Graphene oxide/magnesium oxide nanocomposite: A novel catalyst for ozonation of phenol from wastewater

Date

2017-01-01

Author

Heidarizad, Mahdi
Şengör, Sema Sevinç

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

104
views

0
downloads

Catalytic ozonation is a promising advanced oxidation technique for the removal of contaminants from water and wastewater. Graphene oxide (GO) is an oxidized derivative of graphene which contains epoxide, hydroxyl, and carboxyl groups with high surface area, and is being recently used for effective adsorption of pollutants in aquatic environments. In our previous work, we modified GO with magnesium oxide (MgO) and demonstrated the high-rate adsorption of methylene blue (MB) by the synthesized nanocomposite (NC). In this study, our synthesized NC is applied as a catalyst for catalytic ozonation of phenol in a laboratory scale batch reactor. The results showed that the catalytic ozonation significantly improved the mineralization of phenol compared to that of ozonation without the catalyst. The impact of experimental variables on oxidation of phenol, particularly GO/MgO NC dosage and reaction time is investigated. A possible mechanism for the catalytic ozonation of phenol is also proposed. Our results show promising application of the proposed technology for the removal of various organic contaminants from wastewater.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85021412234&origin=inward
https://hdl.handle.net/11511/93659

DOI

https://doi.org/10.1061/9780784480595.018

Conference Name

17th World Environmental and Water Resources Congress 2017

Collections

Department of Environmental Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Diesel Oil Degradation Potential of a Bacterium Inhabiting Petroleum Hydrocarbon Contaminated Surface Waters and Characterization of Its Emulsification Ability Onur, Gozde; Yılmaz, Fadime; İçgen, Bülent (Wiley, 2015-07-01) Degradation of poorly water soluble hydrocarbons, like n-alkanes and polycyclic aromatic hydrocarbons are challenged by some bacteria through emulsification of hydrocarbons by producing biosurfactants. In diesel oil bioremediation, diesel oil degrading and surfactant producing bacteria are used to eliminate these pollutants from contaminated waters. Therefore, identifying and characterizing bacteria capable of producing surfactant and degrading diesel oil are pivotal. In this study, bacteria isolated from h...
Homogeneous and heterogeneous catalytic ozonation of pulp bleaching effluent Balcioglu, Isil Akmehmet; Moral, Cigdem Kivilcimndan (2008-08-31) Catalytic ozonation is a promising treatment method for both water and wastewater. In this study, in order to increase the biodegradability of bleaching wastewater from an integrated pulp- and -paper production plant, granulated activated carbon-(GAC), iron-(Fe2+) and manganese-(Mn2+) ion-catalyzed ozonation processes were used as a pre-treatment process. The effects of the catalyst concentration and the initial pH (pH(i)) of wastewater on the treatment efficiency of processes were investigated. Although me...
Water soluble laurate-stabilized ruthenium(0) nanoclusters catalyst for hydrogen generation from the hydrolysis of ammonia-borane: High activity and long lifetime DURAP, FEYYAZ; Zahmakiran, Mehmet; Özkar, Saim (2009-09-01) The simplest amine-borane, considered as solid hydrogen storage material, ammonia-borane (H(3)NBH(3)) can release hydrogen gas upon catalytic hydrolysis under mild conditions. Herein, we report the preparation of a novel catalyst, water dispersible laurate-stabilized ruthenium(0) nanoclusters from the dimethylamine-borane reduction of ruthenium(III) chloride in sodium laurate solution at room temperature. The ruthenium nanoclusters in average size of 2.6 +/- 1.2 nm were isolated from the solution and well c...
Dihydroxylation of olefins catalyzed by zeolite-confined osmium(0) nanoclusters: an efficient and reusable method for the preparation of 1,2-cis-diols Metin, Onder; Alp, Nurdan Alcan; Akbayrak, Serdar; Bicer, Abdullah; GÜLTEKİN, Mehmet Serdar; Özkar, Saim; Bozkaya, Ugur (2012-01-01) Addressed herein is a novel, eco-friendly, recoverable, reusable and bottleable catalytic system developed for the dihydroxylation of various olefins yielding 1,2-cis-diols. In our protocol, zeolite-confined osmium (0) nanoclusters (zeolite-Os-0) are used as reusable catalyst and H2O2 served as a co-oxidant. Zeolite-Os-0 are found to be highly efficient and selective catalysts for the dihydroxylation of a wide range olefins in an aqueous acetone mixture at room temperature. In all of the olefins surveyed, t...
Surfactants as hydrate promoters? Karaaslan, U; Parlaktuna, Mahmut (2000-09-01) Natural gas hydrates from different types and concentrations of surfactant solutions were produced in a high-pressure cell. An anionic, a cationic, and a nonionic surfactant were used to prepare different concentration of surfactant solutions from deionized water. Although the thermodynamics of hydrate formation from a gas mixture is not affected with the existence of surfactants in the environment, there is an appreciable effect of type and concentration of surfactant on hydrate formation rate. The hydrate...

Citation Formats

M. Heidarizad and S. S. Şengör, “Graphene oxide/magnesium oxide nanocomposite: A novel catalyst for ozonation of phenol from wastewater,” presented at the 17th World Environmental and Water Resources Congress 2017, California, Amerika Birleşik Devletleri, 2017, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85021412234&origin=inward.