Ultra-Fast Removal of CBB from Wastewater by Imidazolium Ionic Liquids-Modified Nano-Silica
Mengyue Zhang,
Fan Yang,
Nan Wang,
Jifu Du,
Juntao Yan,
Ya Sun,
Manman Zhang,
Long Zhao
Affiliations
Mengyue Zhang
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China
Fan Yang
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China
Nan Wang
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jifu Du
School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
Juntao Yan
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China
Ya Sun
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China
Manman Zhang
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China
Long Zhao
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
The efficient removal of dyes is of significant importance for environmental purification and human health. In this study, a novel material (Si-MPTS-IL) has been synthesized by the immobilization of imidazole ionic liquids (ILs) onto nano-silica using the radiation grafting technique. The adsorption performance of Si-MPTS-IL for Coomassie Brilliant Blue (CBB) removal is studied by a series of static adsorption experiments. It is found that Si-MPTS-IL has ultra-fast adsorption kinetics, reaching equilibrium within 2 min. The adsorption process for CBB conforms to the Langmuir model. In addition, Si-MPTS-IL exhibits a negligible impact on the adsorption efficiency of CBB with the increase in salt concentration. After six cycles of adsorption–desorption, the adsorption efficiency of Si-MPTS-IL remained above 80%, indicating excellent regenerative properties and a promising candidate for the treatment of wastewater containing CBB. A study of the mechanism indicates that the CBB capture by Si-MPTS-IL can be attributed to the synergistic effects of electrostatic interactions and pore filling.
