Synthesis, characterization and As(III) adsorption behavior of β-cyclodextrin modified hydrous ferric oxide

被引：16

作者：

Saha, Indranil ^{[1
,4
]}

Gupta, Kaushik ^{[1
]}

Chakraborty, Sudipta ^{[2
]}

Chatterjee, Debashis ^{[3
]}

Ghosh, Uday Chand ^{[1
]}

机构：

[1] Presidency Univ, Dept Chem & Biochem, Kolkata 700073, India

[2] Kanchrapara Coll, Dept Chem, Kanchrapara 743145, India

[3] Univ Kalyani, Dept Chem Analyt, Nadia 741235, W Bengal, India

[4] Sripat Singh Coll, Dept Chem, Jiaganj 742123, Murshidabad, India

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 04期

关键词：

Arsenic; Adsorption; beta-cyclodextrin; Hydrous ferric oxide; Groundwater; BINARY MIXED-OXIDE; ARSENIC(III) SORPTION; AQUEOUS-SOLUTION; REMOVAL; NANOPARTICLES; SPECIATION; WATER; THERMODYNAMICS; COMPLEXATION; GROUNDWATER;

D O I：

10.1016/j.jiec.2013.08.026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study investigates the adsorption of As(III) on beta-cyclodextrin modified hydrous ferric oxide (HCC). This is characterized by XRD, FESEM, AFM, XPS, BET, surface site concentration and FTIR. The modification of hydrous ferric oxide (HFO) surface by beta-cyclodextrin provides ample -OH groups which in turn increase As(III) adsorption on HCC compared to HFO. The adsorption remains almost constant in pH range 3-8 which decreases at higher pH (>8) and followed monolayer and pseudo first order kinetics. It is spontaneous at 303 K with increasing entropy and decreasing enthalpy. Thus HCC is found to be more efficient adsorbent than HFO. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：1741 / 1751

页数：11

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