Adsorption behaviour of estrogenic contaminant, estriol, using Saponin and Brij 35 modified clinoptilolite: equilibrium, kinetic, and thermodynamic studies plus fixed bed modelling

IF 0.5 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

International Journal of Environment and Pollution Pub Date : 2020-07-05 DOI:10.1504/ijep.2020.10030413

Reyhaneh Saadi, R. Fazaeli, L. Vafajoo, I. Naser, Ghodratollah Mohammadi

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引用次数: 3

Abstract

In this study, adsorption affinity of a raw clinoptilolite (RC) modified with Saponin (RC-Saponin) and Brij 35 (RC-Brij) surfactants was investigated to adsorb estriol (E3) from wastewater. The effect of pH, amount of sorbent, contact time, and temperature was evaluated. The results for RC and RC-Saponin confirmed that the Langmuir isotherm had an excellent agreement with the experimental data. However, for RC-Brij, the Freundlich model had excellent correlation with the experimental data. The results indicated that RC-Saponin was a more effective adsorbent compared to the two other samples. Moreover, the lumped technique was used to solve the bed equations, to predict the trend of the breakthrough curve, to obtain model parameters. The agreement between experimental data and kinetic models indicated that the intra-particle diffusion model had a better behaviour compared to other models. The thermodynamic parameters of Gibbs free energy, enthalpy, and entropy changes were obtained.

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利用皂素和Brij35改性斜发沸石对雌激素污染物雌三醇的吸附行为：平衡、动力学和热力学研究以及固定床模型

研究了皂素(RC-Saponin)和表面活性剂brij35 (RC-Brij)改性的斜沸石(RC)对废水中雌三醇(E3)的吸附亲和力。考察了pH值、吸附剂用量、接触时间和温度对吸附效果的影响。RC和RC-皂苷的实验结果证实了Langmuir等温线与实验数据的良好吻合。而对于RC-Brij来说，Freundlich模型与实验数据具有很好的相关性。结果表明，rc -皂苷具有较好的吸附剂效果。利用集总技术求解床层方程，预测突破曲线趋势，获得模型参数。实验数据与动力学模型的一致性表明，粒子内扩散模型比其他模型具有更好的性能。得到了吉布斯自由能、焓和熵变化的热力学参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Environment and Pollution 环境科学-环境科学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： IJEP provides an international forum in the field of environment and pollution and addresses early and medium-term challenges involving scientific prediction, modelling and assessment. It focuses on ground-breaking research in the science of environmental pollution, at the early scientific stage. It is one of three key journals which together offer complete coverage of environmental issues: IJETM focuses on technical/engineering, policy and management solutions for environmental problems, and IJGEnvI focuses on future, longer-term environmental scenarios, ecological economics, climate change and biodiversity.