.handle.net/20.500.11937/29447 |
| _version_ | 1848752806078447616 |
|---|---|
| author | Lee, S. Kwon, O. Yoo, K. Alorro, Richard |
| author_facet | Lee, S. Kwon, O. Yoo, K. Alorro, Richard |
| author_sort | Lee, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Harbor sediments contaminated with ZnS concentrate were treated by ferric chloride in HCl solution to remove Zn. The sediments were evaluated using Tessier’s sequential extraction method to determine the different metal phase associations of Zn. Leaching tests were performed to investigate the effects of experimental factors, such as agitation speed, ferric ion concentration, temperature, and pulp density, on the removal of Zn. The sequential extraction procedure revealed that about 17.7% of Zn in the sediment was associated with soluble carbonate and oxide phases. The results of the leaching tests indicated that higher ferric concentration and temperature increased the leaching efficiencies significantly, while the agitation speed has a negligible effect on the removal of Zn. The removal ratio increased to more than 99% within 120 min of treatment at 1 kmol·m−3 HCl solution with 1 kmol·m−3 Fe3+, 10% pulp density, and 400 rpm at 90 °C. The dissolution kinetics of Zn were discussed by comparing the two shrinking core models. It was determined that the kinetic data followed the diffusion controlled model well compared to the surface chemical reaction model. The activation energies were calculated to be 76.9 kJ/mol, 69.6 kJ/mol, and 58.5 kJ/mol for 0.25 kmol·m−3, 0.5 kmol·m−3, and 1 kmol·m−3 Fe3+, respectively. |
| first_indexed | 2025-11-14T08:14:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-29447 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:14:28Z |
| publishDate | 2015 |
| publisher | MDPI AG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-294472017-09-13T15:26:48Z Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution Lee, S. Kwon, O. Yoo, K. Alorro, Richard Harbor sediments contaminated with ZnS concentrate were treated by ferric chloride in HCl solution to remove Zn. The sediments were evaluated using Tessier’s sequential extraction method to determine the different metal phase associations of Zn. Leaching tests were performed to investigate the effects of experimental factors, such as agitation speed, ferric ion concentration, temperature, and pulp density, on the removal of Zn. The sequential extraction procedure revealed that about 17.7% of Zn in the sediment was associated with soluble carbonate and oxide phases. The results of the leaching tests indicated that higher ferric concentration and temperature increased the leaching efficiencies significantly, while the agitation speed has a negligible effect on the removal of Zn. The removal ratio increased to more than 99% within 120 min of treatment at 1 kmol·m−3 HCl solution with 1 kmol·m−3 Fe3+, 10% pulp density, and 400 rpm at 90 °C. The dissolution kinetics of Zn were discussed by comparing the two shrinking core models. It was determined that the kinetic data followed the diffusion controlled model well compared to the surface chemical reaction model. The activation energies were calculated to be 76.9 kJ/mol, 69.6 kJ/mol, and 58.5 kJ/mol for 0.25 kmol·m−3, 0.5 kmol·m−3, and 1 kmol·m−3 Fe3+, respectively. 2015 Journal Article http://hdl.handle.net/20.500.11937/29447 10.3390/met5041812 MDPI AG unknown |
| spellingShingle | Lee, S. Kwon, O. Yoo, K. Alorro, Richard Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title | Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title_full | Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title_fullStr | Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title_full_unstemmed | Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title_short | Removal of Zn from Contaminated Sediment by FeCl3 in HCl Solution |
| title_sort | removal of zn from contaminated sediment by fecl3 in hcl solution |
| url | http://hdl.handle.net/20.500.11937/29447 |