Open AccessAdsorption kinetics and isothermal adsorption model of crystal violet on modified red mud
Author(s) -
Wei Li,
Shuwen Luo,
MA Hong-yan,
Fanghua Yi,
Zheng Li,
Wenmiao Guo,
Qiuju Han,
Xiaohong Yao
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/508/1/012151
Subject(s) - adsorption , crystal violet , freundlich equation , dodecylbenzene , langmuir , kinetics , chemistry , isothermal process , langmuir adsorption model , sulfonate , materials science , chromatography , sodium , organic chemistry , thermodynamics , physics , quantum mechanics , medicine , pathology
The adsorption of crystal violet on red mud modified by sodium dodecylbenzene sulfonate (SDBS) was studied. The effect of the dosage of modified red mud on crystal violet adsorption was investigated. The results of kinetics and thermodynamics experiments showed that the adsorption of crystal violet by adsorbent fitted with the pseudo-second-order adsorption kinetic model better. The adsorption of crystal violet on modified red mud could be described by Langmuir and Freundlich models, and the adsorption was better in accordance with Freundlich isothermal adsorption model. According to the Langmuir adsorption model, the maximum adsorption capacity of adsorbent was 38.16mg/g at 303K.