Reference : Electrocoagulation as a tertiary treatment for paper mill wastewater: Removal of non-...
Scientific journals : Article
Engineering, computing & technology : Chemical engineering
http://hdl.handle.net/2268/125463
Electrocoagulation as a tertiary treatment for paper mill wastewater: Removal of non-biodegradable organic pollution and arsenic
English
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 mailto [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 > > > >]
2011
Separation & Purification Technology
Elsevier Science
81
62-68
Yes (verified by ORBi)
International
1383-5866
[en] Arsenic ; Electrocoagulation ; fluorescence ; organic pollution ; paper mill effluent
[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.
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/125463

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