Efficiency and performance tests of the sorptive building materials that reduce indoor formaldehyde concentrations

Huang, Kuo‐Ching; Tsay, Yaw-Shyan; Lin, Fang Ming; Lee, Ching Chang; Chang, Jung Wei

doi:10.1371/journal.pone.0210416

Cited by 10 publications

(7 citation statements)

References 31 publications

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“…This agrees with the results reported earlier that the purely silica-based paint has the highest OA value . However, it should be mentioned that OA of a pigment may also depend on some other factors such as the various physical and chemical properties of the pigment and also the binder (the oil) . As revealed in Figure b, the CPVC values increased by about 33% from 25Si/Ti to 15Si/Ti and by about 50% between the Si/Zr-based counterparts.…”

Section: Resultssupporting

confidence: 91%

“…On increasing the RH from 70 to 100%, both the adsorption capacity and rate were slightly increased. This slight increase, on the one hand, could be due to the fact that water vapor prevented the temperature from increasing with formaldehyde adsorption, thereby increasing the adsorption capacity as suggested by Huang et al On the other hand, a higher level of humidity can further promote adsorption of formaldehyde molecules owing to polar nature of the formaldehyde. The so-called water is essentially a monolayer of OH groups bound to the silicon and zirconium atoms on the Si/Zr MMO surface .…”

Section: Resultsmentioning

confidence: 95%

“…30 However, it should be mentioned that OA of a pigment may also depend on some other factors such as the various physical and chemical properties of the pigment and also the binder (the oil). 39 As revealed in Figure 3b, the CPVC values increased by about 33% from 25Si/Ti to 15Si/Ti and by about 50% between the Si/Zr-based counterparts. According to eq 2, it is evident that the CPVC values depend on both the OA value and the density of the pigments.…”

Section: ■ Introductionmentioning

confidence: 77%

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Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints

Adebayo

Trautman

Al-Naddaf

et al. 2021

Environ. Sci. Technol.

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This work reports the incorporation of mixed-metal oxides (MMOs) such as Si/Ti and Si/Zr into latex paints in the form of thin coatings for permanent trapping of indoor formaldehyde. The formaldehyde removal performance of the surface coatings was evaluated in a lab-scale indoor air chamber, and the results were compared with those of powder analogues. Due to the pore blockage by the latex, the incorporation led to 6−30% reduction in adsorption capacity and 50−70% drop in the adsorption rate for MMO-latex paints relative to their powder MMO analogues. Under the operating conditions of concentration, temperature, and relative humidity, the Si/Zr-latex paints outperformed the Si/Ti counterparts. It was also observed that performance could decrease over excessive loading, for example, Si/Zr-latex paint with 15/1 Si/Zr weight ratio showed a 20% lower adsorption capacity than that of the Si/ Zr-latex paint with 25/1 Si/Zr ratio at 5 ppm v , 25 °C, and 70% RH. While high temperature greatly reduced the adsorption rate of the MMO-latex paints, high humidity slightly promoted the rate of formaldehyde capture. In 10 L, flow-through chamber tests, 25Si/Zr-latex paint reduced 5 ppm v formaldehyde by up to 60% at 25 °C and 70% RH with an adsorption rate of 0.34 ppm v /h. Overall, this study highlights the potential of MMO-latex paints with optimized formation for the efficient abatement of indoor aldehydes.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 95%

Section: ■ Introductionmentioning

confidence: 77%

See 1 more Smart Citation

Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints

Adebayo

Trautman

Al-Naddaf

et al. 2021

Environ. Sci. Technol.

