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A reductive approach to colour removal of textile wastewaters

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dc.contributor.author BERTEA, A.
dc.contributor.author BERTEA, A. P.
dc.date.accessioned 2019-09-10T11:11:09Z
dc.date.available 2019-09-10T11:11:09Z
dc.date.issued 2006
dc.identifier.citation BERTEA, A., BERTEA, A. P. A reductive approach to colour removal of textile wastewaters. In: Meridian Ingineresc. 2006, nr. 3, pp. 11-13. ISSN 1683-853X. en_US
dc.identifier.issn 1683-853X
dc.identifier.uri http://repository.utm.md/handle/5014/4404
dc.description.abstract The paper presents a study of the capability of 3 dyes, a direct, an acid and a reactive dye, to be transformed into uncoloured substances using sodium dithionite. It has been found that in some special cases, the use of sodium dithionite may represent a solution for the colour removal of the textile wastewater. The results depend heavily on the pH value, and the needed dithionite concentration is relatively low, depending of the dyestuff concentration. The influence of the temperature is important, and this is why on site treatment being highly recommended. In all cases, important drawback of the sodium dithionite have to be taken into consideration: handling difficulties, potential generation of toxic gases, decomposition by oxidation when exposed to air and COD increase. en_US
dc.description.abstract În lucrare se studiază măsura în care soluţiile a trei coloranţi, unul direct, unul acid şi unul reactiv, pot fi decolorate folosind ditionit. Rezultatele au evidenţiat faptul că această metodă de decolorare poate fi utilă în anumite situaţii speciale. Gradul de decolorare depinde în mare măsură de valoarea pH-ului, iar concentraţia necesară de ditionit este în general scăzută, în funcţie de concentraţia soluţiei de colorant. Influenţa temperaturii este majoră, motiv pentru care tratamentul on site este recomandat. În toate cazurile, nu trebuie ignorate dezavantajele folosirii ditionitului, legate de problemele de manipulare, degajarea de vapori toxici, capacitate de descompunere cât şi creşterea valorii CCO. ro
dc.description.abstract Le papier présente une étude de la capacité de 3 colorants, un direct, un acide et un réactive, d’être décolorées en utilisant le dithionite de sodium. On a trouvé que dans quelques cas de spécial, l'usage de dithionite de sodium peut représenter une solution pour l'enlèvement de la couleur des eaux usées textile. Les résultats dépendent lourdement sur la valeur de pH, et la concentration de dithionite nécessaire est relativement basse, dépendant de la concentration du colorant. L'influence de la température est importante, et ceci est pourquoi le traitement on site est extrêmement recommandé. fr
dc.description.abstract В работе изучается мера, при которой растворы трех красителей, один прямой, один кислотный и другой реактивный, используя дитионит. Результаты показали что этот метод обесцвечивания может быть полезен в определенных специальных случаев. Степень обесцвечивания зависит в большей степени от значения pH, а нужная концентрация дитионита в общем низкая и зависит от концентрации раствора красителя. Влияние температуры большое поэтому обработка on site рекомендуема. Во всех случаях нельзя игнорировать недостатки использования дитионита. ru
dc.language.iso en en_US
dc.publisher Editura U.T.M. en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject textile wastewaters en_US
dc.subject colour removal en_US
dc.subject ape uzate textile en_US
dc.subject decolorarea apelor uzate en_US
dc.title A reductive approach to colour removal of textile wastewaters en_US
dc.title.alternative Decolorare reductivă a apelor uzate textile en_US
dc.title.alternative Une approche réductrice pour l'enlèvement de la couleur d'eaux usées textile en_US
dc.title.alternative Редуктивное обесцвечивание текстильных использованных вод en_US
dc.type Article en_US


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