From the SelectedWorks of Alireza Khataee 27 Removal of Organic Dyes from Industrial Wastewaters Using UV/H2O2, UV/H2O2/Fe (II), UV/H2O2/Fe (III) Processes Alireza Khataee N. Daneshvar M. H. Rasoulifard M. S. Doraji Available at: https://works.bepress.com/alirezakhataee/37/
UV/H 2 O 2,UV/H 2 O 2 /Fe(II), UV/H 2 O 2 /Fe(III) (// // ) UV/H 2 O 2 UV/H 2 O 2 /Fe(II), UV/H 2 O 2 /Fe(III) B.. B. ( ) (UV-C). UV B.. H 2 O 2 UV UV/H 2 O 2 UV/H 2 O 2 UV/H 2 O 2 /Fe(II) UV/H 2 O 2 /Fe(III). mm ppm B. UV/H 2 O 2. UV UV H 2 O 2 mm ppm Fe(III) Fe(II) /mm.. : Removal of Organic Dyes from Industrial Wastewaters Using UV/H 2 O 2, UV/H 2 O 2 /Fe (II), UV/H 2 O 2 /Fe (III) Processes Nezamaddin Daneshvar Alireza Khataee 2 Mohammad Hossien Rasoulifard 2 Mirsaeed seyed Dorraji 3 (Received Oct. 4, 26 Accepted Feb. 22, 27) Abstract UV/H 2 O 2, UV/H 2 O 2 /Fe (II) and UV/H 2 O 2 /Fe (III) processes are very effective in removing pollutants from wastewater and can be used for treatment of dyestuff units wastewaters. In this study, Rhodamine B was used as a typical organic dye. Rhodamine B has found wide applications in wax, leather, and paper industries. The results from this study showed that this dye was degradable in the presence of hydrogen peroxide under UV-C irradiation (3W mercury light) and Photo-Fenton process. The dye was resistant to UV irradiation. In the absence of UV irradiation, the decolorization efficiency was very negligible in the presence of hydrogen. The - Professor of Applied Chemistry, University of Tabriz, nezam_daneshvar@yahoo.com 2- PhD Student of Applied Chemistry, University of Tabriz 3- M.Sc Student of Applied Chemistry, University of Tabriz nezam_daneshvar@yahoo.com - - - - 34
effects of different system variables such as initial dye concentration, duration of UV irradiation, and initial hydrogen peroxide concentration were investigated in the UV/H 2 O 2 process. Investigation of the kinetics of the UV/H 2 O 2 process showed that the semi-log plot of the dye concentration versus time was linear, suggesting a first order reaction. It was found that Rhodamine B decolorization efficiencies in the UV/H 2 O 2 /Fe (II) and UV/H 2 O 2 /Fe (III) processes were higher than that in the UV/H 2 O 2 process. Furthermore, a solution containing 2 ppm of Rhodamine B was decolorized in the presence 8 mm of H 2 O 2 under UV irradiation for 5 minutes. It was also found that addition of. mm Fe(II) or Fe(III) to the solution containing 2 ppm of the dye and 5 mm H 2 O 2 under UV light illumination decreased removal time to min. Keywords: Advanced Oxidation Processes, Photo-Fenton Process, Hydrogen Peroxide, Contaminated Water.. OH o +RH H 2 O+R o.. R o +O 2 RO o 2 Products π R 2 C CR 2 + OH o R 2 C o CR 2 OH [] OH o +R R o+ + OH - UV/H 2 O 2 /Fe(II)) (UV/H 2 O 2 /Fe(III) CO 2 H 2 O.