Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents
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 i...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2014-09-01
|
Series: | Materials |
Subjects: | |
Online Access: | http://www.mdpi.com/1996-1944/7/9/6569 |
id |
doaj-c55e2c5463ac4040bcdd11fadbee2525 |
---|---|
record_format |
Article |
spelling |
doaj-c55e2c5463ac4040bcdd11fadbee25252020-11-24T22:10:10ZengMDPI AGMaterials1996-19442014-09-01796569658410.3390/ma7096569ma7096569Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile EffluentsMercè Vilaseca0Víctor López-Grimau1Carmen Gutiérrez-Bouzán2Institute of Textile Research and Industrial Cooperation of Terrassa (INTEXTER), Universitat Politècnica de Catalunya-Barcelona Tech, Terrassa, Barcelona 08222, SpainInstitute of Textile Research and Industrial Cooperation of Terrassa (INTEXTER), Universitat Politècnica de Catalunya-Barcelona Tech, Terrassa, Barcelona 08222, SpainInstitute of Textile Research and Industrial Cooperation of Terrassa (INTEXTER), Universitat Politècnica de Catalunya-Barcelona Tech, Terrassa, Barcelona 08222, SpainMoringa 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.http://www.mdpi.com/1996-1944/7/9/6569Moringa oleifera natural coagulantreactive dyescolor removaltextile wastewaterwater reusecotton dyeing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mercè Vilaseca Víctor López-Grimau Carmen Gutiérrez-Bouzán |
spellingShingle |
Mercè Vilaseca Víctor López-Grimau Carmen Gutiérrez-Bouzán Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents Materials Moringa oleifera natural coagulant reactive dyes color removal textile wastewater water reuse cotton dyeing |
author_facet |
Mercè Vilaseca Víctor López-Grimau Carmen Gutiérrez-Bouzán |
author_sort |
Mercè Vilaseca |
title |
Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents |
title_short |
Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents |
title_full |
Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents |
title_fullStr |
Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents |
title_full_unstemmed |
Valorization of Waste Obtained from Oil Extraction in Moringa Oleifera Seeds: Coagulation of Reactive Dyes in Textile Effluents |
title_sort |
valorization of waste obtained from oil extraction in moringa oleifera seeds: coagulation of reactive dyes in textile effluents |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2014-09-01 |
description |
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. |
topic |
Moringa oleifera natural coagulant reactive dyes color removal textile wastewater water reuse cotton dyeing |
url |
http://www.mdpi.com/1996-1944/7/9/6569 |
work_keys_str_mv |
AT mercevilaseca valorizationofwasteobtainedfromoilextractioninmoringaoleiferaseedscoagulationofreactivedyesintextileeffluents AT victorlopezgrimau valorizationofwasteobtainedfromoilextractioninmoringaoleiferaseedscoagulationofreactivedyesintextileeffluents AT carmengutierrezbouzan valorizationofwasteobtainedfromoilextractioninmoringaoleiferaseedscoagulationofreactivedyesintextileeffluents |
_version_ |
1725808882437062656 |