Volume 19, Number 3 (October 2012)                   J Birjand Univ Med Sci. 2012, 19(3): 277-285 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Asadi A, Dehghani M H, Rastkari N, Nasseri S, Mahvi A H. Comparison of potentiality of Zinc oxide nanoparticles and hydrogen peroxide in removal of hexavalent chromium from polluted water. J Birjand Univ Med Sci.. 2012; 19 (3) :277-285
URL: http://journal.bums.ac.ir/article-1-1020-en.html

1- Msc of Environmental Health Engineering Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
2- associated professor Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Solid Waste, Tehran University of Medical Sciences, Tehran, Iran. , dehghanihadi@yahoo.com
3- Assistant professor Institute for Environmental Research, Center for Air Pollution, Tehran University of Medical Sciences, Tehran, Iran.
4- Professor Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Water Quality, Tehran University of Medical Sciences, Tehran, Iran.
5- Assistant professor Department of Environmental Health Engineering, School of Public Health, Institute for Environmental Research, Center for Solid Waste, Tehran University of Medical Sciences, Tehran, Iran.
Abstract:   (13964 Views)
Background and Aim: Common sources of chromium in wastewater are electroplating and leather industries. Thus, the present study aimed at investigating and comparing between chemical (H2O2) method and nano-photocatalytical(UV/ZnO) method in removing of Cr(VI) from polluted water. Materials and Methods: In this experimental-analytical study, effective factors on reduction process such as ZnO (0.05–0.15 g/L) , H2O2 (0.5-1.5 mol/L) for UV/H2O2 process and pH(5-9) were investigated. The initial concentration of the substrate was taken 0.1-15mg/L.Stock chromate (V:6) solution was prepared through dissolving Potassium dichromate (K2Cr2O7) in originally distilled water. Residual concentrations of Cr(VI) were measured spectrophotometrically at 540nm. Results: The results indicated that with increasing reduction agent concentration and decreasing pH, the removing efficiency increased. For low initial concentrations of Cr(VI) photocatalytic process was more effective than the chemical one, but for high initial concentration the result was the opposite.In the present study, using of these procedures was applied to natural water samples. Conclusion: The results of this study indicated that H2O2 as a cheap and available agent and also UV/ZnO, as a friendly and without residual environmental treatment process, can be used for effective reduction of Cr(VI) to yield Cr(III).
Full-Text [PDF 348 kb]   (1822 Downloads)    
Type of Study: Original Article | Subject: Environmental Health
Received: 2012/01/13 | Accepted: 2012/05/30 | Published: 2016/03/10

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2015 All Rights Reserved | Journal of Birjand University of Medical Sciences

Designed & Developed by : Yektaweb