[] B H 2 O CO 2 UV/H 2 O 2 /Fe(III).[] GC/MS -......[].. (E =/ ev) UV/H 2 O 2..[] UV/H 2 O 2. H 2 O 2 UV.[] Lei et al. 35
H 2 O 2 +hν 2OH o UV/ H 2 O 2 H 2 O 2 +OH o HO 2 o +H 2 O H 2 O 2 +OH o O 2 o- +H 2 O+H + H 2 O 2 +HO 2 o OH o +H 2 O+O 2 H 2 O 2 +O 2 o- OH o +O 2 +OH - OH o +OH o H 2 O 2 OH o +HO 2 o H 2 O+O 2 HO 2 o +HO 2 o H 2 O 2 +O 2 OH o +O 2 o- O 2 +OH - HO 2 o +O 2 o- HO 2 - +O 2 - (M - s - ) /* /* / / /* /* /* /* /* Fe(III) Fe(II). - ( ) : Art 7599 B UV ( ) ( ) - Shimadzu (UV-C) (II) (III)..() () : Fluka 2 Philips B - H2O2 + hv o 2OH 3+ Fe + H 2 O + hv 3+ Fe + H 2 O 2 UV/H 2 O 2 /Fe(II) 2 Fe + o + + OH + H 2+ o + Fe + HO 2 + H o 2OH H 2 O 2 + hv 2+ 3+ o Fe + H 2 O 2 Fe + HO + OH. UV/H 2 O 2 UV/TiO 2.[ ] UV/H 2 O 2 UV/H 2 O 2 /Fe(II),UV/H 2 O 2 /Fe(III) UV/H 2 O 2 -.[ ] UV/H 2 O 2 /Fe(II) UV/H 2 O 2 B UV/H 2 O 2 /Fe(III). H 2 O 2 UV - 36
- 4 3.5 3 y =.54x +.99 R 2 =.9934 2.5 2.5.5 5 5 2 25 3 35 (p p m ) B - Co C C = = Co Co H 2 O 2 () - UV -- UV/ H 2 O 2 UV H 2 O 2. UV/H 2 O 2 H 2 O 2 UV H 2 O 2 H 2 O 2 UV... UV-Vis -.. B.( ) () C C 37
-- UV/H 2 O 2 H 2 O 2..[] -- UV/H 2 O 2 /Fe(II) UV/H 2 O 2 /Fe(III) Fe(II) UV Fe(III)..[] UV H 2 O 2 -- UV/H 2 O 2 H 2 O 2 ppm B. H 2 O 2 H 2 O 2. UV/H 2 O 2.[].8.6 UV H2O2 UV/H2O2.4.2 5 5 2 ( ) UV/H 2 O 2 B [ ] o =ppm [H 2 O 2 ] o =ppm H 2 O 2 UV - :.8.6.4.2 5 5 2 25 3 35 4 45 () UV/H 2 O 2 B H 2 O 2 - [ ] o =ppm : H2O2=2mM 4 6 8 2 4 6 8 2-38
.9.8.7.6.5.4.3.2. 5 5 2 ( ) [dye]=ppm 2 3 [H 2 O 2 ] o = mm : UV/H 2 O 2 B -.8.6.4.2 5 5 2 Irradiation () time (min) UV/Fe(III)/H2O2 Fe(III)/H2O2 UV/H2O2 UV/Fe(III) UV/H 2 O 2 /Fe(III) B H 2 O 2 Fe(III) UV - [H 2 O 2 ] o = mm [Fe(III)] o=/mm[ ] o = ppm :.8.6.4.2 5 5 2 () Irradiation time (min) UV/Fe(II)/H2O2 Fe(II)/H2O2 UV/H2O2 UV/Fe(II) UV/H 2 O 2 /Fe(II) B H 2 O 2 Fe(II) UV - [H 2 O 2 ] o = mm [Fe(II)] o=/mm [ ] o = ppm : 39
.8.6.4.2 [Fe(III)]=.mM.2.5.7. 5 5 2 () UV/H 2 O 2 /Fe(III) B Fe(III) - [H 2 O 2 ] o =mm [ ] o = ppm :.8.6.4 Fe(II)=..2.5.2 5 5 2 ().7 UV/H 2 O 2 /Fe(II) B Fe (II) - [H 2 O 2 ] o =mm [ ] o = ppm :.. Fe(II) / / Fe(II) UV/ H 2 O 2 /Fe(III) UV/H 2 O 2 /Fe(II) B Fe(III) Fe(III). / UV/H 2 O 2 -- Ln(C/C ) UV H 2 O 2. Fe(II) H 2 O 2. UV/H 2 O 2 /Fe(III). UV/H 2 O 2 /Fe(II).[] Fe(II) Fe(III) -- UV/ H 2 O 2 /Fe (III) UV/H 2 O 2 /Fe(II) Fe(II) - 4
