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Valorization of waste obtained from oil extraction in moringa oleifera seeds: coagulation of reactive dyes in textile effluents
Vilaseca Vallvé, M. Mercedes; López Grimau, Víctor; Gutiérrez Bouzán, María Carmen
Universitat Politècnica de Catalunya. Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa; Universitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria; Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Moringa oleifera seeds contain about 40% of highly valued oil due to its wide range of applications, from nutritional issues to cosmetics or biodiesel production. The extraction of Moringa oil generates a waste (65%-75% of seeds weight) which contains a water soluble protein able to be used either in drinking water clarification or wastewater treatment. In this paper, the waste of Moringa oleifera extraction was used as coagulant to remove five reactive dyes from synthetic textile effluents. This waste constitutes a natural coagulant which was demonstrated to be effective for the treatment of industrial reactive dyestuff effluents, characterized by alkaline pH, high NaCl content and hydrolyzed dyes. The coagulation yield increased at high NaCl concentration, whereas the pH did not show any significant effect on dye removal. Moringa oleifera showed better results for dye removal than the conventional treatment of coagulation-flocculation with FeCl3 and polyelectrolyte. Treated water can be reused in new dyeing processes of cotton fabrics with high quality results
Àrees temàtiques de la UPC::Enginyeria tèxtil ::Impacte ambiental
Àrees temàtiques de la UPC::Enginyeria química::Indústries químiques::Química tèxtil
Moringa oleifera
Reactive dyes
Water--Purification--Coagulation
Water--Purification--Color removal
Sewage--Purification--Color removal
Textile industry--Environmental aspects
Water reuse
Dyes and dyeing--Cotton
Moringa oleifera
natural coagulant
reactive dyes
color removal
textile wastewater
water reuse
cotton dyeing
DYEBATH EFFLUENTS
WATER TREATMENT
REMOVAL
DECOLORIZATION
WASTEWATERS
NANOFILTRATION
COAGULATION/FLOCCULATION
DEGRADATION
COLOR
ADSORBENTS
Colorants -- Química
Aigües residuals -- Reutilització
Aigües residuals -- Indústries
Tints i tenyit -- Cotó
Indústria tèxtil -- Contaminació
Attribution-ShareAlike 3.0 Spain
http://creativecommons.org/licenses/by-sa/3.0/es/
info:eu-repo/semantics/publishedVersion
Artículo
         

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