期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 1, 期 4, 页码 736-745出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2013.07.010
关键词
Adsorption; Heavy metal; Activated carbon; Chelating resin; Dipping; Ultrasonic
资金
- National Natural Science Foundation of China (NSFC) [21076054, 51002042]
- Natural Science Important Foundation of Educational Commission of Anhui Province [2010AJZR-85, 2011AJZR-87]
- Study Foundation of New Product and Technology of Anhui Economic and Information Technology Commission [2012AHST0797]
Tetraoxalyl ethylenediamine melamine chelate resin grafted-coconut active charcoal (MFT/AC) was fabricated for Ni(II), Pb(II) and Cd(II) removal using a convenient pressure relief-dipping-ultrasonic synthesis method firstly. Under the aid of vacuum pressure relief, chemicals could be quickly implanted the intrinsic porous of AC in aqueous solution, the processes involved three steps, ethylenediamine was modified at AC, tetraoxalyl ethylenediamine was grafted at the amine function, then melamine, formaldehyde and tetraoxalyl ethylenediamine could be polymerized at AC in suit to form MFT/AC. The present materials were carefully examined by fourier transform infrared spectroscopy, field emission scanning electron microscope and X-ray photoelectron spectroscopy. MFT/AC showed excellent uptake effects for Ni(II), Pb(II) and Cd(II) removal with a pseudo-second order model. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models well described the equilibrium isotherm. Thermodynamic parameters showed that adsorptions were feasible, spontaneous and endothermic; these suggested that both electrostatic adsorption and chemisorption were involved. The results indicated that MFT/AC could well be used as a high performance sorbent for the heavy metal ions removal from aqueous solution with a list of Ni(II) > Pb(II) > Cd(II). (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据