scholarly journals Adsorption of acetaldehyde from air by activated carbon and carbon fibers

2021 ◽  
Vol 27 (2) ◽  
pp. 200549-0
Author(s):  
Soohyung Park ◽  
Muhammad Yaqub ◽  
Seunghan Lee ◽  
Wontae Lee
Keyword(s):  
Composite Material ◽  
Activated Carbon ◽  
Composite Materials ◽  
Carbon Fibers ◽  
Selective Absorption ◽  
Activated Carbon Fibers ◽  
Adsorption Efficiency ◽  
Dry Conditions ◽  
Dry And Wet Conditions ◽  
Coated Carbon

The adsorption of acetaldehyde from air using various activated carbon and carbon fibers was investigated in this study. These adsorbents included activated carbon (AC), carbon fibers (CFs), activated carbon fibers (ACFs), and metal-coated carbon fibers (MCCFs) supplied by different manufacturers. AC was categorized as AC1, AC2, AC3, and AC4, CFs were denoted as ACF1, while ACFs and MCCFs were expressed as ACF2 and ACF3, respectively. Five composite materials were prepared using the AC and ACFs in different ratios, and experiments were conducted to assess their acetaldehyde adsorption efficiency under dry and wet conditions. The results showed that the acetaldehyde adsorption efficiency of an impregnated AC4 was higher (95.9%) than that of both non-impregnated AC1 and AC3 and an impregnated AC2 after 1 min of operation. ACF2 showed a higher acetaldehyde adsorption efficiency (50.9%) as compared to ACF1 and ACF3 because of its larger surface area and selective absorption capability after 1 min of operation. A composite material comprising 6.3 g of AC4 and 1 g of ACF2 showed the highest adsorption efficiency of 97.9% under dry conditions. However, this adsorption efficiency significantly decreased under wet conditions.

New composite materials based on activated carbon fibers with specific adsorption and catalytic properties

2018 ◽  
Vol 5 (12) ◽  
pp. 25997-26001 ◽  
Author(s):  
Larisa A. Zemskova ◽  
Andrey P. Artemyanov ◽  
Alexey V. Voit ◽  
Daria Kh. Shlyk
Keyword(s):  
Activated Carbon ◽  
Composite Materials ◽  
Carbon Fibers ◽  
Catalytic Properties ◽  
Specific Adsorption ◽  
Activated Carbon Fibers

scholarly journals Evaluation of radon adsorption efficiency values in xenon with activated carbon fibers

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Y Nakano ◽  
K Ichimura ◽  
H Ito ◽  
T Okada ◽  
H Sekiya ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Adsorption Property ◽  
Noble Gas ◽  
Activated Carbon Fibers ◽  
Adsorption Efficiency ◽  
Adsorption Ability ◽  
Uranium Series ◽  
Adsorption Performance ◽  
Ar Gas

Abstract The radioactive noble gas radon-222 ($\mathrm{^{222}Rn}$) produced in the uranium series is a crucial background source in many underground experiments. We have estimated the adsorption property of Rn with activated carbon fibers (ACFs) in air, argon, and xenon gas. We evaluated six ACFs, named A-7, A-10, A-15, A-20, A-25, and S-25, provided by Unitika Ltd. We measured the intrinsic radioactivity of these ACF samples, and found A-20’s radioactivity of the uranium series to be $<5.5$  $\mathrm{mBq/kg}$ with $90\%$ confidence level. In air and Ar gas, we found that ACF A-15 has an adsorption efficiency of $1/10000$ reduction at maximum before saturation of Rn adsorption, and more than $97\%$ adsorption efficiency after the saturation. In Xe gas, we found that ACF A-20 has the best Rn adsorption ability among the tested ACFs. We also found that S-25, A-25, and A-15 have similar Rn adsorption performance.

Oxidation of Activated Carbon Fibers:  Effect on Pore Size, Surface Chemistry, and Adsorption Properties

1999 ◽  
Vol 11 (12) ◽  
pp. 3476-3483 ◽  
Author(s):  
Christian L. Mangun ◽  
Kelly R. Benak ◽  
Michael A. Daley ◽  
James Economy
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Pore Size ◽  
Carbon Fibers ◽  
Adsorption Properties ◽  
Activated Carbon Fibers

Visualized observation of pores in activated carbon fibers by HRTEM and combined image processor

1998 ◽  
Vol 5 (3-4) ◽  
pp. 261-266 ◽  
Author(s):  
M. Endo ◽  
T. Furuta ◽  
F. Minoura ◽  
C. Kim ◽  
K. Oshida ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Image Processor

Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation

2012 ◽  
Vol 184-185 ◽  
pp. 1110-1113 ◽  
Author(s):  
Li Fen He ◽  
Qi Xia Liu ◽  
Tao Ji ◽  
Qiang Gao
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Phosphoric Acid ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Jute Fibers ◽  
Activating Agent

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.

HCl removal using activated carbon fibers electroplated with silver

Carbon ◽  
2004 ◽  
Vol 42 (10) ◽  
pp. 2113-2115 ◽  
Author(s):  
Soo-Jin Park ◽  
Sung-Yeol Jin
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Hcl Removal

Effect of air oxidation of Rayon-based activated carbon fibers on the adsorption behavior for formaldehyde

Carbon ◽  
2002 ◽  
Vol 40 (13) ◽  
pp. 2291-2300 ◽  
Author(s):  
Haiqin Rong ◽  
Zhenyu Ryu ◽  
Jingtang Zheng ◽  
Yuanli Zhang
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Adsorption Behavior ◽  
Activated Carbon Fibers ◽  
Air Oxidation
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