-Ln(C/Co) 4.5 4 3.5 3 2.5 2.5.5 y =.27x +.2 R 2 =.9998 5 5 2 25 ( ) 2.5 2.5 y =.955x -.373 R 2 =.7773 /C.5 -.5 5 5 2 25 () UV/H 2 O 2 - [H 2 O 2 ] o =mm [ ] o = ppm : UV ppm. UV/H 2 O 2 H 2 O 2 UV/H 2 O 2. UV/H 2 O 2 ppm Fe(III) Fe(II).. / H 2 O 2 -. UV/H 2 O 2. ppm. / - UV/H 2 O 2 /Fe(II) UV/H 2 O 2 /Fe(III),UV/H 2 O 2 B Fe(II) H 2 O 2.. UV Fe(III) 4
- - Daneshvar, N., Salari, D., and Khataee, A.R. (23). Photocatalytic degradation of azo dye acid red 4 in water: Investigation of the effect of operational parameters. J. Photochem. Photobiol., 57, -6. 2- Daneshvar, N., Salari, D., and Khataee, A.R. (24). Photocatalytic degradation of azo dye acid red 4 in water on ZnO as an alternative catalyst to TiO 2. J. Photochem. Photobiol., 62, 37-322. 3- Daneshvar, N., Salari, D., Niaei, A., and Khataee, A.R. (26). Photocatalytic degradation of the herbicide Erioglaucine in the presence of nanosized titanium dioxide: comparison and modeling of reaction kinetics. J. Enviromental Science and Health, part B, 4, -8. 4- Crittenden, J.C., Hu, S., Hand, D.W., and Green, S.A. (999). A kinetic model for UV/H 2 O 2 process in a completely mixed batch reactor. Water Res., 33(), 235-2328. 5- De laat, J., and Gallard, H. (999). Comparative study of the oxidation of Atrazine and acetone by UV/H 2 O 2, Fe(III)/UV, UV/ H 2 O 2 /Fe(III) and Fe(III) or Fe(II)/H 2 O 2. Chemosphere, 39, 2693-276. 6- Kusic, H., and Koprivanac, N. (26). Photo-assisted Fenton type process for dye degradation of phenol, a kinetic study. J. Hazard. Mater., 36, 632-644. 7- Lei, P., Chen, C., and Yang, J. (25). Degradation of dye pollutants by immobilized polyoxometalate with H 2 O 2 under visible-light irradiation. Environ. Sci. Technol., 39, 8466-8474. 8- Chen,F., ie,y., and He, J. (2). Photo-Fenton degradation of dye in methanolic solution under both UV and visible irradiation. J. Photochem. Photobiol., 38, 39-46. 9- Daneshvar, N., Rabbani, M., Modirshahla, N., and Behnajady, M.A. (24). Critical effect of hydrogen peroxide concentration in photochemical oxidative degradation of C.I.Acid Red 27 (AR27). Chemosphere, 56, 895-9. - Daneshvar, N., Behnajady, M.A., and Zorriyeh Asghar, Y. (26). Photooxidative degradation of 4-nitrophenol (4-NP) in UV/H 2 O 2 process: Influence of operational parameters and reaction mechanism. J. Hazard. Mater.,in press. - Kang, N., and Lee, D.S. (22). Kinetic modeling of Fenton oxidation of phenol and momochlorophenol. Chemosphere, 47, 95-924. - 42