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Retention of chromium by modified Al-Bentonite
| Content Provider | Scilit |
|---|---|
| Author | Volzone, C. Garrido, L. B. |
| Copyright Year | 2002 |
| Description | Retention of chromium (III) from a tanning wastewater by modified Al-bentonites was studied. One bentonite from San Juan province, Argentina, was used. Al-bentonite was prepared by contact of bentonite with hydrolyzed OH-Al solutions (0.10 M in Al) for 24 hours. The modified Al-bentonites were obtained by: a) treatment with 0.5 M sodium chloride; b) with 0.5 M sodium chloride adjusted at pH 8; and c) treatment with an hexametaphosphate solution after sodium addition. Then, the samples were dried at 100 °C and heated at 500 °C. The chromium (III) retention by samples was carried out in batch system putting in contact the material with a 2000 ppm Cr tannery waste at different times. The retained chromium was characterized by analyzing the supernatant using UV-visible spectroscopy. The different chromium retention was correlated with structural characteristics of the solids. |
| Related Links | http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0366-69132002000300008&lng=en&nrm=iso&tlng=en |
| Ending Page | 156 |
| Page Count | 4 |
| Starting Page | 153 |
| ISSN | 03666913 |
| e-ISSN | 03666913 |
| DOI | 10.1590/s0366-69132002000300008 |
| Journal | Cerâmica |
| Issue Number | 307 |
| Volume Number | 48 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2002-09-01 |
| Access Restriction | Open |
| Subject Keyword | Cerâmica Water Science and Technology Retention of Chromium Chromium By Modified Modified Al Bentonite |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ceramics and Composites |
