| Main Title |
Recovery and Re-Use of Trivalent Chromium in the Leather Tanning Industry. Compendium on Low- and Non-Waste Technology. |
| CORP Author |
Economic Commission for Europe (UN), Geneva (Switzerland). Working Party on Low and Non-Waste Technology and Re-Utilization and Recycling of Wastes.;Environmental Protection Agency, Washington, DC. |
| Publisher |
24 Mar 82 |
| Year Published |
1982 |
| Stock Number |
PB95-233326 |
| Additional Subjects |
Leather tanning ;
Chromium ;
Waste minimization ;
Precipitation ;
Recovery ;
Effluents ;
Solid waste management ;
Foreign technology
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB95-233326 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
The company removes trivalent chromium from the effluent and re-uses it in the tanning process. The mean concentration of chromium (III) in the effluent is 5 kg/per cu m. This effluent is treated with MgO, producing a fast-settling and compact precipitate, Cr(OH)3. The chromium (III) concentration in the effluent is thus reduced to 2 gper cu m (a reduction of more than 99 percent). The Cr(OH)3 is then dissolved in sulfuric acid for re-use in the tanning process. |
