Radiolytic degradation of carbaryl in aqueous solution by gamma-irradiation/H2O2 process

Dilek Şolpan; Khalid Elmamoun Ahmed Ibrahim; Abdalla Ahmed Elbashir; Masoomeh Mehrnia; Mustafa Mohamed Osman Ahmed; Olgun Güven

doi:10.1016/j.apradiso.2022.110210

Radiolytic degradation of carbaryl in aqueous solution by gamma-irradiation/H₂O₂ process

Appl Radiat Isot. 2022 Jun:184:110210. doi: 10.1016/j.apradiso.2022.110210. Epub 2022 Mar 19.

Authors

Dilek Şolpan¹, Khalid Elmamoun Ahmed Ibrahim², Abdalla Ahmed Elbashir³, Masoomeh Mehrnia⁴, Mustafa Mohamed Osman Ahmed², Olgun Güven⁴

Affiliations

¹ Hacettepe University, Department of Chemistry, 06800, Beytepe, Ankara, Turkey. Electronic address: solpan@hacettepe.edu.tr.
² Department of Radiation Processing, Sudan Atomic Energy Commission, 11111, P.O.Box:3001, Khartoum, Sudan.
³ University of Khartoum, Faculty of Science, Chemistry Department, P.O.Box 321, Khartoum, Sudan.
⁴ Hacettepe University, Department of Chemistry, 06800, Beytepe, Ankara, Turkey.

PMID: 35334343
DOI: 10.1016/j.apradiso.2022.110210

Abstract

In this study the synergetic effect of gamma-ray and hydrogen peroxide on the degradation of carbaryl in aqueous solution were investigated. Aqueous solution of carbaryl was exposed to five different irradiation doses in the presence and absence of hydrogen peroxide. The intermediate species and aliphatic acids formed during irradiation were determined by Gas chromatography-Mass spectrometer and Ion Chromatography, respectively. It was found that the gamma-irradiation accelerate the degradation process of carbaryl with and without hydrogen peroxide. The inconstancy in pH, dissolved oxygen and total acidity was evaluated before and after treatment by gamma. It was found that the pH was decline from 6.71 to 5, dissolved oxygen from 2.64 to 0.9 mgL^-1 and the total acidity was raised from 0.44 to 0.61 mgL^-1. The entirely degradation of Carbaryl takes place at 3.0 kGy and 9.6 mM hydrogen peroxide, H₂O₂. As a consequence, the possible degradation pathway was suggested.

Keywords: Advanced oxidation processes (AOPs); Carbaryl (CBL); Gamma/ hydrogen peroxide (H(2)O(2)); Hydrogen peroxide effect.

Publication types

Review

MeSH terms

Carbaryl*
Hydrogen Peroxide / chemistry
Oxidation-Reduction
Oxygen
Water / chemistry
Water Pollutants, Chemical* / radiation effects

Substances

Water Pollutants, Chemical
Water
Hydrogen Peroxide
Carbaryl
Oxygen