Synthesis, Characterization and Adsorption Properties of Low-cost Porous Calcined Dolomite Microspheres for Removal of Dyes
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2019年第3期
论文作者：闫姝 WANG Qinggang LIU Jingjing HUO Wenlong 杨金龙 HUANG Yong
文章页码：507 - 515
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（CO3）） 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.
闫姝1，WANG Qinggang2，LIU Jingjing1，HUO Wenlong1，杨金龙1,2，HUANG Yong1
1. State Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University2. School of Civil Engineering,Hebei University of Engineering
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（CO3）） 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.
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