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In chromium tanning process, about 20–40% of applied chromium is usually discharged into sewerage system causing serious environmental impact. The spent chromium effluents collected from two local small-siz ...
Desalination 144 (2002)
... 77 meq /100 g and 76.78 m2/g for the Na-purified fired clay fraction. The adsorption properties of the natural clay and the Na-purified clay in a chromium rich aqueous solution have been studied by the batch technique. The amount of adsorbed chromium ions, Q, was determined for the adsorption system ...
Desalination 248 (2009)
... on the solutions of tanning and liming of the tannery tawing of Rouïba/Algiers because of the nature of the substances which they contain, namely chromium and sulphides. Initially, of the pretreatments by precipitation and coagulation flocculation respectively with the solutions of tanning and limin ...
Desalination 200 (2006)
Purification–concentration process. Studies on the transport mechanism of a chromium (VI)–sulfuric acid– tri-n-octylamine (TOA)–ammonium carbonate system
... are put in contact with one another through the organic phase composed of an extractant and a diluent. We have applied this process to a system of chromium–sulfuric acid–tri-noctylamine–kerosene–ammonium carbonate. Interesting results were obtained for diluted solutions (100 ppm). A physica ...
Desalination 167 (2004)
Treatment of the tannery effluents from a plant near Algiers by nanofiltration (NF): experimental results and modeling
... was recovered from a leather manufacturing plant in the area of Algiers (Rouiba). The effluent of the bath of tanning and liming charged with chromium ions was the subject of this study. In the case of synthetic solutions, the experimental variations of the retention ranged from 94–99.9 ...
Desalination 165 (2004)
... the conductivity caused by migration remains without any changes. Keywords: Electrodialysis; Electrodeionization; Desalination; Ion-exchange resin; Chromium; Electrical conductivity 1. Introduction The method combining electrodialysis and ion exchange (electrodeionization, EDI) is a promising techniqu ...
Desalination 241 (2009)
Removal of hexavalent chromium (Cr+6) was carried out with different nanofiltration (NF) membranes for varying concentration and pH of the membrane feed solution. Two membrane ...
Desalination 219 (2008)
Pilot plant investigation on petrochemical wastewater treatment for the removal of copper and chromium with the objective of reuse
... metal ions from water. In this study applicability of alkaline reagents such as Ca(OH)2 (lime) and NaOH (caustic soda) in removing copper and chromium ions were evaluated. Separation of heavy metals such as chromium compounds from petrochemical industries’ cooling water wastes was achieved b ...
Desalination 171 (2004)
This study demonstrated the potential of the MEUF for simultaneous removal of organic pollutants such as phenols and inorganic pollutans such as chromium(III) ions. It has been suggested that at the surface of micelles Cr3+ are located due to electrostatic interactions and phenols are solubilized i ...
Desalination 191 (2006)
Heavy metals such as cadmium, chromium and manganese are toxic priority pollutants that commonly interfere with the beneficial use of wastewater for irrigation and industria ...
Desalination 244 (2009)