Adsorptive removal of toluene and carbon tetrachloride from gas phase using Zeolitic Imidazolate Framework-8: Effects of synthesis method, particle size, and pretreatment of the adsorbent

Jafari, Saeed; Shahna, Farshid Ghorbani; Bahrami, Abdulrahman; Kazemian, Hossein

doi:10.1016/j.micromeso.2018.04.013

Cited by 67 publications

(25 citation statements)

References 51 publications

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“…7 Hence, there is a pressing need to remove VOCs from the atmosphere. Various physical, chemical and biological removal techniques have been widely used such as adsorption, 8,9 oxidation, 1,9 bio-ltration, 10,11 biodegradation, 12 bio-reactor removal 13,14 and catalytic combustion. 15 Among the above technologies, adsorption is a good candidate method for air purication, as it is efficient, low cost and a simple technique.…”

Section: Introductionmentioning

confidence: 99%

“…They consist of activated carbon, carbon nanotubes, zeolites, graphene and metal-organic frameworks (MOFs). 8,9,16,17 Metal-organic frameworks (MOFs) are known to have explicit pore structures, a high specic surface area and a high pore volume, which makes them good candidates for many applications, such as gas storage and adsorption. 18,19 Compared to other traditional porous materials like activated carbon, MOFs have excellent advantages for the removal of VOCs due to high specic surface area, diverse structural composition, a large number of active adsorption sites and cation-p bonding through electrostatic attraction with a benzene ring.…”

Section: Introductionmentioning

confidence: 99%

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Toluene adsorption on porous Cu–BDC@OAC composite at various operating conditions: optimization by response surface methodology

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Toluene adsorption on porous Cu–BDC@OAC composite at various operating conditions: optimization by response surface methodology

et al. 2020

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“…According to previous studies reported, the adsorption behavior for a mixed VOC pollutant has been usually studied individual for each pollutant (Jafari et al 2018;Xu et al 2018). However, very few studies have investigated adsorption of binary mixtures (e.g., benzene and toluene) (Lillo-Ródenas et al 2006;Shin et al 2002).…”

Section: Competitive Adsorption Mechanisms Among Benzene and Toluene mentioning

confidence: 99%

High-performance gas-phase adsorption of benzene and toluene on activated carbon: response surface optimization, reusability, equilibrium, kinetic, and competitive adsorption studies

Baytar

Şahi̇n

Horoz

et al. 2020

Environ Sci Pollut Res

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In recent years, volatile organic compounds (VOCs) have become a group of major pollutants that endanger human health and the ecological environment. The main purpose of this study was to investigate the gas-phase adsorption processes of benzene and toluene, which are important VOCs, on the activated carbon (AC) produced from Elaeagnus angustifolia seeds by physical activation method. In this context, the central composite design (CCD) approach-based response surface methodology (RSM) was applied to examine and optimize the effects of process parameters on the adsorption of benzene and toluene by AC adsorbent. The characterization of the produced AC was performed by the Brunauer-Emmett-Teller surface area, scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction analysis. The optimum process parameters were achieved (adsorption time of 74.98 min, initial benzene concentration of 16.68 ppm, and temperature of 26.97°C, and adsorption time of 73.26 min, initial toluene concentration of 18.46 ppm and temperature of 29.80°C) for benzene and toluene, respectively. The maximum adsorption capacities of benzene and toluene on AC were determined to be 437.36 and 512.03 mg/g, respectively, under optimum parameters. The adsorption process kinetics and equilibrium isotherms were also evaluated. Besides, AC reusability studies were performed five times for the gas-phase adsorption and desorption of benzene and toluene. After five cycles, it was observed that the benzene and toluene adsorption capacity of the AC decreased slightly by 8.10% and 7.42%, respectively. The results revealed that the produced AC could be utilized successfully for the removal of benzene and toluene in the gas-phase adsorption systems because of its high surface area, high adsorption capacity, and high reusability performance. Furthermore, the adsorption processes of benzene and toluene were investigated, both sole components and in a Highlights • Activated carbon (AC) was successfully produced, characterized, and used for the gas-phase adsorption of benzene and toluene. • The optimization of the process parameters for the maximum adsorption capacity of benzene and toluene by AC was performed by employing RSM. • Kinetic and isothermal parameters were determined for the gas-phase adsorption of benzene and toluene on AC. • The reusability study of AC was carried out for adsorption-desorption of benzene and toluene. • The maximum adsorption capacities of benzene and toluene on AC were determined to be 437.36 and 512.03 mg/g, respectively, under optimum parameters. • The adsorption behaviors of benzene and toluene against AC were quite different when they were in the competition and without competition.

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“…Other studies have revealed that the adsorption properties could be affected by the particle size of the adsorbent. 41,[43][44][45][46] Most of above experimental and theoretical studies were focused on the adsorption under static conditions. However, there were few literatures on the adsorption properties of the solid adsorbents swing.…”

Section: Introductionmentioning

confidence: 99%

Effect of swing on removing CO2 from offshore natural gas by adsorption

Chen

Tian

Tao

et al. 2020

Chemical Engineering Journal

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Removing CO2 from CH4/CO2 mixture gas is significantly important in natural gas upgrading and greenhouse gas emission control. In order to improve the separation effect, the influence of swing on removing CO2 from offshore natural gas by the adsorption was studied systematically by experiment and simulation. Firstly, the adsorption experiment was carried out under the quiescent condition, single direction swing with a frequency of 0.12Hz, bidirectional coupling swing with a frequency of 0.12 Hz and quiescent condition with a tilting angle of 20° by the swing experiment platform. The results indicated that the swing of the adsorber can reduce the adsorption purification effect, and which is not caused by the decrease of the adsorbent performance. Then, the adsorption purification model was established and the validity of the model was verified by experiments. Finally, the effects of tilting angle and L/D ratio of the porous zone, inlet flow rate of the mixture gas, particle diameter of adsorbent, and gas inlet distribution of the adsorber on adsorption purification under the quiescent and swing conditions were studied in detail. The results showed that decreasing the tilting angle of the porous zone and inlet flow rate of the mixture gas, or increasing the L/D ratio of the porous zone, the particle diameter of the adsorbent and the inlet amounts of the adsorber can reduce the adverse effect of swing on purification of natural gas. It is of great significance to improve the effect of adsorption purification of natural gas under swing condition by changing the adsorption conditions and structure of the adsorber. The research will provide a certain guidance for removing CO2 from offshore natural gas by adsorption.

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Adsorptive removal of toluene and carbon tetrachloride from gas phase using Zeolitic Imidazolate Framework-8: Effects of synthesis method, particle size, and pretreatment of the adsorbent

Cited by 67 publications

References 51 publications

Toluene adsorption on porous Cu–BDC@OAC composite at various operating conditions: optimization by response surface methodology

Toluene adsorption on porous Cu–BDC@OAC composite at various operating conditions: optimization by response surface methodology

High-performance gas-phase adsorption of benzene and toluene on activated carbon: response surface optimization, reusability, equilibrium, kinetic, and competitive adsorption studies

Effect of swing on removing CO2 from offshore natural gas by adsorption

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