Radiolytic degradation of carbofuran by using gamma and gamma/hydrogen peroxide processes

• Published in: Radiation physics and chemistry (Oxford, England : 1993) Vol. 153; pp. 251 - 257
• Main Authors: Ahmed Ibrahim, Khalid Elmamoun, Elbashir, Abdalla Ahmed, Osman Ahmed, Mustafa Mohamed, Şolpan, Dilek
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.2018; Elsevier BV
• Subjects: Acidity; Advanced oxidation processes (AOP's); Aliphatic compounds; Aqueous solutions; Carbofuran (CBF); Chromatography; Degradation; Effect of hydrogen peroxide; Gamma rays; Gamma/H2O2; Gas chromatography; Hydrogen peroxide; Irradiation; Mass spectrometry; Pesticides; Advanced oxidation processes (AOP's); Effect of hydrogen peroxide; Carbofuran (CBF); Gamma/H2O2
• ISSN: 0969-806X; 1879-0895
• DOI: 10.1016/j.radphyschem.2018.10.014

In this study, different gamma-irradiation doses in the range from (0.25–3.0 kGy) were used with and without H2O2 to remove carbofuran (CBF) from aqueous solution The Gas chromatography-Mass spectrometry and ion chromatography were used to determine the intermediates, by-products, aliphatic acids, and inorganic species. The amount of formaldehyde were followed by UV–visible spectrophotometer. The change in dissolved oxygen, total acidity and pH was measured before and after gamma-irradiation. It was found that the dissolved oxygen was decreased from 3.42 to 0.9 mg L−1, pH from 7.20 to 3.75 and the total acidity was increased from 0.30 to 0.98 mg L−1. The completely degradation of carbofuran takes place at 3.0 kGy. As a consequence, the possible degradation pathway was suggested. •Degradation of carbofuran in aqueous solutions by using gamma and gamma/H2O2 was evaluated.•The intermediates, aliphatic acids, ions, and final product(s) was determined by GC–MS and IC.•The degradation pathway was proposed.•Investigation of synergic effect for gamma and gamma/H2O2 process.