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Low frequency US and UV-A assisted Fenton oxidation of simulated dyehouse wastewater


Grčić, Ivana; Maljković, Marija; Papić, Sanja; Koprivanac, Natalija
Low frequency US and UV-A assisted Fenton oxidation of simulated dyehouse wastewater // Journal of hazardous materials, 197 (2011), 272-284 doi:10.1016/j.jhazmat.2011.09.084 (međunarodna recenzija, članak, znanstveni)


Naslov
Low frequency US and UV-A assisted Fenton oxidation of simulated dyehouse wastewater

Autori
Grčić, Ivana ; Maljković, Marija ; Papić, Sanja ; Koprivanac, Natalija

Izvornik
Journal of hazardous materials (0304-3894) 197 (2011); 272-284

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Simulated dyehouse wastewater; US and UV-A Fenton process; Box-Behnken design; mixture design; optimization; surfactants

Sažetak
The scope of the presented study was to explore the treatment possibilities for the simulated dyehouse wastewater (WW) by the Fenton oxidation ultrasonic (US) or UV-A assisted. Composition of WW included reactive azo dye, C.I. Reactive Violet 2 (RV2), anionic surfactant (LAS) and auxiliary chemicals. An emphasis was put on the influence of the LAS on the treatment efficiency. To explore the pseudo-catalytic effect of LAS and reagent dosages on the extents of decolourization and mineralization, different experimental design techniques were utilized. Box-Behnken design was used as a base for optimization and determination of the influencing factors ; numerical (Fe2+/3+, H2O2 and LAS concentration) and categorical factors (iron oxidation state and type of additional energy ; US or UV-A). Furthermore, a mixture design methodology was applied. This two-step optimization approach lead to a single optimal point for two advanced oxidation processes studied in comparison. Models describing the dependency of the overall efficiency on influencing factors were obtained. Application of US/Fe2+/H2O2 and UV-A/Fe2+/H2O2 processes for the treatment of WW was assessed. Only 26% of mineralization was achieved by Fenton process alone applied for the treatment of the dyehouse effluent in 10-fold dilution, while 43% of mineralization was achieved by US or UV-A assisted Fenton after the 60 minutes.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo



POVEZANOST RADA


Projekt / tema
125-1253092-1981 - Obrada otpadnih voda naprednim oksidacijskim tehnologijama (Sanja Papić, )

Ustanove
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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