期刊
ENVIRONMENTAL TECHNOLOGY & INNOVATION
卷 23, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.eti.2021.101761
关键词
Optimization; ANN; RSM; Photodegradation; Ciprofloxacin; TOC
资金
- Addis Ababa Institute of Technology, Addis Ababa University
In this study, visible light active N-doped TiO2-SiO2 nanoparticles were synthesized for the photodegradation and mineralization of ciprofloxacin. The maximum CIP degradation efficiency of 88.45% and TOC removal efficiency of 75.18% were achieved under the optimum operating parameters. The adsorption isotherm and chemical kinetic studies were best fitted by Langmuir isotherm and pseudo-second-order kinetic models, respectively.
Antibiotics such as ciprofloxacin are very difficult to control or eliminate due to higher production and consumption related to rapid population growth. In conventional water treatment plants ciprofloxacin is not readily biodegradable but only moves from one phase to another. In the present study, we have synthesized visible light active N-doped TiO2-SiO2 nanoparticles by ultrasonic-assisted sol-gel process and investigated the performance on the photodegradation and mineralization of ciprofloxacin. The effects of operation parameters such as solution pH, irradiation time , catalyst dose and initial contaminant concentration were studied in the ranges 6 to 10, 60 to 120 min, 1 to 3 g/L and 5 to 15 mg/L, respectively. A combined Response Surface Methodology (RSM) and Artificial Neural Network (ANN) approach was used to obtain maximum CIP degradation and TOC removal efficiency. Accordingly, an optimum CIP degradation efficiency of 88.45 % and TOC removal efficiency of 75.18 % were estimated at the optimum operating parameters of solution pH of 5.45, irradiation time of 109.4 min, catalyst dose 2.44 g/L. at a targeted initial contaminant concentration of 10 mg/L with 0.89% desirability. Adsorption isotherm and chemical kinetic studies best fitted to Langmuir isotherm and pseudo-second-order kinetic models, respectively. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据