Study on the adsorption of low-concentration VOCs on zeolite composites based on chemisorption of metal-oxides under dry and wet conditions

Yin, Tao; Meng, Xuan; Wang, Sitan; Yao, Xiaoyu; Liu, Naiwang; Shi, Li

doi:10.1016/j.seppur.2021.119634

Cited by 48 publications

(9 citation statements)

References 66 publications

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“…Moreover, the dynamic toluene adsorption capacity of HKUST-1@PVA (123.82 mg g −1 ) beads exceeds that of the zeolite Y@MnO 2 , which is reported to be at 50 mg g −1 . 21…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the dynamic toluene adsorption capacity of HKUST-1@PVA (123.82 mg g À1 ) beads exceeds that of the zeolite Y@MnO 2 , which is reported to be at 50 mg g À1 . 21 With this, analyses of the adsorption kinetics were carried out by fitting the adsorption data to two adsorption kinetic models. The fitted curves and kinetic parameters are presented in Fig.…”

Section: Dynamic Toluene Adsorptionmentioning

confidence: 99%

“…Literature on dynamic low concentration adsorption of toluene is limited and currently the zeolite material Y@MnO 2 exhibits the best adsorption capacity for toluene (50 mg g À1 ). 21 The main drawback for MOFs, in comparison to commercially available activated carbon (AC) and zeolites such as ZSM-5 for use in VOC adsorption is the cost of production. Upon addressing the issues with synthesis, the production costs may be brought down and MOFs, which possess a better adsorption capacity, may have the potential to outperform and replace these commercial products.…”

Section: Introductionmentioning

confidence: 99%

“…Literature on dynamic low concentration adsorption of toluene is limited and currently the zeolite material Y@MnO 2 exhibits the best adsorption capacity for toluene (50 mg g −1 ). 21…”

Section: Introductionmentioning

confidence: 99%

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MOF@PVA beads for dynamic and low concentration VOC capture

Liu

Lai

et al. 2022

Mater. Adv.

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“…Moreover, the dynamic toluene adsorption capacity of HKUST-1@PVA (123.82 mg g −1 ) beads exceeds that of the zeolite Y@MnO 2 , which is reported to be at 50 mg g −1 . 21…”

Section: Resultsmentioning

confidence: 99%

Section: Dynamic Toluene Adsorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Literature on dynamic low concentration adsorption of toluene is limited and currently the zeolite material Y@MnO 2 exhibits the best adsorption capacity for toluene (50 mg g −1 ). 21…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

MOF@PVA beads for dynamic and low concentration VOC capture

Liu

Lai

et al. 2022

Mater. Adv.

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“…Anthropogenic VOC emissions accounted for approximately 50% of the total emissions in China . Industrial VOCs own high volumetric flow rate and low concentrations . The characteristics make it difficult to be disposed .…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on the Adsorption/Desorption Performance of Low-Concentration VOCs over H-ZSM-5 with Different SiO₂/Al₂O₃ Ratios

Yue

Wang

et al. 2023

Ind. Eng. Chem. Res.

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A mechanistic study was presented on the effect of the SiO 2 /Al 2 O 3 ratio (SAR) on the adsorption/desorption behaviors of low-concentration volatile organic compounds (VOCs) over H-ZSM-5. In this study, n-hexane, toluene, and ethyl acetate were used as the probe VOC molecules. And their adsorption isotherms on different H-ZSM-5 (SARs = 25, 130, 300, and 470) were collected at various temperatures (30, 40, and 50 °C). Results showed that high SARs were conducive to adsorption, but the desorption efficiency was imperfect. The dependence between an absorbent and VOCs was divergent. Higher adsorption capacity for toluene (87.54 mg•g −1 ) and ethyl acetate (150.74 mg• g −1 ) was achieved on H-ZSM-5(470), while H-ZSM-5(300) owned higher adsorption capacity for n-hexane (107.24 mg•g −1 ). Based on the adsorption isotherms and breakthrough curves, the equilibrium and kinetic parameters were obtained based on the Langmuir model. Then, a rigorous temperature swing desorption (TSA) model was established to predict the evolution of temperature and VOC concentration along the axial adsorption bed. And the simulation results of the TSA process agreed well with the experimental data.

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Utilization of coal gangue for preparing high‐silica porous materials with excellent ad/desorption performance on VOCs

Jiang

Zhao

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: Coal gangue causes a series of environmental problems due to its low utilization rate and high amount of hoarding. However, the preparation of porous materials with coal gangue is an effective method of resource utilization. Mesoporous silica and meso-microporous ZSM-5 were prepared with alkali melting activation-acid leaching and hydrothermal synthesis, respectively. The orthogonal experiment was used to explore the optimal preparation conditions for mesoporous silica. Meso-microporous ZSM-5 were characterized with instruments. The adsorption and desorption performance of the porous material was explored by dynamic adsorption/desorption on volatile organic compounds (VOCs).RESULTS: The optimal preparation conditions for mesoporous silica are a roasting temperature of 800 °C, mass ratio of coal gangue to sodium carbonate of 1:0.6, and sulfuric acid leaching of 4 mol L −1 . The characterization results show that the molecular sieve has a superior specific surface and a certain amount of mesoporous pores due to the addition of the appropriate mesoporous template. The results of toluene dynamic adsorption experiments show that the meso-microporous ZSM-5 (ZSM-5-0.025PAC) has excellent adsorption and desorption performance (the adsorption capacity is up to 47.02 mg g −1 ), water resistance (the adsorption capacity decreased only 4.64%), and renewability (the adsorption and desorption efficiency is up to 95% and 97%).CONCLUSION: The porous materials prepared presented excellent VOCs ad/desorption performance, which has good industrial application prospects. The research provides a novel approach for the utilization of coal gangue.

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Study on the adsorption of low-concentration VOCs on zeolite composites based on chemisorption of metal-oxides under dry and wet conditions

Cited by 48 publications

References 66 publications

MOF@PVA beads for dynamic and low concentration VOC capture

MOF@PVA beads for dynamic and low concentration VOC capture

Experimental and Numerical Investigations on the Adsorption/Desorption Performance of Low-Concentration VOCs over H-ZSM-5 with Different SiO₂/Al₂O₃ Ratios

Utilization of coal gangue for preparing high‐silica porous materials with excellent ad/desorption performance on VOCs

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Study on the adsorption of low-concentration VOCs on zeolite composites based on chemisorption of metal-oxides under dry and wet conditions

Cited by 48 publications

References 66 publications

MOF@PVA beads for dynamic and low concentration VOC capture

MOF@PVA beads for dynamic and low concentration VOC capture

Experimental and Numerical Investigations on the Adsorption/Desorption Performance of Low-Concentration VOCs over H-ZSM-5 with Different SiO2/Al2O3 Ratios

Utilization of coal gangue for preparing high‐silica porous materials with excellent ad/desorption performance on VOCs

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Experimental and Numerical Investigations on the Adsorption/Desorption Performance of Low-Concentration VOCs over H-ZSM-5 with Different SiO₂/Al₂O₃ Ratios