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https://dspace.univ-ouargla.dz/jspui/handle/123456789/24626
Title: | Separation and Recycling Nitric Acid – Metals Waste Waters from a Brass Pickling by Diffusion Dialysis – Selective Physico - Chemical Methods |
Authors: | LALMI, Afaf AMRANE, Chahrazad BOUHIDEL, Kamel-Eddine |
Keywords: | cementation |
Issue Date: | 17-Oct-2019 |
Publisher: | Université Kasdi Merbah Ouargla |
Abstract: | This research work applies a clean technology to treatthe concentrated waste waters of a brass pickling bath. This last contains high concentration mixture of nitricacid and dissolved metals (Cu++, Zn++and Pb++). Now the studied industrial plant neutralizes HNO andprecipitates the metals with these 3 major drawbacks: Loss of an expensive acid ( 50 % of the initialquantity ) Pollution of the treated and rejectedeffluents by nitrates Production of a problematic ( filtration , storage ,fate …) metal hydroxides sludge ; To solve these problems we apply a clean hybridtechnology: The diffusion dialysis with anion exchangemembranes AMX; the result is excellent. Weseparate and purify HNO with a high efficiency. The remaining metals mixture contains Cu++ and Pb++ which are processed by chemical (selective precipitation ) and physico – chemical (cementation ,…) methods... |
Description: | Séminaire International sur l′Hydrogéologie et l′Environnement SIHE 2019 Ouargla |
URI: | http://dspace.univ-ouargla.dz/jspui/handle/123456789/24626 |
Appears in Collections: | 4. Faculté des Hydrocarbures, des Energies Renouvelables, des Sciences de la Terre et de l’Univers |
Files in This Item:
File | Description | Size | Format | |
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Afaf LALMI.pdf | 448,34 kB | Adobe PDF | View/Open |
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