Synthesis, Characterization and Adsorption Properties of Low-cost Porous Calcined Dolomite Microspheres for Removal of Dyes

被引：3
|
作者：
闫姝 [1 ]
WANG Qinggang [2 ]
LIU Jingjing [1 ]
HUO Wenlong [1 ]
杨金龙 [1 ,2 ]
HUANG Yong [1 ]
机构：
[1] State Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University
[2] School of Civil Engineering,Hebei University of Engineering
来源：
Journal of Wuhan University of Technology(Materials Science) | 2019年 / 34卷 / 03期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
dolomite; adsorption; microspheres; equilibrium;
D O I：
暂无
中图分类号：
X703 [废水的处理与利用]; TQ424 [吸附剂];
学科分类号：
0817 ; 083002 ;
摘要：
Low-cost porous calcined dolomite microspheres were prepared by simple spray drying and subsequent calcination. Effects of calcination temperature on phase evolution and adsorption properties of MB were investigated systematically. Results showed that microspheres treated at 400 ℃ kept mainly calcium carbonate(CaMg(CO)) phase with some small pores, showing better removal efficiency for MB. With the dosage of 20 g/L under the starting concentration of 100 mg/L, the removal efficiency of the microspheres reached 95.6%. The adsorption kinetics data followed the pseudo-second-order kinetic model, and the isotherm data fit the Langmuir isotherm model. The low-cost microsphere could be applied as a promising absorbent for dyes in wastewater filtration and adsorption treatment.
引用
收藏
页码：507 / 515
页数：9
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