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RECORD NUMBER: 281 OF 616

OLS Field Name OLS Field Data
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
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Status
NTIS  PB95-233326 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/02/1995
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.
Supplementary Notes Sponsored by Environmental Protection Agency, Washington, DC.
NTIS Title Notes Monograph.
Category Codes 68C; 71M
NTIS Prices PC A03/MF A01
Primary Description 100/00
Document Type NT
Cataloging Source NTIS/MT
Control Number 521405890
Origin NTIS
Type CAT