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Titre du document / Document title

Experimental study and modelling of Cr (VI) removal from wastewater using Lemna minor

Auteur(s) / Author(s)

OPORTO Carla (1) ; ARCE Omar (1) ; VAN DEN BROECK Eric (2) ; VAN DER BRUGGEN Bart (3) ; VANDECASTEELE Carlo (3) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Centro de Aguas y Saneamiento Ambiental, Facultad de Ciencias y Tecnología, Universidad Mayor de San Simön, Calle Sucre frente Parque La Torre, P.O Box 5783, Cochabamba, BOLIVIE
(2) Umicore Research, Kasteelstraat 7, 2250 Olen, BELGIQUE
(3) Department of Chemical Engineering, Laboratory for Applied Physical Chemistry and Environmental Technology, K.U.Leuven, W. de Croylaan 46, 3001 Heverlee, Leuven, BELGIQUE

Résumé / Abstract

The removal of Cr(VI) from wastewater by Lemna minor was studied both at laboratory and pilot scale. Laboratory tests were conducted under different conditions of initial Cr(VI) concentration (0.5 and 2.0mg/l) and temperature (285 and 291 K). Batch experiments were carried out during 16 days in which the chromium concentrations, both in the biomass and in wastewater were measured. Data were used to characterize the biouptake capacity of the biomass; results showed that it increases with the temperature and when the initial Cr concentration decreases. The biouptake process could be fitted by an equation, with a correlation coefficient of 0.98. The removal process was assessed using the data of the variation of chromium concentration in the wastewater with respect to time; this allowed obtaining constant parameters which were applied in a mathematical model for the assessment of duckweed systems in a pilot scale plant.

Revue / Journal Title

Water research    ISSN  0043-1354   CODEN WATRAG 

Source / Source

2006, vol. 40, no7, pp. 1458-1464 [7 page(s) (article)] (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1967) (Revue)

Mots-clés anglais / English Keywords

Heavy metal

;

America

;

South America

;

Aquatic plant

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Lemnaceae

;

Bolivia

;

Mathematical model

;

Modeling

;

Concentration effect

;

Temperature effect

;

Operating conditions

;

Lemna minor

;

Biosorption

;

Biological purification

;

Waste water purification

;

Chromium VI

;

Industrial waste water

;

Mots-clés français / French Keywords

Métal lourd

;

Amérique

;

Amérique du Sud

;

Plante aquatique

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Lemnaceae

;

Bolivie

;

Modèle mathématique

;

Modélisation

;

Effet concentration

;

Effet température

;

Condition opératoire

;

Lemna minor

;

Biosorption

;

Epuration biologique

;

Epuration eau usée

;

Chrome VI

;

Eau usée industrielle

;

Mots-clés espagnols / Spanish Keywords

Metal pesado

;

America

;

America del sur

;

Planta acuática

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Lemnaceae

;

Bolivia

;

Modelo matemático

;

Modelización

;

Efecto concentración

;

Efecto temperatura

;

Condición operatoria

;

Lemna minor

;

Biosorción

;

Depuración biológica

;

Depuración aguas servidas

;

Cromo VI

;

Agua servida industrial

;

Localisation / Location

INIST-CNRS, Cote INIST : 8940 A, 35400014281381.0150

Nº notice refdoc (ud4) : 17654875



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