Recovery of Chromium from the Solid Residue by In-Situ-Generated Hypochlorite

The present study provides an electrochemical process for the recovery of chromium value from the solid residue of a chromium plant using electrogenerated hypochlorite. The process was studied using an in situ extraction method. The effect of various parameterssuch as pH, concentration of hypochlor...

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Veröffentlicht in:	Industrial & engineering chemistry research 2006-11, Vol.45 (23), p.7743-7747
Hauptverfasser:	Sozhan, Ganapathy, Mohan, Swaminathan, Vasudevan, Subramanyan, Balaji, Rengarajan, Pushpavanam, Subramanian
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Chemical engineering Exact sciences and technology
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Beschreibung
Zusammenfassung:	The present study provides an electrochemical process for the recovery of chromium value from the solid residue of a chromium plant using electrogenerated hypochlorite. The process was studied using an in situ extraction method. The effect of various parameterssuch as pH, concentration of hypochlorite, particle size of the solid effluent, pretreatment of sludge, choice of the acid for pH maintenance, and stirringon the extraction efficiency of chromium was investigated. A significant portion (50%−60%) of the total chromium content was recovered by performing the reaction under suitable operating conditions with hypochlorite.
ISSN:	0888-5885 1520-5045
DOI:	10.1021/ie060501e