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Renewable Tb/Eu-Loaded Garlic Peels for Enhanced Adsorption of Enrofloxacin: Kinetics, Isotherms, Thermodynamics, and Mechanism
ACS Sustainable Chemistry & Engineering ( IF 8.4 ) Pub Date : 2018-10-02 00:00:00 , DOI: 10.1021/acssuschemeng.8b03739
Yanjun Zhao , Wenhui Li , Ziyan Liu 1 , Jiemin Liu , Lin Zhu , Xintong Liu , Kai Huang
Affiliation  

Environmentally friendly terbium, europium, and terbium/europium-loaded garlic peels ([email protected], [email protected], and Tb/[email protected]) were successfully synthesized and evaluated as biosorbents for the extraction of enrofloxacin (ENR) from aqueous solutions. Notably, it was found that the adsorption capacity of Tb/[email protected] (769 mg g–1) for enrofloxacin was significantly enhanced compared with unloaded GP (29.8 mg g–1) and was superior over [email protected] (580 mg g–1) and [email protected] (421 mg g–1). The high adsorption capacity of Tb/[email protected] reflected the efficiency and cost effectiveness of the adsorption process. In order to gain insight into the modification method and adsorption behaviors, [email protected], [email protected], and Tb/[email protected] were fully characterized, and their adsorption kinetics, isotherms, and thermodynamics were investigated. Additionally, Tb/[email protected] was found to be highly efficient at pH values ranging from 6.0 to 8.0. Besides, ultrapure water containing 5% ammonia could elute 98.1 ± 1.5% of the absorbed ENR from Tb/[email protected], and the reusability and regeneration test also revealed the sustainability of Tb/[email protected] Moreover, XPS analysis confirmed ligand exchange between the hydroxyl and the fluorine group of enrofloxacin might be the main mechanism in the adsorption process. This work demonstrated loading terbium and europium on agricultural byproduct could be a potential method for developing cost-effective and eco-friendly biosorbents for fluoroquinolones.

中文翻译:

可再生的Tb / Eu大蒜皮增强恩诺沙星的吸附:动力学,等温线,热力学和机理

成功合成了环保的b,euro和负载ter / eur的大蒜皮([电子邮件保护],[电子邮件保护]和Tb / [电子邮件保护]),并被评估为从水溶液中提取恩诺沙星(ENR)的生物吸附剂。解决方案。值得注意的是,发现与未加载的GP(29.8 mg g –1)相比,Tb / [电子邮件保护的](769 mg g –1)对恩诺沙星的吸附能力显着增强,并且优于[email保护的](580 mg)。 g –1)和[电子邮件保护](421 mg g –1)。Tb / [受电子邮件保护]的高吸附容量反映了吸附过程的效率和成本效益。为了深入了解改性方法和吸附行为,对[电子邮件保护],[电子邮件保护]和Tb / [电子邮件保护]进行了充分表征,并研究了它们的吸附动力学,等温线和热力学。另外,发现Tb / [受电子邮件保护]在pH值为6.0至8.0的情况下非常有效。此外,含5%氨的超纯水可以从Tb / [受电子邮件保护]中洗脱掉所吸收的ENR的98.1±1.5%,并且可重复使用性和再生测试也揭示了Tb / [受电子邮件保护]的可持续性。XPS分析证实恩诺沙星的羟基和氟基团之间的配体交换可能是吸附过程中的主要机理。这项工作表明,在农业副产品上装载ter和product可能是开发成本效益高且对环境友好的氟喹诺酮类生物吸附剂的潜在方法。
更新日期:2018-10-02
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