Photocatalytic efficiency of molybdenum-doped zinc oxide nanoparticles in treating landfill leachate
Journal Title: Journal of Advances in Environmental Health Research (JAEHR) - Year 2019, Vol 7, Issue 1
Abstract
Among various techniques available for leachate treatment, nano-photocatalytic-based techniques have been considered as efficient. The photocatalytic leachate treatment using nanoparticles of zinc oxide doped with molybdenum oxide was performed in the presence of sunlight at a laboratory scale. The molybdenum oxide doped ZnO nanoparticles were synthesized. The properties of nanoparticle were analyzed by using FTIR, SEM, and XRD. Then the parameters such as pH (3, 5, 7, 9, & 11), concentration of nanoparticles (0.5, 1, 2 and 3 g/l), concentration of leachate with dilution (1:10, 1:25, 1:50 and 1:100), and contact time (15, 30, 45, 60, 90, & 120 min) were measured to determine the removal of COD and turbidity. The analysis indicated that nanoparticle size was appropriate and acceptable. Electron microscope images also showed that the nanoparticle shape was hexagonal. The optimum value of pH was 5. It was found that increasing the concentration of nanoparticles enhances the efficiency of the process, the concentration of nanoparticles from 0.5 to 2 g/l at 60 min of contact time, and the efficiency from 34.8 to 55.6%, and increasing in contact time decreases the COD and turbidity leachate. Enhancing the initial concentration of leachate reduces the treatment efficiency of landfill leachate.
Authors and Affiliations
Yahya Zandsalimi, Reza Rezaee, Esmail Ghahramani, Masoud Moradi
Keywords
Related Articles
- EP ID EP642532
- DOI 10.22102/JAEHR.2019.129825.1077
- Views 123
- Downloads 0
Reproductive health indicators of immature common carp exposed to municipal wastewater of Behbahan, Iran
Exogenous estrogens or pollutants with estrogen-like activity can induce vitellogenin (VTG) synthesis in male and juvenile fish, making this protein a useful indicator of chemicals that mimic estrogenic activity. The pur...
Patients satisfactory from outdoor and indoor environments of a training hospital
Respect to the design guidelines of building environments is a complex subject that associated with cultural and economic development of human societies. Therefore, accurately measuring users’ favorites for environment d...
Spatial distribution of groundwater quality around Hamedan municipal solid waste landfill, Iran
Municipal solid waste management is an essential part of urban services, which is often managed by local governments. The present study aimed to investigate the spatial variation of the groundwater quality factors in Ham...
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...
Application of experimental design approach for optimization of the photocatalytic degradation of humic substances in aqueous solution using immobilized ZnO nanoparticles
Degradation of humic substances in water is important due to its adverse effects on the environment and human health. The aim of this study was modeling and investigating the degradation of humic substances in water usin...