Record Display for the EPA National Library CatalogRECORD NUMBER: 15 OF 26
|Main Title||Recycling Zinc in Viscose Rayon Plants by Two Stage Precipitation.|
|CORP Author||Environmental Protection Agency, Cincinnati, Ohio. Office of Technology Transfer.|
|Stock Number||PB-259 136|
|Additional Subjects||Water pollution control ; Zinc ; Textile processes ; Materials recovery ; Precipitation(Chemistry) ; Rayon ; Industrial wastes ; Cost estimates ; Circulation ;|
In an EPA demonstration grant, a process for precipitating a dense sludge of high zinc assay was proven. The zinc in the sludge was recovered and recycled to the rayon manufacturing plant. This recycling of zinc was shown to have no ill effects on rayon yarn. This process greatly enhances the economics of removing this source of zinc pollution, allowing neutralization of the acid stream and recovery of the zinc of a good profit for industrial yarns and at a moderate cost for textile yarns.