Investigation of SO2 gas adsorption in metal–organic frameworks by molecular simulation

Background: Sulfur dioxide gas is known to include pollutants that are harmful to human health and the environment. Therefore, due to the increase of industrial activities, SO2 gas pollution control is very important. Objectives: The purpose of this study was to investigate the efficiency of sulfur dioxide removal by iron oxide nanoparticles deposited on clinoptilolite zeolite. Methods: Two materials, natural clinoptilolite and clinoptilolite containing iron oxide nanoparticles, were used as adsorbents of SO2. Both materials were characterized via scanning electron microscopy imaging, infrared spectroscopy, and N2 porosimetry, along with the determination of the thermodynamic properties and kinetics of SO2 adsorption. Therefore, breakthrough experiments were carried out at different temperatures and with different contact times. Sulfur dioxide adsorption of a real sample was considered for both adsorbents. Results: The adsorption efficiency of SO2 in the synthetic and actual sample was obtained at 80.3% and 66.7%, respectively, under optimum conditions (temperature of 25°C and duration of 28.5 minutes) by modified zeolite with iron oxide nanoparticles. The removal percentage average of SO2 was also obtained in the synthetic and actual sample at 43.8% and 31.3%, respectively, by zeolite in optimum conditions (temperature of 25°C and contact time of 20.5 minutes). The adsorption of SO2 with both adsorbents followed the pseudo-second-order equation and the adsorption process was an exothermic and spontaneous process. Conclusions: The addition of these iron oxide nanoparticles had a positive impact on the surface area and on SO2 capacity.

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“…Kinetic models of pseudo-first-order and pseudosecond-order, respectively, were calculated using linear Equations 2 and 3 (32): (2)…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…It has a strong, irritating odor in high concentrations of 3 mg/L (1). SO 2 is turned in the atmosphere into more stable end-products (2). Sulfur dioxide is emitted into the atmosphere from the combustion of sulfurcontaining fossil fuels and industrial activities (3,4).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Sulfur Dioxide on Clinoptilolite/Nano Iron Oxide and Natural Clinoptilolite

2019

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“…green gases; methane and hydrogen) storage, chemical separation (e.g. carbon capture as a global challenge), catalysis, drug storage and delivery, membranes, sensors as well as hazardous wastes (such as heavy metals, dyes, sulphur and nitrogen-containing compounds) removal Xiao and Yuan, 2009;Langmi et al, 2014;Song et al, 2014;Wu et al, 2014;Yusuf et al, 2014;Karmakar et al, 2016;Kumar et al, 2015;Li et al, 2016a;Li et al, 2015;Venna and Carreon, 2015;Wang et al, 2016). The large family of porous MOFs is one of the most promising classes of novel materials for the liquid-phase adsorption of various hazardous compounds Hasan and Jhung, 2015), such as the adsorption of nitrogen and sulphur containing compounds from both aqueous and non-aqueous media (Cyshosz et al, 2008;Ahmed et al, 2013).…”

Section: Mofs In Water Treatmentmentioning

confidence: 99%

Emerging adsorptive removal of azo dye by metal–organic frameworks

et al. 2016

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“…Yu et al [23] find that SO2 adsorbs more strongly than CO2 in Cu-BTC, both in the absence and presence of humidity. Molecular simulations suggest that Cu-BTC adsorbs about twice the amount of SO2 than ZIF-8 [24,25], as the pore size for this second material is too small to admit the SO2 molecule [25]. However, significant sorption does not occur until the SO2 partial pressure exceeds 10kPa in both cases [25].…”

Section: Introductionmentioning

confidence: 93%

Effects of industrial gas impurities on the performance of mixed matrix membranes

Kanehashi

Aguiar

et al. 2018

Journal of Membrane Science

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A series of mixed matrix membranes using a commercially available aromatic polyimide (Matrimid ® 5218) with nanoparticles formed from carbon, a porous organic polymer and metal organic frameworks were prepared to investigate the effects of flue gas impurities on gas permeation. We show that common impurities found in power station flue gases (H2S, SO2, and NO) have significant effects upon the performance of these mixed matrix membranes. The effects of NO, SO2 and H2S on the zeolitic imidazolate framework ZIF-8 are all large and rapid and would render these membranes unsuitable for flue gas service that do not use flue gas desulfurisation. Similarly, H2S adsorbs irreversibly into membranes containing copper benzene-1,3,5-tricarboxylate (Cu-BTC), although the impacts of NO and SO2 are less severe. The membranes containing a porous organic polymer or porous carbon are less affected by these contaminants. In particular, the permeability of the membrane containing the porous organic polymer is still significantly above that of the base Matrimid polymer after exposure for 80 days to 1000 ppm of each contaminant. Further, this mixed matrix structure shows enhanced H2S selectivity. These results suggest that MMMs prepared using organic based nanoparticles can be effective in gas separation applications such as natural gas sweetening, biogas purification and post-combustion carbon capture, when acid gases are present as an impurity.

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Investigation of SO2 gas adsorption in metal–organic frameworks by molecular simulation

Cited by 48 publications

References 52 publications

Adsorption of Sulfur Dioxide on Clinoptilolite/Nano Iron Oxide and Natural Clinoptilolite

Adsorption of Sulfur Dioxide on Clinoptilolite/Nano Iron Oxide and Natural Clinoptilolite

Emerging adsorptive removal of azo dye by metal–organic frameworks

Effects of industrial gas impurities on the performance of mixed matrix membranes

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