||Recovery and Re-Use of Trivalent Chromium in the Leather Tanning Industry. Compendium on Low- and Non-Waste Technology.
||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.
||24 Mar 82
Leather tanning ;
Waste minimization ;
Solid waste management ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Sponsored by Environmental Protection Agency, Washington, DC.
|NTIS Title Notes
||PC A03/MF A01