A new method for removal of hazardous toluene vapor from air based on ionic liquid-phase adsorbent

Zarandi, Ali Faghihi; Shirkhanloo, Hamid; Jamshidzadeh, Cobra

doi:10.1007/s13762-018-1975-5

Cited by 23 publications

(16 citation statements)

References 39 publications

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“…where is sample mass, and / is obtained as the slope of a linear fitting of mass loss versus time for every isothermal TGA. The activation energy and pre-exponential factor can be derived from Equation (20). Several studies have applied this method to calculate the activation energy and pre-exponential factor [47,74,75,78,101].…”

Section: Arrhenius Methodsmentioning

confidence: 99%

“…Previous research has proved that ILs have many advantages, including non-volatility, non-flammability, high thermal and chemical stability, wide electrochemical window, tunable miscibility, and good extraction capability, which are not attained for the volatile organic solvents [6][7][8]. As a result of these features and advantages, ILs are used in a wide range of applications such as catalyst [9][10][11][12][13][14], pre-treatment of biomass [15][16][17], absorbent [18][19][20], gas sensors [21], electrolyte [22][23][24], and membrane separation [25][26][27]. Among all of the applications, high-temperature utilization accounts for the vast majority, including high-temperature lubricants [28][29][30], solvents for high-temperature organic reactions [31], heat-transfer fluids [32,33], and thermal energy storage [34,35].…”

Section: Introductionmentioning

confidence: 99%

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Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Cheng

2021

Processes

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Ionic liquids (ILs) are the safest solvent in various high-temperature applications due to their non-flammable properties. In order to obtain their thermal stability properties, thermogravimetric analysis (TGA) is extensively used to analyze the kinetics of the thermal decomposition process. This review summarizes the different kinetics analysis methods and finds the isoconversional methods are superior to the Arrhenius methods in calculating the activation energy, and two tools—the compensation effect and master plots—are suggested for the calculation of the pre-exponential factor. With both parameters, the maximum operating temperature (MOT) can be calculated to predict the thermal stability in long-term runnings. The collection of thermal stability data of ILs with divergent cations and anions shows the structure of cations such as alkyl side chains, functional groups, and alkyl substituents will affect the thermal stability, but their influence is less than that of anions. To develop ILs with superior thermal stability, dicationic ILs (DILs) are recommended, and typically, [C4(MIM)2][NTf2]2 has a decomposition temperature as high as 468.1 °C. For the convenience of application, thermal stability on the decomposition temperature and thermal decomposition activation energy of 130 ILs are summarized at the end of this manuscript.

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Section: Arrhenius Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Cheng

2021

Processes

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“…This is agreed by Henry's law that solubility of gases usually decreases with increasing temperature. Faghihi-Zarandi et al [55] showed that the absorption capacity was increased from 0 to 20 • C. For the temperature range from 20 to 60 • C, the toluene removal efficiency and absorption capacity by ILs were a little bit reduced by temperature increasing. However, when temperature increased from 60 to 120 • C, the toluene absorption capacities by ILs was decreased sharply because the physical interactions between toluene and the IL such as hydrogen bonds and hydrophobic interaction were decreased in high temperature.…”

Section: Effect Of Temperaturementioning

confidence: 99%

Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling

Yan

Anguille

Bendahan

et al. 2021

Chemical Engineering Journal

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“…Moreover, the removal of toluene and dichloromethane was simulated in an industrial packed column by employing [AllylEt 2 S][NTf 2 ] and [bmim][NTf 2 ] ILs, which demonstrated a good potential of ILs for toluene removal. Faghihi-Zarandi et al have investigated the absorption and desorption performance of toluene on five ILs, and the results indicated that the removal efficiency of toluene with 3-triphenylphosphonium-propane-1-sulfonic acid tosylate IL obtained was up to 99.5%, which was higher than those of the other four ILs, and can be treated as a potential absorbent for toluene removal. Zhang et al employed the COSMO-SAC model to screen the imidazolium ILs for toluene vapor absorption, and a toluene vapor absorption experiment with six ILs was also conducted to verify this screening method.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Sustainability of an Ionic Liquid-Based BTX Harvesting Process from Energetic, Environmental, and Economic Perspectives

Ning

et al. 2021

ACS Sustainable Chem. Eng.

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1-Ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([EMIM][Tf2N]) ionic liquid as a novel absorbent has excellent performance in BTX absorption. However, compared with the traditional method using triethylene glycol (TEG), the sustainability of the former is unknown. Thus, to bridge the gap and give a comprehensive evaluation of its industrialization potential, a methodology-integrated energetic, economic, and environmental assessment was employed. The assessment results show that the heating and cooling energy consumptions of the TEG process are 1.08 and 0.74 times higher than those of the [EMIM][Tf2N] process, respectively. But through heat integration, 5% hot and 3.4% cold utilities can be saved for the [EMIM][Tf2N] process. In terms of economic performance, the total annual costs for TEG and [EMIM][Tf2N] processes are 0.6111 and 0.4841 M$/year, respectively, and the latter is 26.3% lower than the former. As for the environmental assessment, the results indicated that compared with the TEG scenario, the [EMIM][Tf2N] scenario without absorbent recovery presented higher environmental burdens in all categories, and the largest difference lies in acidification, for which the latter is 42 times that of the former. However, when considering the absorbent recovery, the results are contradictory. Thus, the comprehensive assessment methodology proved that the [EMIM][Tf2N]-based BTX absorption process is sustainable and can be a potential industrialization technology.

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A new method for removal of hazardous toluene vapor from air based on ionic liquid-phase adsorbent

Cited by 23 publications

References 39 publications

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling

Deciphering the Sustainability of an Ionic Liquid-Based BTX Harvesting Process from Energetic, Environmental, and Economic Perspectives

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