Photocatalytic degradation of phenol in water solutions using zno nanoparticles immobilized on glass
Journal Title: Journal of Advances in Environmental Health Research (JAEHR) - Year 2015, Vol 3, Issue 3
Abstract
Phenol and its derivatives are pollutant compounds that are present in the wastewater of many industries. The objective of this study was to investigate the photocatalytic degradation of phenol in water containing various concentrations of sodium chloride. A laboratory study was conducted to evaluate the performance of UV/ZnO process on the efficiency of phenol removal from saline water with ZnO nanoparticles fixed on glass using UVC radiation. The effects of pH, contact time, sodium chloride concentrations, and the initial concentration of phenol on the photocatalytic removal of phenol were studied. The photocatalytic degradation of phenol showed suitable efficiency under the absence of sodium chloride (100% phenol removal at a concentration of 5 mg/l and during 120 minutes). However, the removal efficiency decreased in the presence of a concentration of 30 g/l of sodium chloride (92.4%). Additionally, phenol photocatalytic degradation efficiency decreased as a result of an increase in the initial concentration of phenol and the efficiency increased as a result of a decrease in pH (pH = 3). The results obtained from this study indicated that ZnO nanoparticles or ultraviolet rays alone cannot remove phenol fully and have a much lower efficiency in comparison with the photocatalytic degradation of phenol. Thus, the photocatalytic degradation process (UV/ZnO) is an effective method of removing phenol from saline water solutions.
Authors and Affiliations
Sedigheh Saeedi, Hatam Godini, Mohammad Almasian, Ghodratollah Shams-Khorramabadi, Bahram Kamarehie, Parvin Mostafaie, Fatemeh Taheri
Keywords
Related Articles
- EP ID EP420676
- DOI 10.22102/JAEHR.2015.40204
- Views 115
- Downloads 0
Pollution: Treating environmental toxins
Maczulak AE. Pollution: Treating Environmental Toxins. New York, NY: Infobase Publishing; 2010. p. x+232. ISBN: 978-1-4381-2633-3
Chemical composition of indoor ash residues
The ash content formed after burning of materials in indoor may be harmful to environment on dumping due to high ionic and metallic concentration. Therefore, the chemical composition of various indoor ash residues derive...
Spatial distribution and analysis of heavy metal pollution in urban roadside dusts from Sanandaj, Iran
Industrial activities and high traffic density are the most important heavy metal pollution sources in urban areas. Roadside dust created by atmospheric deposition can be one of the best indicators for heavy metal contam...
Healthcare waste management and practices: A case study in Kodagu District, Karnataka, India
Inappropriate handling and disposal practices of healthcare waste (HCW) at healthcare centers are significantly increasing health and environmental hazards. This paper summarizes the existing situation of HCW handling an...
Removal of hexavalent chromium from aqueous solution using canola biomass: Isotherms and kinetics studies
The removing of hexavalent chromium from wastewater or decreasing its chromium (VI) content up to the permitted levels is important due to its non-biodegradation, bioaccumulation, and cancer-causing and toxic effects. In...