Management of typical VOCs in air with adsorbents: status and challenges

Ye, Qingqing; Chen, Yaoyao; Li, Yizhao; Jin, Ruiben; Geng, Qingshan; Chen, Si

doi:10.1039/d3dt01930f

Cited by 15 publications

(6 citation statements)

References 120 publications

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“…Volatile organic compounds (VOCs), as common organic pollutants in the air, can derive from industrial production and natural decomposition [12]. Unlike other pollutants exposed to the human body in speci c environments, the widespread presence of VOCs in the air makes it more widely exposed to the general population through inhalation, digestion and absorption in the lungs, and skin in ltration [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The associations of blood volatile organic compounds with sleep health in the American adults: Data from NHANES 2007-2012

Chen,

Tang,

et al. 2023

Preprint

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Background Unhealthy sleep health has become a rising public health epidemic, and environmental issues have become a burgeoning orientation to probe into the factors affecting sleep health. Volatile organic compounds (VOCs), common organic pollutants in the air, were connected with some somatic diseases, while whether VOCs exposure or which VOCs lead to sleep abnormality was yet explored so far. Methods We analyzed blood content data of five VOCs (LBXVBF, blood bromoform; LBXVBM, blood bromodichloromethane; LBXVCF, blood chloroform; LBXVCM, blood dibromochloromethane; LBXVME, blood MTBE) reported for 5740 adults in NHANES 2007–2012. Sleep health categories, including trouble sleeping, sleep disorder, and insufficient (<6 h/day) or excessive (>9 h/day) sleep, were examined. Weighted multiple linear/logistic regression models were constructed to estimate the linear associations of VOCs exposure with sleep health. As for survival analysis of different VOCs related with individual survival outcomes, we selected the weighted multivariate COX regression model to assess. To explore the non-linear association between variables, restricted cubic spline (RCS) regression analysis was carried out. Moreover, three adjustment regression modeling strategies were utilized to evaluate the VOCs effect on sleep health. Results According to the adjusted linear RCS regression model, it is reported that the U-shaped nonlinear relationship between blood VOCs (LBXVBM: P-overall = 0.0284; LBXVCM: P-overall = 0.0321) and sleep duration. The fully adjusted logistic RCS model revealed that LBXVBM, LBXVCM and LBXVCF all displayed statistically significant U-shaped curves in trouble sleep and insufficient sleep groups (P-overall < 0.05). The adjusted COX-RCS analysis results revealed that the LBXVME (p-overall = 0.0359) was risk factor for all-cause mortality. Conclusions There was a negative non-linear association between specific blood VOCs and sleep health among U.S. adults, and this adverse effect was mainly manifested in trouble sleeping and prolonged sleep duration. Moreover, the results of survival analysis showed that environmental VOCs exposure could induce adverse survival outcomes. Future prospective longitudinal studies should be conducted to further investigate and determine the degree of the association between VOCs and sleep health.

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Section: Introductionmentioning

confidence: 99%

The associations of blood volatile organic compounds with sleep health in the American adults: Data from NHANES 2007-2012

Chen,

Tang,

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…In fact, the adsorption force between AC and the pollutant is weak when the pore is far larger. VOCs usually have a diameter similar to the micropore scale, and, consequently, the number of micropores is a key factor in terms of VOC adsorption, especially at low concentrations [10]. Mesopores are important as well due to their greater diffusion capacity towards VOCs than micropores.…”

Section: Introductionmentioning

confidence: 99%

“…For example, methanol and acetone are adsorbed by polar groups on the surface thanks to dipole-dipole interaction. Thus, AC shows both adsorption and partition effects in air cleaning [10,11]. There are many limitations on the use of AC as an adsorbent; firstly, if the adsorption occurs at elevated temperatures, AC can ignite, or its porous structure can collapse [8].…”

Section: Introductionmentioning

confidence: 99%

“…Chemisorption and irreversible sorption can also occur, especially at high VOC concentrations and high moisture. All previously mentioned issues may, in the worst-case scenario, result in reduced adsorption capacity [10,12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Indoor air remediation has been previously investigated in several studies; however, to the best of our knowledge, none of these have ever been monitored with PTR-MS during cooking processes [10,[26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Analysis of Volatile Organic Compound Purification Techniques in Complex Cooking Emissions: Adsorption, Photocatalysis and Combined Systems

Zatta,

Segata,

Biasioli

et al. 2023

Molecules

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Volatile organic compounds (VOCs) are molecules present in our everyday life, and they can be positive, such as in the formation of odour and food flavour, or harmful to the environment and humans, and research is focusing on limiting their emissions. Various methods have been used to achieve this purpose. Firstly, we review three main degradation methods: activated carbon, photocatalysis and a synergetic system. We provide a general overview of the operative conditions and report the possibility of VOC abatement during cooking. Within the literature, none of these systems has ever been tested in the presence of complex matrices, such as during cooking processes. The aim of this study is to compare the three methods in order to understand the behaviour of filter systems in the case of realistically complex gas mixtures. Proton transfer reaction–mass spectrometry (PTR-MS) has been used in the real-time monitoring of volatilome. Due to the fact that VOC emissions are highly dependent on the composition of the food cooked, we evaluated the degradation capacity of the three systems for different burger types (meat, greens, and fish). We demonstrate the pros and cons of photocatalysis and adsorption and how a combined approach can mitigate the drawbacks of photocatalysis.

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Effect analysis of temperature and initial water content on the adsorption and separation of VOCs by ZIF‐8 based on molecular simulation

Li,

Zheng,

Huang

et al. 2024

J of Applied Polymer Sci

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Volatile organic compounds (VOCs) have seriously polluted the atmospheric environment and caused harmful effects on human beings, so it is imperative to control oil vapor emissions. Metal organic framework materials, as one of the porous materials, have a good application prospect in the field of gas adsorption separation. In this paper, the effects of temperature and initial water content (IWC) on the adsorption properties of methane (CH4), ethane (C2H6), ethylene (C2H4), propane (C3H8), and propylene (C3H6) by ZIF‐8 were studied by combining the large gauge Monte Carlo (GCMC) and ideal adsorption solution theory. The results show that the higher the temperature is, the lower the adsorption capacity is, the higher the threshold pressure is, and the single molecule interaction energy changes little with temperature. But pore volume is still the main influencing factor. The IWC also reduces the saturated adsorption capacity. Preloaded water molecules can enhance the electrostatic interaction at low pressure, thus affecting the adsorption heat and interaction energy of single molecules. Overall, these findings provide valuable mechanistic insights into the effects of temperature and IWC on the adsorption properties of ZIF‐8 for VOCs.

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Management of typical VOCs in air with adsorbents: status and challenges

Abstract: The serious harm of volatile organic compounds (VOCs) to the ecological environment and human health has attracted widespread attention worldwide. With economic growth and accelerated industrialization, the anthropogenic emissions of...

Cited by 15 publications

References 120 publications

The associations of blood volatile organic compounds with sleep health in the American adults: Data from NHANES 2007-2012

The associations of blood volatile organic compounds with sleep health in the American adults: Data from NHANES 2007-2012

Comparative Analysis of Volatile Organic Compound Purification Techniques in Complex Cooking Emissions: Adsorption, Photocatalysis and Combined Systems

Effect analysis of temperature and initial water content on the adsorption and separation of VOCs by ZIF‐8 based on molecular simulation

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