| Title: | Comprehensive evaluation of ionic liquid [Bmim][PF(6)] for absorbing toluene and acetone |
| Author(s): | Ma X; Wang W; Sun C; Sun J; |
| Address: | "National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, China. National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong, 250061, China. Electronic address: wwenlong@sdu.edu.cn. Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK" |
| DOI: | 10.1016/j.envpol.2021.117675 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Absorption is an eminent technology for volatile organic compounds (VOCs) elimination with the merits of high efficiency and low cost. Absorbent plays a critical role in the absorption process, and the thermal stability, saturation capacity, and regeneration performance should be concerned. As a kind of green and eco-friendly solvent, ionic liquid (IL) is expected to be a substitute for the conventional VOCs absorbent. In this study, 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF(6)]) is employed to absorb the modeling VOCs (toluene and acetone). Moreover, the used [Bmim][PF(6)] is recovered by thermal distillation and the reusability is then conducted by consecutive batch experiments. Based on that, the thermal stability of [Bmim][PF(6)] is comprehensively examined, in which the kinetic and thermodynamic parameters are also calculated. Results reveal that [Bmim][PF(6)] owned promising toluene absorption performance with inlet concentration of 3000 mg/m(3) and flow rate of 300 mL/min at 20 degrees C, it possesses the saturated adsorption capacity of 5.16 mg/g. [Bmim][PF(6)] also shows satisfying thermal stability up to 610 K. In addition, thermal distillation is proved to be a reliable regeneration route on account of the recovered [Bmim][PF(6)] remained satisfying capacity even after five cycles" |
| Keywords: | Acetone *Ionic Liquids Solvents Thermodynamics Toluene Absorption Ionic liquids Reusability Thermal stability Volatile organic compounds; |
| Notes: | "MedlineMa, Xiaoling Wang, Wenlong Sun, Chenggong Sun, Jing eng England 2021/08/13 Environ Pollut. 2021 Sep 15; 285:117675. doi: 10.1016/j.envpol.2021.117675. Epub 2021 Jun 29" |
