Abstract
Formaldehyde is a common emission from furniture and indoor decorations. Although the concentration of formaldehyde gas is not too high in the indoor environment, it is highly toxic and carcinogenic. The formaldehyde removal potential of a novel type of green and safe nano-porous materials, Metal-Organic Frameworks (MOFs), with a high surface-to-volume ratio, strong adsorption capacity, and low regeneration temperature was investigated. To date, researchers are mainly focusing on formaldehyde selectivity and detection using MOFs in low moisture circumstances. This study carried out a series of experiments to compare breakthrough curves of formaldehyde dynamic adsorption on MIL-100(Fe), MIL-160(Al), and aluminum fumarate with activated carbon. In experiments, the formaldehyde was evaporated from diluted formalin solution, dried to 30±5 % RH, and driven through different adsorbents by nitrogen. The results indicated that MOFs showed great potential for indoor air formaldehyde removal.
Highlights
IntroductionPeople spent roughly 90% of their time indoors in the 1960s [1] and tended to spend more time inside buildings with the process of urbanization
When mechanical ventilation is not used in buildings, the air changes per hour (ACH) declines, resulting in the accumulation of indoor pollutants
The formaldehyde adsorption performance on different materials is presented in relative formaldehyde concentration in Figure 2 (a), which refers to the ratio of formaldehyde concentration at outlet and inlet
Summary
People spent roughly 90% of their time indoors in the 1960s [1] and tended to spend more time inside buildings with the process of urbanization. Sick-building syndrome (SBS) occurs more frequently after long-term exposure to airtight and energy-efficient buildings[3]. More strict standards on airtightness performance are implemented worldwide [4] to accomplish the energy-saving buildings, leading to less air infiltration in buildings. To compensate for this amount of reduced natural ventilation, mechanical ventilation is needed to supply sufficient fresh air at the inevitable cost of energy consumption. When mechanical ventilation is not used in buildings, the air changes per hour (ACH) declines, resulting in the accumulation of indoor pollutants. Many indoor air contaminants could be significant causes of SBS, comprised of volatile organic compounds (VOCs), dust/fibers, bioaerosols, entrapped outdoor sources, and contaminants generated by human activity[3]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
