Preparation and characterization of activated carbon from stellera chamaejasme L. roots

被引：0

作者：

Chen, Jie ^{[1
]}

Yuan, Cai-Deng ^{[1
]}

Li, Hai-Chao ^{[2
]}

Zhang, Li-Juan ^{[2
]}

Xu, Gui-Yu ^{[2
]}

机构：

[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin

[2] Faculty of Chemistry and Life Science, Qinghai Nationalities University, Xining

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2015年 / 29卷 / 05期

关键词：

Activated carbon; Adsorption-desorption; Orthogonal test; Phosphoric acid; Stellera chamaejasme L;

D O I：

10.3969/j.issn.1003-9015.2015.05.020

中图分类号：

学科分类号：

摘要：

A highly efficient activated carbon adsorbent was prepared from Stellera chamaejasme L. via phosphoric acid activation, and the preparation process was optimized with orthogonal experimental design. The effects of operation parameters including impregnation ratio, phosphoric acid concentration, activation temperature and activation time on adsorption properties and yields were evaluated. Pore structure, surface structure and surface functional groups of the activated carbon were characterized by nitrogen adsorption-desorption, scan electric microscope (SEM), X-ray diffraction (XRD) and Fourier Transform infrared spectroscopy (FT-IR). The optimum conditions were found as follows: phosphoric acid concentration 50% (wt), activation temperature 400℃, impregnation ratio 1:4 and activation time 60 min. The activated carbon prepared has high adsorption capacity, and it has an BET specific surface area of 1370 m2·g-1, average pore diameter of 3.18 nm, iodine adsorption of 1067 mg·g-1, methylene blue adsorption of 375 mg·g-1, ash content of 2.95% and maximum yield of 57.41%. ©, 2015, Zhejiang University. All right reserved.

引用

页码：1161 / 1166

页数：5

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