Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye

Ljiljana Matović; Radojka Vujasin; Ksenija Kumrić; Aleksandar Devečerski; Yi-Nan Wu; Daniel Manaye Kabtamu; Marija Mirković; Mia Omerašević; Djordje Petrović

doi:10.1016/j.jhazmat.2020.124922

Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye

J Hazard Mater. 2021 Apr 15:408:124922. doi: 10.1016/j.jhazmat.2020.124922. Epub 2020 Dec 28.

Authors

Ljiljana Matović¹, Radojka Vujasin², Ksenija Kumrić², Aleksandar Devečerski², Yi-Nan Wu³, Daniel Manaye Kabtamu⁴, Marija Mirković², Mia Omerašević², Djordje Petrović²

Affiliations

¹ Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia; College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address: ljiljam@vin.bg.ac.rs.
² Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia.
³ College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China. Electronic address: 51n@tongji.edu.cn.
⁴ College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China; Department of Chemistry, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia.

PMID: 33383450
DOI: 10.1016/j.jhazmat.2020.124922

Abstract

Enhanced degradation of organic dye was achieved using two different kinds of waste materials: waste tire granules and spent sealed radioactive sources. Waste tire granules were used as raw material for the production of waste tire char (WTC), which was further utilized as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. The spent radioactive sources were radiographic sealed sources that originate from the industry which generate the high energy radiation. Methylene Blue (MB) was used as an organic model compound. Synthesized WTC has turbostratic structure, irregular shaped particles and developed mesoporous surface. Complete degradation of 0.02 dm³ of 100 mg dm^-3 MB solution, having WTC dose of 1.25 g dm^-3, was achieved with delivered doze of only 60 Gy. The applied doses were 100 times smaller than those presented in the literature. Degradation pathway was determined: OH radicals that originate from radiolysis of water and from the surface of WTC played the crucial role in the radiocatalytic degradation of MB. Breakage of the aromatic ring of MB appeared by the scission of the double C‒S⁺˭C bond as a result of the attack of OH species on adsorbed and electronically reorganized MB molecule.

Keywords: Methylene blue degradation; Radiolysis; Spent sealed radioactive source; Synergism; Waste tire char.

Publication types

Research Support, Non-U.S. Gov't