Quantitative Evaluation of the Effect of Moisture Contents of Coconut Shell Activated Carbon Used for Respirators on Adsorption Capacity for Organic Vapors
Quantitative Evaluation of the Effect of Moisture Contents of Coconut Shell Activated Carbon Used for Respirators on Adsorption Capacity for Organic Vapors
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DOI：
10.2486/indhealth.48.52
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发表时间：
2010-01-01
影响因子：
2
通讯作者：
Takano, Tsuguo
中科院分区：
文献类型：
--
作者：
Abiko, Hironobu;Furuse, Mitsuya;Takano, Tsuguo
活性炭是用于卫生应用的基本材料，特别是作为有害气体和蒸汽的吸附剂。在日本的工业和职业卫生中，以椰壳为原料生产的活性炭由于其优异的吸附能力和成本优势，是一种传统的和受欢迎的吸附材料。在本研究中，为了详细阐明初始水分含量对吸附容量的影响，我们制备了几种椰壳活性炭，它们通过在不同相对湿度下与水分平衡来预处理。我们测量了它们对6种有机蒸气的吸附容量作为穿透时间，并试图确定活性炭样品对有机蒸气的吸附容量的降低与水吸附的相对重量增加之间的关系。本文所提出的湿效应定量评价方法及其结果对活性炭的实际应用，特别是作为吸附剂在工作场所的应用具有一定的参考价值。
Activated carbon is an elemental material used for hygienic applications, particularly as an adsorbent for harmful gases and vapors. In Japanese industrial and occupational hygiene, activated carbon produced from coconut shell is a traditional and popular adsorbent material due to its excellent adsorption ability and cost advantage. In this research, in order to clarify the effect of the preliminary content of moisture on the adsorption capacity in detail, we prepared several coconut shell activated carbons which were preconditioned by equilibration with moisture at different relative humidities. We measured their adsorption capacities as breakthrough times for 6 kinds of organic vapor, and attempted to determine the relationships between the relative weight increase of water adsorption and the decrease of adsorption capacities of the activated carbon specimens for the organic vapors. The procedure of the quantitative evaluation of the effect of moisture and the results are useful for practical applications of activated carbon, particularly those used as adsorbents in workplaces.