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SM ISO690:2012 MATVEEVICI, Vera, ДУКА, Георгий, GONŢA, Maria, IAMBARŢEV, Viorica, MOCANU, Larisa. Удаление прямых красителей из текстильных сточных вод комбинированными методами. In: Электронная обработка материалов, 2009, nr. 4(45), pp. 69-75. ISSN 0013-5739. |
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Электронная обработка материалов | ||||||
Numărul 4(45) / 2009 / ISSN 0013-5739 /ISSNe 2345-1718 | ||||||
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Pag. 69-75 | ||||||
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The process of removal of textile coloring agents from model solutions by means of consecutive electrochemical and catalytic oxidative treatment in the presence of hydrogen peroxide, and its dependence of the amount of electrochemical coagulant, initial concentration and properties of the coloring agent as well as the iron ions (II) content was discussed in current paper. The obtained results prove that removal of direct colorants through electrical generation of coagulants is more effective and economically sound when carried out from more concentrated model solutions of textile residual waters (the initial concentration should between 150−200 mg/l.) The application of catalytic oxidation procedure can be applied in case of removal of direct colorants of less concentrated solutions (the amount of colorants should not exceed 50 mg/l). From the acquired results was identified that combined methods of electrochemical removal and catalytic oxidation by hydrogen peroxide of direct colorants assure their effective removal from model solutions of residual waters containing up to 200 mg/l of mentioned colorants. The mineralization and residues content was reduced by 97−98%, while the consumption of coagulant was lower by a factor of two in comparison with conventional methods of treatment. |
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