Application of Fibrous Activated Carbon Filter in Continuous-Flow Unit for Removal of Volatile Organic Compounds under Simulated Indoor Conditions

Jo, Wan-Kuen; Hu, Chun

doi:10.4209/aaqr.2013.02.0057

Cited by 14 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Extrapolation of ethylbenzene and o-xylene curves resulted in adsorptive capacities 0.2 and 0.3 µg/g for ethylbenzene and o-xylene, respectively. These values are much lower than 1.8 and 8.9 mg/g for benzene and toluene, respectively, as reported by Wan-Kuen Jo et al [40]. Activated charcoal adsorbed all BTEX during one week of the experiment.…”

Section: Adsorption Of Btex In Dynamic Modementioning

confidence: 74%

Adsorption of Benzene, Toluene, Ethylbenzene and o-Xylene by Carbon-Based Adsorbents

et al. 2016

View full text Add to dashboard Cite

This study explored the possibility of applying different carbon-based adsorbents for removal of benzene, toluene, ethylbenzene and o-xylene (BTEX) from indoor air in static and dynamic modes. To determine BTEX removal effectiveness, the approach based on solid-phase microextraction (SPME) in combination with gas chromatography -mass spectrometry (GC-MS) was used. In static mode, removal effectiveness of BTEX from indoor air using different carbon-based adsorbents (shungite, walnut shell, saxaul, apricot pits, activated charcoal, Tenax, carbon black) varied from 80% to 100%. Optimal preparation conditions for shungite-based adsorbent are no activation and addition of NaOH at 1:0.8 ratio. Shungite-based adsorbent was not able to remove BTEX from polluted indoor air at the flow rate 300 mL/min corresponding to the linear flow rate 25 cm/s, a minimum value for most commercial air purification systems. At the flow rate 75 mL/min (6.25 cm/s), a saturation time of shungite-based adsorbent made up 368 min for benzene and 437 min for toluene. At this flow rate, BTEX adsorption capacities of the shungitebased adsorbent were 0.3, 2.1, 0.2 and 0.3 µg/g, respectively. Compared to shungite, activated charcoal allowed the complete removal of BTEX at both flow rates in the whole studied time frame. Thus, shungite-based adsorbents are not recommended for BTEX removal from air because of much greater efficiencies of classic activated charcoal adsorbents. Applied methodology based on SPME-GC-MS allowed simple, fast and inexpensive collection of data and can be recommended as the analytical tool for developing new adsorbents and systems for air purification.

show abstract

Section: Adsorption Of Btex In Dynamic Modementioning

confidence: 74%

Adsorption of Benzene, Toluene, Ethylbenzene and o-Xylene by Carbon-Based Adsorbents

et al. 2016

View full text Add to dashboard Cite

show abstract

“…There are several VOCs in indoor air environment such as BTX (benzene, toluene xylene), trichloroethylene and dichloromethane [4]. During long term exposure may pose adverse health effect related to human respiratory systems (such as asthma, throat irritation, lung cancer), headache, poor memory, eyes, nose and also skin irritation [5,6]. In order to decrease the pollutant, some researchers have been conducting their methods for controlling the VOC such as adsorption, condensation, Photocatalytic oxidation (PCO), negative air ions (NAIs) and non-thermal plasma (NTP) [4].…”

Section: Introductionmentioning

confidence: 99%

Indoor Air Contaminant Adsorption By Palm Shell Activated Carbon Filter – A Proposed Study

et al. 2016

View full text Add to dashboard Cite

Abstract. Indoor air contaminant is a public issue. High Volatile Organic Compound (VOC), Carbon monoxide (CO), Carbon dioxide (CO 2 ), and particulate matter is becoming main issue that needs to solve. Therefore, this study focus on improving indoor air quality by using activated carbon (AC) for Ventilation and Air-Conditioning (VAC). It investigated because AC is widely explored but developing AC as a filter for VAC is not developed yet. The AC prepared by physical and chemical activation process and combination both of process and it was activated by H 3 PO 4 and NaOH. Characterization and analysis process are consists of water content, ash content, bulk density, adsorption capacity, iodine number and indoor air filtering analysis. Treated activated carbon potential in achieving higher surface area of the structure to the range of 950 to 1150 m 2 /g for gas phase application. The higher surface area will adsorb more air pollution. Maintained properties of activated carbon such as hardness, density, pore, extractable ash, particle size (12 by 40 mesh) and pH are becoming the main concern in achieving high quality of activated carbon.

show abstract

“…Thus, a high SSA is considered a major factor in the removal of VOCs. Activated carbon (AC) with a high SSA has been widely used as the adsorbent for removing VOCs (Jo andChun, 2014, Shah et al, 2014), but it is expensive. The production of AC requires carbonization and activation.…”

Section: Introductionmentioning

confidence: 99%

Sorption of Volatile Organic Compounds on Organic Substance-Modified Titanate Nanotubes

Wang

Peng

Chao

2015

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

This study investigates the removal of volatile organic compounds (VOCs) from the air through the use of organic substance-modified titanate nanotubes (TNTs). The TNTs were derived from TiO 2 through a hydrothermal method, and were modified using hexadecyltrimethylammonium bromide and octadecyltrichlorosilane (OTS) to change the surface hydrophilicity to hydrophobicity. The properties of the TNT and modified TNT were characterized through scanning electron microscopy , transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, contact angle measurements, and nitrogen adsorption-desorption isotherms. The fabricated adsorbents were used to remove the VOCs of toluene, ethylbenzene 1,1,2-trichloroethane, and tetrachloroethene in the air. The adsorption amounts of the VOCs were estimated using the Thomas equation. The results revealed that adsorbent modification raised the adsorption capacities of these VOCs, which also grew with increasing surface hydrophobicity. The aromatic compounds accumulated easily in the pores to generate relatively high adsorption amounts. VOCs adsorbed on the TNT surface or partitioned into the organic substance on TNTs. The adsorption amounts of VOCs on the OTSmodified TNTs were higher than those on commercial activated carbon. The results imply that organic substance-modified TNTs can effectively remove VOCs in the air and become excellent adsorbents.

show abstract

Application of Fibrous Activated Carbon Filter in Continuous-Flow Unit for Removal of Volatile Organic Compounds under Simulated Indoor Conditions

Cited by 14 publications

References 27 publications

Adsorption of Benzene, Toluene, Ethylbenzene and o-Xylene by Carbon-Based Adsorbents

Adsorption of Benzene, Toluene, Ethylbenzene and o-Xylene by Carbon-Based Adsorbents

Indoor Air Contaminant Adsorption By Palm Shell Activated Carbon Filter – A Proposed Study

Sorption of Volatile Organic Compounds on Organic Substance-Modified Titanate Nanotubes

Contact Info

Product

Resources

About