GC determination of deposited pesticides in aerial application using activated carbon fiber paper for sample collection.

In Korea, concentrations of particulate matter (PM10) are significantly higher in urban railway tunnels (178.1 μg/m3) than in metropolitan areas (49 μg/m3). In railway tunnels in Korea, it was maintained at 3–4 times higher concentration than general atmosphere and platform. Dust generated by trains is scattered at high speed in these tunnels, making filtration difficult; therefore, the development of filters that can be maintained in tunnels is required. In the present study, we examined PM adsorption in the laboratory scale using activated carbon fiber (ACF), which has high adsorption and capacity. The ACF depth, velocity of flow, and fine PM concentration in the tunnel were the experimental variables. We compared PM concentrations before and after the filter experiments, and calculated removal efficiency to determine the optimal conditions. Comprehensive examination of the experimental variables and differential pressure showed that the optimal conditions for an ACF specimen were a wind speed of 3.0 m/s and the ACF depth of 400 mm. The average removal efficiency of PM10 was 55.5%, and that of PM2.5 was 36.6%. The reproducibility tests showed that the ACF filter could be washed and reused and is suitable for various places because it is easily maintained.

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Determination of Activated Carbon Fiber Adsorption Capacity for Several Common Organic Vapors: Applications for Respiratory Protection

Journal of the Air & Waste Management Association ◽

10.1080/10962247.2021.1985013 ◽

2021 ◽

Author(s):

Margaret Summers ◽

Jonghwa Oh ◽

Claudiu T. Lungu

Keyword(s):

Activated Carbon ◽

Carbon Fiber ◽

Adsorption Capacity ◽

Activated Carbon Fiber ◽

Respiratory Protection ◽

Organic Vapors

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Preparation and Properties of Kevlar or Polysulfonamide Pulp Reinforced Activated Carbon Fiber Paper

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1120-1121.654 ◽

2015 ◽

Vol 1120-1121 ◽

pp. 654-658

Author(s):

Qi Xia Liu ◽

Tao Ji ◽

Qiang Gao ◽

Li Rong Yao ◽

Fei Yan Wang ◽

...

Keyword(s):

Activated Carbon ◽

Carbon Fiber ◽

Adsorption Property ◽

Activated Carbon Fiber ◽

Plant Fiber ◽

Bursting Strength ◽

Paper Making ◽

Filtration Performance ◽

Carbon Fiber Paper ◽

Better Than

In this paper, Kevlar or Polysulfonamide (PSA) pulp were used to replace plant fiber pulp partially or completely and by adjusting their ratios and a variety of Kevlar or PSA pulp reinforced activated carbon fiber paper (ACFP) were prepared via wet-laid paper making technology. The influences of addition of Kevlar or PSA pulp on the permeability, mechanical property, filtration performance, adsorption property of ACFP were discussed by maintaining the addition content of activated carbon fiber unchanged. Results showed that with the addition content of Kevlar or PSA pulp increased, the permeability and filtration performance of ACFP decreased obviously, while the bursting strength and the static CCl4 adsorption performances were firstly increased and then decreased. Generally, the permeability and filtration performance of Kevlar pulp reinforced ACFP were slightly worse than that of PSA pulp reinforced ACFP, while the bursting strength as well as the static CCl4 adsorption properties of Kevlar pulp reinforced ACFP were better than that of PSA pulp reinforced ACFP.

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