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Low‐cost, green synthesis and adsorption properties for dyes of novel porous gangue/palygorskite composite microspheres
Author(s) -
Yan Shu,
Wang Qinggang,
Zhang Fanyong,
Zhang Xiaoyan,
Lu Yuju,
Gan Ke,
Huo Wenlong,
Zhang Shuhao,
Liu Jingjing,
Yang Jinlong
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13185
Subject(s) - palygorskite , calcination , materials science , adsorption , composite number , chemical engineering , microsphere , langmuir adsorption model , specific surface area , spray drying , microstructure , composite material , catalysis , organic chemistry , chemistry , engineering
In this work, gangue/palygorskite composite microspheres were fabricated through spray drying process and activated by calcination treatment. Its microstructure and adsorption capacity for the removal of dye ( MB ) were also studied, systematically. Results showed that kaolinite, α‐quartz and palygorskite were the major phases in microspheres after proper calcination (lower than 900°C). BET ‐specific surface area of the microspheres reached the maximum value of 62.23 m 2 /g at 700°C, and then decreased with further increasing the heating temperature. In general, composite microspheres showed the largest adsorption capacity of MB after heat‐treated at 700°C. The q max of MB onto microspheres was 29.9‐51.9 mg/g. The adsorption process of MB onto microspheres was well described by both the pseudo‐second‐order kinetic and Langmuir isotherm model. The composite microspheres also had extraordinary recyclability. This novel microsphere could be employed as a candidate for novel absorbent and filter medium in the practical application for dye treatment in industrial applications.