Search Results

1 - 10 of 63 items :

  • "advanced oxidation process" x
Clear All

.B.A. (2011). Commercial laundry water characterization for anaerobic treatment in fluidized bed reactor. X Oficina e Seminario Latino Americano de Digestão Anaeróbia (DAAL), Ouro Preto. Canonica, S., Meunier, L. & von Gunten, U. (2008). Phototransformation of selected pharmaceuticals during UV treatment of drinking water, Water Research , 42, 1–2, pp. 121–128. CESIO. (2014). CESIO news. European Committee of Organic Surfactants and their Intermediates, Issue 15, September 2014. Chidambara, C.B. & Quen, H.L. (2005). Advanced oxidation processes for wastewater treatment

, C., Brussino, M. C., Pramauro, E., Savarino, P., Augugliaro, V., Marci, G., & Palmisano, L. (2001). Photocatalytic degradation of Acid Blue 80 in aqueous solutions containing TiO 2 suspensions. Environ. Sci. Technol ., 35 (5), 971–976. 8. Sugiarto, A. T., Ito, S., Ohshima, T., & Skalny, J. D. (2003). Oxidative decolouration of dyes by pulsed discharge plasma in water. J. Electrostat ., 58 (1/2), 135–145. 9. Kalra, S. S., Mohan, S., Sinha, A., & Singh, G. (2011). Advanced oxidation processes for treatment of textile and dye wastewater: A review. In 2nd

References [1] Bergendahl, J., & O’Shaughnessy, J. (2004). Applications of advanced oxidation for wastewater treatment, International Business and Education Conference “A Focus on Water Management”, Worcester Polytechnic Institute, 2004. [2] Gau, S.H., & Chang, F.S. (1996). Improved Fenton method to remove recalcitrant organics in landfill leachate, Wat. Sci. Techn. , 34. [3] Lopes do Morais J., & Zamora, P.P. (2005). Use of advanced oxidation processes to improve the biodegradability of mature landfill leachates, J. Haz. Mat. , B123. [4] Naumczyk, J

: A review of sources, environmental levels, and potential human health impacts. Environ Int 2012;42:91-9. doi: 10.1016/j.envint.2011.04.010 18. Klavarioti M, Mantzavinos D, Kassinos D. Removal of residual pharmaceuticals from aqueous systems by advanced oxidation processes. Environ Int 2009;35:402-17. doi: 10.1016/j.envint.2008.07.009 19. Andreozzi R, Caprio V, Marotta R, Radovnikovic A. Ozonation and H2O2/UV treatment of clofibric acid in water: a kinetic investigation. J Hazard Mater 2003;103:233-46. PMID: 14573342 20. Neamtu M, Frimmel FH. Degradation of

., Gryglewicz, T., Sładki, A. & Kuryatto, M. (1990). Wastewater treatment RISTON III, Zakład Elektroniki Górniczej, Tychy, pp. 1-8. (in Polish) Keller, R. & Goosey, M. (1999). The printed circuit board industry an environmental best practice guide, PCIF, London 1999. Parson, S. (2004). Advanced Oxidation Processes for Water and Wastewater Treatment, IWA Publishing, London 2004. PN-EN ISO 10523:2012 Water Quality. Determination of pH. PN-EN ISO 7027-1:2016-09 Water Quality. Determination of turbidity. PN-ISO 15705:2005 Water Quality. Determination of the Chemical Oxygen

(12), 173-183. 22. Rice, R. (1996). Applications of ozone for industrial wastewater treatment. A review. Ozone-Sci. Eng., 18(6), 477-515. 23. Yao, C. C. D., & Haag, W. R. (1991). Rate constants for direct reactions of ozone with several drinking water contaminants. Water Res., 25(7), 761-773. 24. Hart, E. J., Sehested, K., Bjergbakke, E., & Holcman, J. (1987). Gamma-ray initiated decomposition of aqueous ozone solution. Radiat. Phys. Chem., 29, 399-403. 25. Hoigné, J. (1998). Chemistry of aqueous ozone and transformation of pollutants by ozonation and advanced oxidation

Photocatalytic degradation of malachite green dye using doped and undoped ZnS nanoparticles

In the present study, ZnS nanoparticles were prepared using the mechanochemical method. The ZnS nanoparticles prepared were doped with different concentrations of manganese using metal acetate and manganese acetate by mechanochemical method. The as-prepared particles were characterized using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The photocatalytic activity of the prepared nanoparticles samples, in the photocatalytic degradation of malachite green, had been investigated. The nanoparticles were photo induced, generating hole transfer for photocatalytic activity. The photodegradation of malachite green was observed at different pH (2-5) values, dye concentrations (10-100mg/L) and amount of ZnS nanoparticles (1-2.5 g/L). About 95% degradation of dye was observed on the addition of 2 g/L ZnS in 50 mg/L dye solution after 90 minutes illumination at 125 W. Degradation has been increased up to 99% using UV/nanoparticles/H2O2 (50 mL/L) combined process. The degradation efficiency was also compared using Mn doped ZnS nanoparticles (Zn1-x MnxS, where x = 0.01, 0.22 and 0.3). Maximum of 97% degradation was observed with 0.01% concentration of Mn. Kinetics study and performance of UV/ZnS, UV/ZnS/H2O2, UV/doped ZnS processes were evaluated to compare the efficiency of different processes.

Abstract

In this work, the advanced decomposition of organic dyestuffs used in food and textile industry, such as Malachite Green (MG), was investigated in the presence of a cationic catalyst montmorillonite (P1-PILCs) prepared by ion-exchange method. The obtained material was characterized by BET, FTIR and XRD. The effects of different variables such as: catalyst dose, catalyst/ozone dose, ozonation time and the pH on the mineralization of the synthetic dye were studied and optimal experimental conditions were ascertained. Compared with simple ozonation, the introduction of the catalyst greatly reduces the duration of the process to reach over 95% yield from 110 minutes to some seconds.

). Degradation of carbofuran by using ozone, UV radiation and advanced oxidation processes. J. Hazard. Mat. 89, 51-65. 5. Derbalah, A.S., Nakatani, N. & Sakugawa, H. (2004). Photocatalytic removal of fenitrothion in pure and natural waters by photo-Fenton reaction. Chemosphere 57, 635-644. DOI: 10.1016/j. 6. Evgenidou, E., Konstantinou, I., Fytianos, K. & Poulios, I. (2007). Oxidation of tow organophosphorus insecticides by the photo-assisted Fenton reaction. Wat. Res. 41, 2015-2027. DOI: 10.1016/j.watres.2007.01.027. 7. Derbalah, A.S. (2009). Chemical remediation of

.2007.07.013. 4. Lasram, M.M., Annabi, A.B., El-Elj, N., Selmi, S., Kamoun, A., El-Fazaa, S. & Gharbi, N. (2009). Metabolic disorders of acute exposure to malathion in adult wistar rats. J. Hazard. Mat. 163, 1052-1055. DOI:10.1016/j.jhazmat.2008.07.059. 5. Derbalah, A.S. (2009). Chemical remediation of carbofuran insecticide in aquatic system by advanced oxidation processes . J. Agric. Res. Kafr Elsheikh Univ . 35 (1), 308-327. 6. Shawaqfeh, A.T. & Al Momani, F.A. (2010). Photocatalytic treatment of water soluble pesticide by advanced oxidation technologies using UV