The Effects of Aging on the Dynamic Adsorption of Hazardous Organic Vapors on Impregnated Activated Carbon

被引：10

作者：

Amitay-Rosen, Tal ^{[1
]}

Leibman, Amir ^{[1
]}

Nir, Ido ^{[1
]}

Zaltsman, Amalia ^{[1
]}

Kaplan, Doron ^{[1
]}

机构：

[1] Israel Inst Biol Res, Dept Phys Chem, IL-74100 Ness Ziona, Israel

来源：

JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE | 2015年 / 12卷 / 02期

关键词：

physisorption; protective capacity; vapor breakthrough; RELATIVE-HUMIDITY; WATER-ADSORPTION; METHANOL; SURFACE; DESORPTION; CAPACITY; MOISTURE; BEHAVIOR; AIR; BREAKTHROUGH;

D O I：

10.1080/15459624.2014.955180

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of an eight-year natural aging of ASC impregnated activated carbon on the adsorption capacity and breakthrough times of model organic vapors and of the nerve agent sarin were investigated. Aging delayed methanol breakthrough from dry air on pre-dried carbon, but shortened the breakthrough time of both methanol and hexane under relative humidity (RH) of 30-85% on pre-humidified carbon. Aging also shortened the breakthrough time of the less volatile model compound 2-methoxyethanol, especially under RH of 60-85%. Aging significantly reduced the protection capacity against sarin at RH of 85%. The effects of aging on physisorption are attributed to enhanced hydrogen-bonding capability and strength of the interaction between water and adsorption sites on the carbon surface.

引用

页码：130 / 137

页数：8

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