Page 208 - PowerPoint Presentation

ISPITIVANJE EFIKASNOSTI DEKOLORIZACIJE REAKTIVNE TEKSTILNE BOJE
REACTIVE BLUE 52 POMOĆU UNAPREĐENIH OKSIDACIONIH PROCESA (AOP-A)

TESTING THE EFFICIENCY OF DECOLORIZATION OF REACTIVE TEXTILE DYES
REACTIVE BLUE 52 BY MEANS OF ADVANCED

OXYDATION PROCESSES (AOPS)

Mentor: Dr Biljana Dojčinovid, dipl. hem. IHTM - Centar za hemiju, Beograd

Autor: BOGDANA MANOJLOVID Učenica II3 razreda Gimnazije "Sveti Sava", Beograd

REZIME

Jedan od najčešdih organskih zagađivača su boje iz tekstilne industrije. One zbog svoje obojenosti
onemogudavaju prodor sunčeve svetlosti, a samim tim sprečavaju fitoplanktone da proizvedu kiseonik. Posledice su
anaerobna sredina i uništavanje ekosistema. Tradicionalne metode (fizičke, hemijske i biološke) su nedovoljno
efikasne u dekolorizaciji tekstilnih boja. Zbog toga se za njihovo uklanjanje koriste AOP-i (Advanced Oxydation
Proces) koji su se pokazali kao daleko efektivniji.

Cilj ovog rada je pronalaženje optimalnih uslova, koje se odnose na koncentracije reagenasa, pH i vreme
tretmana, pri kojoj se dobija najefikasnija dekolorizacija vodenog rastvora Reactive Blue 52, boje za pamuk.
2+
Početna koncentracija vodenog rastvora boje bila je 40,0 mg/L, a ispitivani sistemi bili su: H 2 O 2 /UV i H 2 O 2 /Fe
(Fentonov reagens).

U oba sistema je ispitan uticaj različitih početnih koncentracija H 2 O 2 na efikasnost dekolorizacije, dok su
2+
intenzitet UV zračenja i početna koncentracija Fe bili konstantni. Efikasnost dekolorizacije je pradena pomodu UV-
VIS spektrofotometrije. Za uzorke kod kojih je postignuta najviša dekolorizacija, određena je i efikasnost
degradacije određivanjem količine totalnog organskog ugljenika (TOC-a) i upoređena sa efikasnošdu dekolorizacije.

Ključne reči: Dekolorizacija, Degradacija, Reaktivne tekstilne boje, Reactive Blue 52, Unapređeni oksidacioni procesi
(AOP), UV-VIS, TOC.

SUMMARY

One of the most common organic pollutants are dyes from the textile industry. Because of their coloration
they prevent the breach of sunlight, therefore preventing the phytoplanktons from producing oxygen. The
consequences are an anaerobic environment and the destruction of the ecosystem. Traditional methods (physical,
chemical and biological) are not efficient enough when it comes to textile dye decolorization. Because of that, for
their removal, AOP-s (Advanced Oxidation Process), that have shown themselves far more effective, are being
used.

The objective of this project is finding the optimal conditions that refer to the concentration of reagents, pH
and the duration of the treatment at which the most effective decolorization of the aqueous solution of Reactive
Blue 52 cotton dye is achieved. The initial concentration of the aqueous solution was 40,0 mg/L and the tested
2+
systems were H 2 O 2 /UV and H 2 O 2 /Fe (Fenton’s reagent).
In both systems the influence of different initial concentrations of H 2 O 2 was tested on the efficiency of
2+
decolorization while the intensity of the UV radiation and the initial concentration of Fe were constant. The
efficiency of decolorization was followed using UV-VIS spectrophotometry. For samples where maximum
decolorization was achieved the efficiency of degradation was also tested by determining the quantity of total
organic carbon (TOC) and compared with the efficiency of decolorization. Key words: Decolorization, Degradation,
Reactive textile dyes, Reactive Blue 52, Advanced Oxidation Processes (AOPs), UV-VIS, TOC.