A generalized kinetic model for electro-assisted catalytic wet air oxidation of triclosan on Ni@NiO/graphite electrode
| Autor: | Xiao-Hui Hong, Xiong-Fei Tao, Min Sun, Lin-Feng Zhai, Shaobin Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Applied Mathematics
General Chemical Engineering Kinetics Non-blocking I/O 02 engineering and technology General Chemistry Mineralization (soil science) 021001 nanoscience & nanotechnology 7. Clean energy 6. Clean water Industrial and Manufacturing Engineering Triclosan Catalysis chemistry.chemical_compound 020401 chemical engineering chemistry Chemical engineering Electrode Specific energy Wet oxidation 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Chemical Engineering Science. 222:115696 |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2020.115696 |
| Popis: | Electro-assisted catalytic wet air oxidation (ECWAO) is an efficient technique for wastewater treatment under ambient condition. In this work, the mineralization kinetics of triclosan (TCS) in an ECWAO process with Ni@NiO/graphite-felt (GF) electrode is studied. The TCS mineralization follows a pseudo-first order kinetics in the ECWAO process. A general kinetic model, based on the depletion of total organic carbon (TOC) as a lumped parameter, is developed. Such a kinetic model suggests the optimized ECWAO operating conditions of initial concentration of TOC at 40 mg L−1, applied current at 25 mA, and temperature at 308 K. In addition, the ECWAO is also effective for the treatment of biosphenol A (BPA) and sulfamethoxazole (SMX). Under the optimal conditions, TCS, BPA and SMX are mineralized by 92.9 ± 1.5, 90.8 ± 1.7 and 90.6 ± 1.0% within 120 min, with specific energy consumptions (SECs) of 2.2 ± 0.3, 1.4 ± 0.5, and 2.8 ± 0.6 kW h kg-TOC−1, respectively. |
| Databáze: | OpenAIRE |
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