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木苹果壳（Feronia acidissima）粉末生物吸附剂的研制及其对水溶液中Cd(II)的去除应用。

Development of wood apple shell (Feronia acidissima) powder biosorbent and its application for the removal of Cd(II) from aqueous solution.

作者信息

Suresh Ch, Reddy D Harikisore Kumar, Harinath Yapati, Naik B Ramesh, Seshaiah K, Reddy Annareddy V Ramana

机构信息

Inorganic and Analytical Chemistry Division, Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, India.

Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.

出版信息

ScientificWorldJournal. 2014;2014:154809. doi: 10.1155/2014/154809. Epub 2014 Apr 7.

DOI:10.1155/2014/154809
PMID:24977180
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3996990/
Abstract

A biosorbent was prepared by using wood apple shell (WAS) powder and studied its application for the removal of Cd(II) from aqueous solution by a batch method. The biosorbent was characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and elemental analysis. WAS is principally made up of lignin and cellulose, containing functional groups such as alcoholic, ketonic, and carboxylic groups which can be involved in complexation reactions with Cd(II). The effect of experimental parameters like initial pH, contact time, metal ion concentration, and sorbent dose on adsorption was investigated. The optimum pH for biosorption of Cd(II) onto WAS was found to be pH 5.0 and the quantitative removal of Cd(II) ions was achieved in 30 min. The kinetic study showed that the biosorption process followed the pseudo-second-order rate. Experimental data were analyzed by Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models. Desorption studies were carried out using HCl solution.

摘要

采用木苹果壳（WAS）粉末制备了一种生物吸附剂，并通过分批法研究了其对水溶液中Cd（II）的去除效果。通过红外光谱、X射线衍射、扫描电子显微镜和元素分析对该生物吸附剂进行了表征。WAS主要由木质素和纤维素组成，含有醇基、酮基和羧基等官能团，这些官能团可参与与Cd（II）的络合反应。研究了初始pH值、接触时间、金属离子浓度和吸附剂剂量等实验参数对吸附的影响。发现Cd（II）在WAS上生物吸附的最佳pH值为5.0，30分钟内实现了Cd（II）离子的定量去除。动力学研究表明，生物吸附过程遵循准二级速率。实验数据采用Langmuir、Freundlich和Dubinin-Radushkevich等温线模型进行分析。使用HCl溶液进行了解吸研究。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d980/3996990/4a89b43d41fd/TSWJ2014-154809.008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d980/3996990/dcab8d38cfc3/TSWJ2014-154809.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d980/3996990/88d96a2584eb/TSWJ2014-154809.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d980/3996990/15555450c287/TSWJ2014-154809.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d980/3996990/4a89b43d41fd/TSWJ2014-154809.008.jpg

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