Thermodynamic and aquatic photodegradation of herbicide butachlor
| Autor: | A. A. Mostafa, Sherif H. Abd-Alrahman, Z.H. Zidan, Monir M. Almaz, M.I. Abdel-Megeed, Aziza H Mohamady |
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| Rok vydání: | 2016 |
| Předmět: |
010401 analytical chemistry
Kinetics Ocean Engineering 02 engineering and technology Activation energy 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Pollution 0104 chemical sciences chemistry.chemical_compound Reaction rate constant chemistry Environmental chemistry Ultraviolet light Irradiation Chloroacetamide 0210 nano-technology Photodegradation Butachlor Water Science and Technology |
| Zdroj: | Desalination and Water Treatment. 57:23808-23813 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2015.1136240 |
| Popis: | Thermodynamic and aquatic photodegradation kinetics of a chloroacetamide herbicide (butachlor), subjected to irradiation of ultraviolet light under different temperatures (20–50°C), were investigated. Butachlor residues were determined using gas chromatography coupled with micro-electron capture detector (GC-ECD). The results showed that photochemical reaction of butachlor in water under UV light followed the first order kinetic equation, and the photodegradation efficiency was increased with temperature in the range of 20–50°C. Photodegradation rate constants of butachlor exposed to temperatures of 20, 30, 40, and 50°C were 0.004, 0.007, 0.041, and 0.12 h−1 and their half lives were 175, 100, 17.5, and 5.8 h, respectively. Activation thermodynamic parameters were determined for the degradation process. The reaction activation energy was calculated to be 11.7 kJ mol−1. Results proved that the use of UV irradiation with increasing temperature is a good application to eliminate butachlor from contam... |
| Databáze: | OpenAIRE |
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