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“…Regarding the main causes of SBS, one can include volatile organic compounds (e.g., formaldehyde) discharged from the adhesives, finishing materials, paint used for furniture and buildings, and building materials (e.g., insulation) [5]. Many materials can absorb formaldehyde released into the atmosphere, e.g., wool [6], ornamental plants [7,8], building materials with adsorption potentials [9], or tree bark [5,10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Larch-Bark Capacity for Formaldehyde Removal in Wood Adhesives

Tudor

Barbu

Petutschnigg

et al. 2020

IJERPH

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Ecofriendly wood-based materials are required by consumers at present. Decorative panels are part of a large group of wood-composite materials, and their environmental properties must not be neglected. More environmentally friendly decorative panels can be achieved by various methods. This paper describes a method of production from larch bark. Tree bark, as a byproduct of the wood industry, is one of the research topics that have gained interest in the last decade, especially for its applications in biobased lignocomposites, with regard to the shrinkage of wood resources. In the present work, the formaldehyde content of decorative boards based on larch bark (0.6 g/cm3) was analyzed when bonded with five different types of adhesive systems: urea-formaldehyde, polyvinyl acetate, the mixture of 70% urea-formaldehyde + 30% polyvinyl acetate, polyurethane, and tannin-based adhesive. A self-agglomerated board was also analyzed. The formaldehyde content of the larch-bark samples was determined with the perforator method (EN 120:2011), and findings showed that all tested samples reached the E1 classification (≤8 mg/100 oven dry). Moreover, 75% of the values of the corrected formaldehyde content were included in the super-E0 class (≤1.5 mg/100 oven dry). In the case of boards bonded with tannin-based adhesive, this natural polymer acted as a formaldehyde scavenger.

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“…Currently, the adsorption performance evaluation method of functional building materials is JIS A 1905-11, JIS A 1905-21 of Japan (SAI Global, 2015) (Test method for reducing indoor air pollution source of adsorption building materials by the small chamber method-Part 1, Part 2 February 2007) was enacted. In 2008, JIS A 1961 was passed to target substances from HCHO to volatile organic compounds and other aldehydes (Huang et al, 2019). In addition, ISO 16000-23, an HCHO adsorption performance evaluation standard based on JIS A 1905-1 and JIS A 1906, and ISO 16000-24, a volatile organic compound adsorption performance evaluation standard, were established in March 2008 as DIS status (Chang et al, 2015).…”

Section: Standards and Specifications Related To Functional Materialsmentioning

confidence: 99%

Evaluating the adsorption performance of functional building material with HCHO remover

Jung

Alqassimi²,

Samanoudy³

2022

Front. Built Environ.

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Dubai Municipality is making significant efforts to reduce the concentration of chemical substances in major buildings via Green Building Regulations & Specifications. However, it has limitations to the problem because it simply regulates the indoor air concentration of some harmful substances from building materials. The functional building materials capable of adsorbing and decomposing indoor pollutants such as Formaldehyde (HCHO) and Volatile Organic Compounds (VOCs) are gradually spreading. This paper aims to evaluate the performance of functional building materials and analyze the effect of improving the indoor air environment. As a methodology, the investigation was done to research trends and standards for functional building standards. 20 L small chamber experiment was performed for wallpaper with 0%, 5%, 7%, 10%, and 15% of the ethylene urea (C5H10N2O3), HCHO remover. The result showed standard wallpaper’s adsorption rate on the seventh day was 6.21%. The formaldehyde remover adsorption rate for 7 days was 50.43% when formaldehyde remover was added at a 5 wt% (weight percentage); 60.21% when it was added at 7 wt%; 63.45% when it was added at 10 wt%; and 73.58% when it was added at 15 wt%. The adsorption rate on the seventh day with 7 wt%, 10 wt%, and 15 wt% HCHO remover showed a 60% or more (IS O 16000-24 standard). However, wallpaper with 15 wt%, displayed the highest value, was 5.736 μg/m2, which did not satisfy the IS O 16000-24 standard (6.000 μg/m2). It was statistically proven when the amount of the HCHO remover is increased; the adsorption performance is improved in proportion to the amount added. This study will serve as primary data to prepare UAE standards for the functional building materials with adsorption and decomposition performance of harmful chemicals, moisture absorption and moisture-proof performance, and antibacterial/anti-fungal performance.

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Efficiency and performance tests of the sorptive building materials that reduce indoor formaldehyde concentrations

Cited by 10 publications

References 31 publications

Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints

Passive Control of Indoor Formaldehyde by Mixed-Metal Oxide Latex Paints

Analysis of Larch-Bark Capacity for Formaldehyde Removal in Wood Adhesives

Evaluating the adsorption performance of functional building material with HCHO remover

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