Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Rengga, Wara Dyah Pita; Sudibandriyo, Mahmud; Nasikin, Mohammad

doi:10.1051/matecconf/20165904004

Cited by 6 publications

(11 citation statements)

References 10 publications

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“…In particular, the presence of oxygen and various metals suggest that a metal oxide supported on the AC could be acting to oxidize the HCHO. This has been shown in a number of studies but with recognized noble metal or metal oxide catalysts such as Ag nanoparticles or MnO 2 [28,55]. This mix of materials, or its components, does not correspond to the materials found in literature studies describing HCHO oxidation.…”

Section: Compositesmentioning

confidence: 88%

“…Untreated graphite oxide (GO) was also tested to determine whether it would be a suitable candidate for applying treatments to form an effective HCHO filter [58]. Chemical treatments of AC have been shown to increase its ability to trap HCHO, typically through the addition of amine groups for chemisorption or noble metal nanoclusters that catalytically oxidize HCHO to CO 2 and H 2 O [37,55,59]. The addition of amine groups has also been shown to improve uptake of NO 2 onto AC and other porous adsorbents in separate studies [60,61].…”

Section: Methodsmentioning

confidence: 99%

“…AC_COMP_1 has the form of active carbon pellets. Due to the RE behavior characterized here and energy-dispersive X-ray spectroscopy (EDXS) analysis, it is thought to be a catalyst supported on AC [28,47,55]. This type of material has been reported in the literature with various metals and metal oxides supported on AC.…”

Section: Compositesmentioning

confidence: 99%

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Novel Materials for Combined Nitrogen Dioxide and Formaldehyde Pollution Control under Ambient Conditions

Russell

Bonomaully²,

Bossi

et al. 2020

Catalysts

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Formaldehyde (HCHO) and nitrogen dioxide (NO2) often co-exist in urban environments at levels that are hazardous to health. There is a demand for a solution to the problem of their combined removal. In this paper, we investigate catalysts, adsorbents and composites for their removal efficiency (RE) toward HCHO and NO2, in the context of creating a pollution control device (PCD). Proton-transfer-reaction mass spectrometry and cavity ring-down spectrometry are used to measure HCHO, and chemiluminescence and absorbance-based monitors for NO2. Commercially available and lab-synthesized materials are tested under relevant conditions. None of the commercial adsorbents are effective for HCHO removal, whereas two metal oxide-based catalysts are highly effective, with REs of 81 ± 4% and 82 ± 1%, an improvement on previous materials tested under similar conditions. The best performing material for combined removal is a novel composite consisting of a noble metal catalyst supported on a metal oxide, combined with a treated active carbon adsorbent. The composite is theorized to work synergistically to physisorb and oxidize HCHO and chemisorb NO2. It has an HCHO RE of 72 ± 2% and an NO2 RE of 96 ± 2%. This material has potential as the active component in PCDs used to reduce personal pollution exposure.

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Section: Compositesmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

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Novel Materials for Combined Nitrogen Dioxide and Formaldehyde Pollution Control under Ambient Conditions

Russell

Bonomaully²,

Bossi

et al. 2020

Catalysts

View full text Add to dashboard Cite

show abstract

“…Meanwhile, adsorption isotherms provide important information about the adsorption capacity of the adsorbent as a function of adsorbate partial pressure in the gas phase. According to the literature [21][22][23][24][25][26][27][28][29][30], there are two major adsorption isotherm models describing formaldehyde behaviors on ACs (ACF or surface-modified ACs): the Langmuir model and the Freundlich model. These models depend on the surface properties, the pore structure of adsorbents, and adsorption conditions.…”

Section: Thermodynamics and Adsorption Isothermsmentioning

confidence: 99%

A Brief Review of Formaldehyde Removal through Activated Carbon Adsorption

Kang

Jang

et al. 2022

Applied Sciences

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Formaldehyde is a highly toxic indoor pollutant that can adversely impact human health. Various technologies have been intensively evaluated to remove formaldehyde from an indoor atmospheres. Activated carbon (AC) has been used to adsorb formaldehyde from the indoor atmosphere, which has been commercially viable owing to its low operational costs. AC has a high adsorption affinity due to its high surface area. In addition, applications of AC may be diversified by the surface modification. Among the different surface modifications for AC, amination treatments of AC have been reported and evaluated. Specifically, the amine functional groups of the amine-treated AC have been found to play an important role in the adsorption of formaldehyde. Surface modifications of AC by impregnating and/or grafting the amine functional groups onto the AC surface have been reported in the literature. The impregnation of the amine-containing species on AC is mainly achieved by physical interaction or H-bond of the amines to the AC surface. Meanwhile, the grafting of the amine functional groups is mainly conducted through chemical reactions occurring between the amines and the AC surface. Herein, the carboxyl group, as a representative functional group for grafting on the surface of AC, plays a key role in the amination reactions. A qualitative comparison of amination chemicals for the surface modification of AC has also been discussed. Thermodynamics and kinetics for adsorption of formaldehyde on AC are firstly reviewed in this paper, and then the major factors affecting the adsorptive removal of formaldehyde over AC are highlighted and discussed in terms of humidity and temperature. In addition, new strategies for amination, as well as the physical modification option for AC application, are proposed and discussed in terms of safety and processability.

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“…Adsorption is the best waste water treatment method due to many advantages over such as its universal nature, inexpensiveness and ease of operation. Activated carbons (ACs) have been considered for the adsorption of formaldehyde [3][4][5], intrinsic and Al-doped graphene [6], heat-treated rice husks [5], activated carbon fibers (ACFs) [7], karamatsu (Larix leptolepis) bark [8], kaolin and bentonite [9], treated activated carbon and activated alumina [10], activated carbon with addition of Ag nanoparticle [11] and modified zeolites [12] are reported for formaldehyde removal. We have selected the polymeric resin (Amberlite IRA-910).…”

Section: Introductionmentioning

confidence: 99%

Removal of Formaldehyde from Aqueous Solution by Polymeric Resin

Memon¹

2019

Pak. J. Anal. Environ. Chem.

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Formaldehyde (HCHO) is the most common aldehyde in the environment. It is widely present in aquatic and air environment as one of environmental pollutants. It is commonly used for manufacturing building materials and various household products. Now, it has become a matter of concern because it is mutant and carcinogenic, and an irritant to eyes and skin, therefore its removal from water is very important. Adsorption has an edge over the other techniques due to its simplicity, cost effectiveness, less time consuming and environmental friendly behavior. In present study, adsorption efficiency of Amberlite IRA-910 has been examined. Relevant parameters such as pH, adsorbent dose, adsorbate concentration, shaking speed, volume and shaking time have been studied thoroughly. Ultraviolet-visible spectroscopy was used to determine the formaldehyde content in the water. The isothermal study was carried out using the Langmuir, Freundlich and D-R isotherm. Results showed that Amberlite IRA-910 has better adsorption efficiency for the removal of formaldehyde at lower as well as higher concentrations. The thermodynamic and kinetic parameters have also been calculated.

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Adsorptive Removal of Formaldehyde by Chemically Bamboo Activated Carbon with addition of Ag nanoparticle: Equilibrium and Kinetic

Cited by 6 publications

References 10 publications

Novel Materials for Combined Nitrogen Dioxide and Formaldehyde Pollution Control under Ambient Conditions

Novel Materials for Combined Nitrogen Dioxide and Formaldehyde Pollution Control under Ambient Conditions

A Brief Review of Formaldehyde Removal through Activated Carbon Adsorption

Removal of Formaldehyde from Aqueous Solution by Polymeric Resin

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