Experimental and modeling investigations on the adsorption behaviors of indoor volatile organic compounds in an in-situ thermally regenerated adsorption-board module

Chen, Qiwei; Xiao, Ruofu; Xiao, Lixin; Yu, Tao; Mo, Jinhan

doi:10.1016/j.buildenv.2021.108065

Cited by 15 publications

(4 citation statements)

References 48 publications

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“…Experimental unit 4A was erected using conventional materials, while experimental unit 6B employed eco-friendly materials, enabling the assessment of long-term reductions in HCHO and VOCs (Figure 1) [42,43]. Furthermore, experimental units 8C and 10D were dedicated to general and eco-friendly materials [44]. Sequentially, these units involved the installation of wallpaper (including adhesive), floor materials (including adhesive), general furniture, kitchen furniture, and wooden window and door materials at approximately two-week intervals [45].…”

Section: Research Methods and Proceduresmentioning

confidence: 99%

Preliminary Study on the Emission Dynamics of TVOC and Formaldehyde in Homes with Eco-Friendly Materials: Beyond Green Building

Jung,

Abdelaziz Mahmoud,

Al Qassimi

et al. 2023

Buildings

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This preliminary study investigates the emission characteristics of formaldehyde (HCHO) and total volatile organic compounds (TVOC) in indoor environments, comparing the effects of eco-friendly materials and general materials. The study analyzes the concentration changes over time in the living rooms of experimental units to assess the effectiveness of eco-friendly materials in reducing indoor air pollutants. The results show that eco-friendly materials exhibit lower initial emissions of TVOC than general materials, gradually decreasing over time. Compared to the eco-friendly material unit, the general material unit takes longer to reach acceptable TVOC concentrations. The emission pattern of HCHO differs from TVOC, with the highest peak occurring on the seventh day. Major individual VOCs, except for benzene, exhibit a similar decreasing trend for TVOC over time. Eco-friendly materials demonstrate significant reductions in emissions compared to general materials in various material applications, including parquet flooring, wallpaper, built-in furniture, and kitchen furniture. However, the difference in emissions for door and window frames using eco-friendly materials is minimal. These findings emphasize the effectiveness of eco-friendly materials in reducing indoor air pollutants and provide valuable insights for creating healthier living environments. Further research is needed to optimize the application of eco-friendly materials in specific components and investigate their long-term impact on indoor air quality and occupant health.

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Section: Research Methods and Proceduresmentioning

confidence: 99%

Preliminary Study on the Emission Dynamics of TVOC and Formaldehyde in Homes with Eco-Friendly Materials: Beyond Green Building

Jung,

Abdelaziz Mahmoud,

Al Qassimi

et al. 2023

Buildings

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“…On this basis, Chen et al proposed an adsorption module with the parallel assembly of thermally regenerable adsorption films (Figure 14a). [190] The laminated structure is similar to the monolith construction in which gas flows through the channel and permeates the material through convection and diffusion. After the adsorbent gets penetrated, the adsorption films can be in situ thermally regenerated by the electric-heating desorption.…”

Section: Ideal Adsorption and Catalytic Component Structures For Mass...mentioning

confidence: 99%

Section: Ideal Adsorption and Catalytic Component Structures For Mass...mentioning

confidence: 99%

Recent Progress and Perspectives of Direct Ink Writing Applications for Mass Transfer Enhancement in Gas‐Phase Adsorption and Catalysis

et al. 2023

Self Cite

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Conventional adsorbents and catalysts shaped by granulation or extrusion have high pressure drop and poor flexibility for chemical, energy, and environmental processes. Direct ink writing (DIW), a kind of 3D printing, has evolved into a crucial technique for manufacturing scalable configurations of adsorbents and catalysts with satisfactory programmable automation, highly optional materials, and reliable construction. Particularly, DIW can generate specific morphologies required for excellent mass transfer kinetics, which is essential in gas-phase adsorption and catalysis. Here, DIW methodologies for mass transfer enhancement in gas-phase adsorption and catalysis, covering the raw materials, fabrication process, auxiliary optimization methods, and practical applications are comprehensively summarized. The prospects and challenges of DIW methodology in realizing good mass transfer kinetics are discussed. Ideal components with a gradient porosity, multi-material structure, and hierarchical morphology are proposed for future investigations.

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“…Xiao et al proposed an in-situ thermally regenerated process based on granular activated carbon, which dramatically prolonged the sorbent's life span [27]. However, a packed bed of granular activated carbon usually exhibited significant pressure drop and poor purifying performance, as the slow molecular diffusion inside the adsorbents [29,30]. Activated carbon fiber (ACF) is cheap and stable.…”

Section: Introductionmentioning

confidence: 99%

A Simple Preparation Method of Graphene and TiO2 Loaded Activated Carbon Fiber and Its Application for Indoor Formaldehyde Degradation

2022

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Formaldehyde has a significant impact on human health. This study used a simple dipping method to load graphene-titanium dioxide (GR-TiO2) on activated carbon fibers (ACFs). The microstructure of GR-TiO2/ACF hybrid material was observed by SEM, combined with XRD and BET analysis. The result showed that the GR-TiO2/ACF hybrid material had a specific surface area of 893.08 m2/g and average pore size of 2.35 nm. The formaldehyde degradation efficiency of the prepared material was tested under different conditions, such as ultraviolet (UV) radiation, air supply volume, relative humidity, initial mass concentration. The results showed that the UV radiation intensity, airflow and the initial mass concentration were positively correlated with the formaldehyde removal rate, and the relative humidity was negatively correlated with the formaldehyde removal rate. The GR-TiO2/ACF hybrid material had a maximum formaldehyde removal rate of 85.54% within 120 min.

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Experimental and modeling investigations on the adsorption behaviors of indoor volatile organic compounds in an in-situ thermally regenerated adsorption-board module

Cited by 15 publications

References 48 publications

Preliminary Study on the Emission Dynamics of TVOC and Formaldehyde in Homes with Eco-Friendly Materials: Beyond Green Building

Preliminary Study on the Emission Dynamics of TVOC and Formaldehyde in Homes with Eco-Friendly Materials: Beyond Green Building

Recent Progress and Perspectives of Direct Ink Writing Applications for Mass Transfer Enhancement in Gas‐Phase Adsorption and Catalysis

A Simple Preparation Method of Graphene and TiO2 Loaded Activated Carbon Fiber and Its Application for Indoor Formaldehyde Degradation

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