2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/46

Browse

Subject: search.filters.subject.ape reziduale textile

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    INFLUENŢA AGENŢILOR AUXILIARI ASUPRA PROCESELOR DE EPURARE A APELOR REZIDUALE TEXTILE DE COLORANTUL AAD71
    (CEP USM, 2016) Porubin, Veronica
    Experimental studies were conducted to reduce the concentration of model systems, which contain direct dye AAD71, dispersing agent NaLS and Ethyleneglycol EGI, subjected to filtration through non-destructive methods as follows: coagulation, electroflotation, electro photocoagulation and absorption on activated carbon; and destructive methods as oxidation/photooxidation with Fenton's reagent and photo-oxidation with titanium oxide. The main proposed objective was reducing the concentration of pollutants from the model systems with dye concentration 200 mg/l,dispersant concentration 60 mg/l, and ethylene glycol dispersant 60 mg/l respectively, to admissible norms for discharge into water basins. According to the research results, it was found that the most efficient method for simple and complex model systems, is coagulation [Al 2 (SO4) 3] = 0.1M followed by adsorption on activated carbon, behind which were obtained values of COD -CR about 95% and the effect of fading can reach up to 100%.
  • Thumbnail Image
    Item
    ÎNLĂTURAREA AMESTECULUI DE COLORANŢI ŞI DISPERSANŢI DIN SOLUŢII PRIN APLICAREA METODELOR DE ELECTROFLOTOCOAGULARE ŞI ADSORBŢIE
    (CEP USM, 2016) Matveevici, Vera; Gonța, Maria; Mocanu, Larisa; Iambarțev, Viorica
    Cercetările de laborator au fost realizate pe sisteme model ce conţin coloranţi textili drept componenţi de bază, iar în calitate de compuşi auxiliari–agenţi de dispersie şi etilenglicol. În rezultatul cercetărilor ştiinţifice s-a constatat că efectul înlăturării amestecului de coloranţi şi dispersanţidin sistemele studiate depinde de dimensiunile şi sarcina particulelor de coloranţi, de natura şi concentraţia coloranţilor, dispersanţilor şi a polialcoolilor. De asemenea, epurarea apelor depinde de timpul de electroflotare şi de concentraţia ionilor de aluminiu.