Reference : Electrocoagulation as a tertiary treatment for paper mill wastewater: Removal of non-bio...

	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Chemical engineering
	To cite this reference:	http://hdl.handle.net/2268/125463

Title :	Electrocoagulation as a tertiary treatment for paper mill wastewater: Removal of non-biodegradable organic pollution and arsenic
Language :	English
Author, co-author :	Zodi, Salim [Laboratoire Réactions et Génie des Procédés (LRGP), UPR 3349 CNRS Nancy Université, ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France > > > >]
	Louvet, Jean-Noël [Laboratoire Réactions et Génie des Procédés (LRGP), UPR 3349 CNRS Nancy Université, ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France > > > >]
	Michon, Clémence [> >]
	Potier, Olivier [Laboratoire Réactions et Génie des Procédés (LRGP), UPR 3349 CNRS Nancy Université, ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France > > > >]
	Pons, Marie-Noëlle [Laboratoire Réactions et Génie des Procédés (LRGP), UPR 3349 CNRS Nancy Université, ENSIC, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France > > > >]
Publication date :	2011
Journal title :	Separation & Purification Technology
Publisher :	Elsevier Science
Volume :	81
Pages :	62-68
Audience :	International
ISSN :	1383-5866
Keywords :	[en] Arsenic ; Electrocoagulation ; fluorescence ; organic pollution ; paper mill effluent
Abstract :	[en] The tertiary treatment of paper mill wastewaters was investigated by testing the effect of batch electrocoagulation for 90 min with two parallel iron or aluminum plates at two values of the current density (100 and 150 A/m 2 ). Dissolved organic carbon removal ranged between 24% and 46%, and chemical oxygen demand removal ranged between 32% and 68%. UV–visible spectroscopy showed a reduction of aromaticity of the treated effluent. The process was also very efficient for the removal of lignin-based pollution, characterized by the fluorescence of humic substances. Arsenic was selected as an example non-organic micropollutant and was also satisfactorily removed (from 4 to 0.5 lg/L). The settling characteristics of the sludge obtained after the electrocoagulation treatment were also evaluated. The sludge aptitude to settling is better with Fe electrodes than with Al electrodes. The experimental results obtained in the present study indicate that electrocoagulation treatment can be very effective and capable of improving the paper mill wastewaters’ quality downstream of the biological treatment.
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/2268/125463

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