番石榴叶作为吸附剂去除水溶液中新出现的污染物环丙沙星

IF 1.2 Q3 MULTIDISCIPLINARY SCIENCES

Journal of Physical Science Pub Date : 2019-09-15 DOI:10.21315/jps2019.30.2.8

Chin Tay, S. Ong

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引用次数: 6

摘要

研究了番石榴叶粉(GLP)作为吸附剂去除环丙沙星(CIP)的可行性。在不同的实验条件下，研究了GLP去除CIP的效果。结果表明，吸附CIP的最佳pH为pH 4。初始阶段吸附趋势迅速，60 min内达到吸附平衡。随着初始CIP浓度的增加，CIP的吸收率降低。吸附动力学符合准二级动力学模型。采用场发射扫描电镜(FESEM)、原子力显微镜(AFM)和傅里叶变换红外(FTIR)分光光度法对GLP进行了表征。采用Langmuir和Freundlich等温模型描述了CIP在GLP上的平衡吸附数据。最大吸附量qm为232.56 mg g-1。通过Plackett-Burman设计，发现接触时间和pH是影响CIP吸附在GLP上的重要参数。

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Guava Leaves as Adsorbent for the Removal of Emerging Pollutant: Ciprofloxacin from Aqueous Solution

In this work, the feasibility of using guava leaves powder (GLP) as an adsorbent to remove ciprofloxacin (CIP) from aqueous solution was investigated. The effectiveness of GLP to remove CIP was studied under different experimental conditions. The optimum pH for the adsorption of CIP was found to be pH 4. The adsorption trend was rapid at the initial stage and equilibrium was achieved in 60 min. The percentage uptake of CIP decreased with increasing initial CIP concentration. The adsorption kinetics was found to conform well to the pseudo-second order kinetic model. Characterisation of GLP was carried out by using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and Fourier-transform infrared (FTIR) spectrophotometry. Both Langmuir and Freundlich isotherm models were applied to describe the equilibrium adsorption data of CIP onto GLP. The maximum adsorption capacity (qm) was found to be 232.56 mg g–1. By applying Plackett-Burman design, contact time and pH were found to be the influential parameters in affecting the uptake of CIP onto GLP.

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来源期刊

Journal of Physical Science Physics and Astronomy-Physics and Astronomy (all)

CiteScore

1.70

自引率

0.00%

发文量

期刊介绍： The aim of the journal is to disseminate latest scientific ideas and findings in the field of physical sciences among scientists in Malaysia and international regions. This journal is devoted to the publication of articles dealing with research works in Chemistry, Physics and Engineering. Review articles will also be considered. Manuscripts must be of scientific value and will be submitted to independent referees for review. Contributions must be written in English and must not have been published elsewhere.