Evaluation of various activated carbons for air cleaning – Towards design of immune and sustainable buildings

Haghighat, Fariborz; Lee, Chang-Seo; Pant, Bhuvan; Bolourani, Golnoush; Lakdawala, Ness; Bastani, Arash

doi:10.1016/j.atmosenv.2008.07.061

Cited by 76 publications

(37 citation statements)

References 10 publications

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“…On the other hand, the breakthrough of activated carbon fiber occurred immediately after adsorption started. Such results are consistent with the basic prior research observation that if the specific surface area of activated carbon goes down, the specific surface area for adsorption decreases as well (Haghighat et al, 2008;Kingsley and Davidson, 116 Asian Journal of Atmospheric Environment, Vol. 5(2), 113-120, 2011 The control efficiency of granular activated carbon with the largest specific surface area stood at around 75%, a figure relatively higher than ones of constructed carbon or activated carbon fiber in terms of NO 2 , as the toluene test results showed (Fig.…”

Section: Effects Of Adsorbentssupporting

confidence: 81%

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Son¹,

Kang²,

Chung³

et al. 2011

Asian J. Atmos. Environ

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Adsorbent combination studies have been carried out to remove nitrogen dioxide (NO 2 ) and volatile organic compounds (VOCs: BTEX) out of a subway environment characterized by high flow and low concentration. Optimal conditions for the high removal efficiency of the concerned target compounds were obtained through testing a series of control factors such as adsorbent sorts, thicknesses, and superficial velocity. It was found that the efficiencies increased as the specific surface area of activated carbon and its thickness increased, and external void fraction decreased. Furthermore, mixed activated carbon with granular and constructed contents was extensively tested to reduce pressure drop through the carbon bed. It was found that the performance of higher contents of granular activated carbon was better than that of higher contents of the constructed carbon. When the mixed carbon was applied to the subway ventilation system in order to eliminate NO 2 and VOC simultaneously, the removal efficiencies were found to be 75% and 85%, respectively.

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Section: Effects Of Adsorbentssupporting

confidence: 81%

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Son¹,

Kang²,

Chung³

et al. 2011

Asian J. Atmos. Environ

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“…Adsorption process is one of the most efficient and safest processes to remove VOCs from indoor air (Bastani et al, 2010;Benne and Griffith, 2009 erative properties (Huang et al, 2010;Yao et al, 2009a;Haghighat et al, 2008;Das et al, 2004). ACF is generally made from rayon, polyacrylonitrile (PAN), or phenolic resin (Huang et al, 2010).…”

Section: Activated Carbon Fiber (Acf)mentioning

confidence: 99%

A Review of Some Representative Techniques for Controlling the Indoor Volatile Organic Compounds

Kabir¹,

Kim²

2012

Asian J. Atmos. Environ

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“…Formaldehyde has been categorized as a group 1 carcinogen by the International Agency for Research on Cancer. Moreover, a high concentration of formaldehyde has been reported in the indoor environments (Brown, 2000;Khoder, 2006;Mantanis, 2007;Haghighat et al, 2008;Bastani et al, 2010;An et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Production of sugarcane bagasse-based activated carbon for formaldehyde gas removal from potted plants exposure chamber

Mohamed

El‐Hashemy

Abdel‐Latif

et al. 2015

Journal of the Air & Waste Management Association

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Agricultural wastes such as rice straw, sugar beet, and sugarcane bagasse have become a critical environmental issue due to growing agriculture demand. This study aimed to investigate the valorization possibility of sugarcane bagasse waste for activated carbon preparation. It also aimed to fully characterize the prepared activated carbon (BET surface area) via scanning electron microscope (SEM) and in terms of surface functional groups to give a basic understanding of its structure and to study the adsorption capacity of the sugarcane bagasse-based activated carbon using aqueous methylene blue (MB). The second main objective was to evaluate the performance of sugarcane bagasse-based activated carbon for indoor volatile organic compounds removal using the formaldehyde gas (HCHO) as reference model in two potted plants chambers. The first chamber was labeled the polluted chamber (containing formaldehyde gas without activated carbon) and the second was taken as the treated chamber (containing formaldehyde gas with activated carbon). The results indicated that the sugarcane bagasse-based activated carbon has a moderate BET surface area (557 m 2 /g) with total mesoporous volume and microporous volume of 0.310 and 0.273 cm 3 /g, respectively. The prepared activated carbon had remarkable adsorption capacity for MB. Formaldehyde removal rate was then found to be more than 67% in the treated chamber with the sugarcane bagasse-based activated carbon. The plants' responses for this application as dry weight, chlorophyll contents, and protein concentration were also investigated.Implications: Preparation of activated carbon from sugarcane bagasse (SCBAC) is a promising approach to produce cheap and efficient adsorbent for gas pollutants removal. It may be also a solution for the agricultural wastes problems in big cities, particularly in Egypt. MB adsorption tests suggest that the SCBAC have high adsorption capacity. Formaldehyde gas removal in the plant chambers indicates that the SCBAC have potential to recover volatile gases. The results confirmed that the activated carbon produced from sugarcane bagasse waste raw materials can be used as an applicable adsorbent for treating a variety of gas pollutants from the indoor environment.

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Evaluation of various activated carbons for air cleaning – Towards design of immune and sustainable buildings

Cited by 76 publications

References 10 publications

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

A Review of Some Representative Techniques for Controlling the Indoor Volatile Organic Compounds

Production of sugarcane bagasse-based activated carbon for formaldehyde gas removal from potted plants exposure chamber

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