期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 101, 期 -, 页码 490-501出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2017.03.027
关键词
Modified cellulose nanoparticles; Gallic acid; Aluminium
Microwave assisted preparation of cellulose modified with gallic acid (MA-Cell-GA) was developed for high efficient adsorption of Al3+. The as-prepared modified cellulose has been characterized by elemental analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and zeta potential measurements. Energy dispersive X-ray (EDX) spectrum was utilized to proof the adsorption of Al3+. The effect of various experimental factors, as pH, amount of adsorbent, shaking time, initial metal ion concentration, temperature, concomitant ions and desorption conditions on the extraction efficiency was investigated and optimized in batch mode experiments. The adsorption capacity and the surface area of MA-Cell-GA were 59.6 mg g(-1) and 160 m(2) g(-1), respectively which were significantly higher than those of the sorbent obtained via traditional reflux procedure. The thermodynamic factors (AH and AG') values for adsorption of Al3+ on MW-Cell-GA confirmed the non-spontaneousity and exothermic character of the adsorption process. It was indicated that the prepared adsorbent can be regenerated easily using EDTA. The procedure was successfully applied for the pre-concentration of Al3+ in water, rocks, blood and soil samples prior to the determination using inductively coupled plasma optical emission spectrometry (ICP-OES). (C) 2017 Elsevier B.V. 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