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标题：Focused Ion Beam Analysis of Banana Peel and Its Application for Arsenate Ion Removal
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作者：Jamil R. Memon ; G. Zuhra Memon ; Peter. J. Heard 等
期刊名称：Pakistan Journal of Analytical & Environmental Chemistry
印刷版ISSN：1996-918X
电子版ISSN：2221-5255
出版年度：2015
卷号：16
期号：1
页码：24-30
语种：English
出版社：National Centre of Excellence in Analytical Chemsitry
摘要：Banana peel,a common fruit waste,has been investigated for its ability to remove arsenate ions from ground water as a function of pH,contact time,and initial metal ion concentration. Focused ion beam (FIB) analysis revealed the internal morphology of the banana peels. Arsenate ions were entered into micropores of banana peel. pH was seen to have no effect on the sorption process. Retained species were eluted using 5 mL of 2 M H2SO4. The kinetics of sorption were observed to follow the pseudo first order rate equation. The sorption data followed Freundlich and D-R isotherms. The energy value obtained from the D-R isotherms indicated that the sorption was physical in nature for arsenate species. Our study has shown that banana peel has the ability to remove arsenate species from ground water samples..
关键词：Banana peel;Arsenate ions;Sorption;Kinetics;Adsorption isotherms