多壁碳纳米管与铁纳米粒子进行绿色功能,通过固定床吸附来持续去除制药污染物:综合实验和机器学习方法
Heloisa P S Costa1, Mariana G Oliveira1, Emanuele D V Duarte2,3
1School of Chemical Engineering, Universidade Estadual de Campinas, Av. Albert Einstein 500, Campinas, São Paulo, Brazil.
概括
绿色功能化碳纳米管在连续流系统中有效地去除药物残留物,如洛萨坦和迪克洛芬甲. 这种可持续吸附剂在处理污染废水方面表现有前途,减轻了环境风险.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 传统的废水处理厂难以去除制药残留物,导致环境污染.
- 洛萨坦和迪克洛菲纳克是常见的制药污染物,对公众健康构成风险.
- 需要可持续和高效的吸附剂来有效地从废水中去除药物.
研究的目的:
- 通过在固定床柱中使用绿色功能化碳纳米管研究洛萨坦和狄克洛芬雅的连续吸附.
- 描述吸附剂材料并评估其适用于药品清除的适用性.
- 为了建模质量转移动力学,并评估不同模型的预测准确性.
主要方法:
- 绿色功能化碳纳米管进行了合成和特征化 (粒子大小,泽塔潜力,CHNS,XRF).
- 连续吸附实验是在固定床柱中进行的,流速和初始度各不相同.
- 使用修改剂量反应 (MDR) 和双位点扩散 (DualSD) 模型进行质量转移建模.
- 人工神经网络 (ANN) 建模用于预测系统性能.
主要成果:
- 较低的流量率 (0.2毫升/分钟) 提高了洛萨坦的保留率,并扩大了洛萨坦的质量转移区域.
- 较高的初始药物度导致了较早的突破,但增加了吸附能力.
- 双SD模型和ANN模型在预测吸附行为方面显示出高准确度 (基于参数统计数据的双SD优先).
结论:
- 绿色功能化碳纳米管是有效和可持续的吸附剂,用于在连续流中去除制药残留物.
- 该研究表明,在处理药物污染的废水方面,可扩展应用的潜力.
- 优化流速和了解质量转移动力学对于高效的废水处理至关重要.
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