Heavy metal ions removal from aqueous media by modified magnetic mesoporous silica MCM-48

被引：131

作者：

Anbia, Mansoor ^{[1
]}

Kargosha, Kazem ^{[2
]}

Khoshbooei, Sanaz ^{[3
]}

机构：

[1] Iran Univ Sci & Technol, Res Lab Nanoporous Mat, Fac Chem, Tehran 16846, Iran

[2] Chem & Chem Engn Res Ctr Iran, Res Lab Spect, Tehran, Iran

[3] Chem & Chem Engn Res Ctr Iran, Adv Mat Res Lab, Tehran, Iran

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2015年 / 93卷

关键词：

Magnetic mesoporous adsorbent; Heavy metal ions removal; Aqueous media; MELAMINE-BASED DENDRIMERS; CONTROLLABLE CHEMISTRY; ENGINEERING NANOSPACES; PORE STRUCTURE; IRON-OXIDE; ADSORPTION; WATER; PB(II); CONTAMINANTS; EQUILIBRIUM;

D O I：

10.1016/j.cherd.2014.07.018

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

A novel magnetic functionalized MCM-48 mesoporous silica with amine (-NH2) and melamine-based dendrimer amines (MDA) were synthesized that can be easily separated from aqueous solutions by applying a magnetic field. The synthesis adsorbent (MDA-magMCM-48) was characterized by low angle XRD, TEM, FT-IR, TGA and N-2 adsorption-desorption isotherm techniques. Batch adsorption experiments were carried out to study the sorption behavior of MDA-magMCM-48 toward Pb(II), Cu(II), Cr(VI) and Cd(II) metal ions. The adsorption of metal ions was well modeled by pseudo-second-order model and Langmuir sorption isotherm with maximum adsorption capacities of 127.24, 125.80, 115.60 and 114.08 mg g(-1) Pb(II), Cu(II), Cr(VI) and Cd(II) metal ions, respectively. MDA-magMCM-48 was regenerated and found to be suitable for reuse in successive adsorption-desorption cycles for three times without significant loss in adsorption capacity. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：779 / 788

页数：10

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