使用通过球磨技术制备的氧化锌/天然沸石复合纳米粉末从水溶液中有效去除青霉素
Effective Removal of Penicillin from Aqueous Solution Using Zinc Oxide/Natural-Zeolite Composite Nano-Powders Prepared Via Ball Milling Technique.
作者信息
Khosravian Peyman, Ghashang Majid, Ghayoor Hamid
机构信息
Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran.
Department of Chemistry, Faculty of Sciences, Najafabad Branch, Islamic Azad University, Najafabad, Esfahan, Iran.
出版信息
Recent Pat Nanotechnol. 2017 Jul 10;11(2):154-164. doi: 10.2174/1872210511666170105141550.
BACKGROUND
The widespread entrance of antibiotics from the pharmaceuticals industry and human medication into aquatic environment increased concern over public health. Due to the importance of the antibiotics removal, a considerable amount of patents reported the conventional methods for the removal of antibiotics from the wastewaters. However, newly of patents reported improvements in the removal capacity. The present study focuses on the removal of Penicillin using a nanocomposite of zinc oxide/natural-Zeolite.
METHODS
A nano-composite of zinc oxide/natural-Zeolite was synthesized by mechanical method. The obtained microstructure was characterized by FE-SEM, XRD, EDX, and DLS techniques. The prepared nanocomposite is used for the removal of penicillin from aqueous solution.
RESULTS
Two different phases were identified in XRD patterns as hexagonal ZnO and orthorhombic Zeolite with the average crystal size of 86 and 141 nm respectively. The prepared nanocomposite consists of uniform particles with the mean diameter of near 91 nm. The prepared nanocomposite is used for the removal of penicillin from aqueous solution. It exhibited high removal performance in adsorption of penicillin antibiotic. The effects of penicillin concentration, catalyst amount, and pH on the adsorption were studied. The equilibrium adsorption data were analyzed using Langmuir, Temkin and Freundlich equations at room temperature. The Langmuir, Freundlich and Temkin constants were determined as -1.93, 410.2, and 3.87 respectively. The adsorption of Penicillin is followed from Freundlich (R2 = 0.979) equation. Adsorption kinetics followed the intra-particle diffusion model.
CONCLUSION
A high efficient procedure for the removal of penicillin was developed using ZnO/ natural-Zeolite nano-composite as useful catalysts.
背景
制药行业和人类用药中的抗生素大量进入水生环境，引发了对公众健康的更多关注。由于抗生素去除的重要性，大量专利报道了从废水中去除抗生素的传统方法。然而，新的专利报道了去除能力的改进。本研究重点关注使用氧化锌/天然沸石纳米复合材料去除青霉素。
方法
通过机械方法合成了氧化锌/天然沸石纳米复合材料。用FE-SEM、XRD、EDX和DLS技术对所得微观结构进行了表征。将制备的纳米复合材料用于从水溶液中去除青霉素。
结果
XRD图谱中鉴定出两种不同的相，分别为六方ZnO和正交沸石，平均晶体尺寸分别为86和141nm。制备的纳米复合材料由平均直径接近91nm的均匀颗粒组成。制备的纳米复合材料用于从水溶液中去除青霉素。它在吸附青霉素抗生素方面表现出高去除性能。研究了青霉素浓度、催化剂量和pH对吸附的影响。在室温下使用Langmuir、Temkin和Freundlich方程分析平衡吸附数据。Langmuir、Freundlich和Temkin常数分别确定为-1.93、410.2和3.87。青霉素的吸附遵循Freundlich（R2 = 0.979）方程。吸附动力学遵循颗粒内扩散模型。
结论
开发了一种使用ZnO/天然沸石纳米复合材料作为有效催化剂去除青霉素的高效方法。
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