ADSORPTION OF VAPOR MIXTURES ONTO ACTIVATED CARBON

蒸气混合物吸附到活性炭上

• 批准号: 3068988
• 负责人: Patrick N Breysse
• 金额: $ 5.4万
• 依托单位: JOHNS HOPKINS UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-28 至 1994-05-27
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3068988
• 关键词: adsorption; carbon; chemical group; chemical reaction; environmental contamination; gel; humidity; molecular polarity; occupational hazard; silicates; vapor

Complex industrial environments typically contain numerous organic vapors and a range of relative humidities. It is not possible to experimentally determine respirator breakthrough performance for every possible combination of vapor mixtures. A fundamental understanding of the physicochemical interaction of adsorption of vapor mixtures is needed is needed in order to properly model activated carbon bed behavior. Data generated by this proposal will be used to evaluate and modify existing respirator service-life models. The purpose of these investigations is to evaluate adsorption of organic vapor mixtures onto activated carbon. Experiments are designed to evaluate adsorption equilibria and kinetics. Binary vapor mixtures containing a variety of different polarities and functional groups at three different humidities will evaluated. The data will be analyzed using parameters of the Dubinin equilibrium model and the Wheeler kinetic model. These parameters include, equilibrium adsorption affinity coefficients and capacities and kinetic rate constants and capacities. Adsorption studies using silica gel are also proposed. Adsorption onto silica gel, a polar adsorbent, will help to determine the role of polar forces in adsorption and to evaluate the suitability of silica gel as an adsorbent. Successful completion of this project will provide a more fundamental understanding of adsorption of complex organic vapor mixtures onto activated carbon and silica gel.

复杂的工业环境通常含有大量有机蒸气 和一系列相对湿度。 不可能通过实验 确定呼吸器突破性性能的每一个可能 蒸气混合物的组合。 对以下内容有一个基本的了解 蒸气混合物吸附所需的物理化学相互作用是 为了正确模拟活性炭床行为所需的。 数据 该提案产生的结果将用于评估和修改现有的 呼吸器使用寿命模型。 这些研究的目的是评估有机物的吸附 蒸气混合物到活性炭上。 实验旨在 评估吸附平衡和动力学。 二元蒸气混合物 含有多种不同极性和官能团 将评估三种不同的湿度。 数据将被分析 使用杜宾宁平衡模型和惠勒动力学的参数 模型。 这些参数包括平衡吸附亲和力 系数和容量以及动力学速率常数和容量。 还提出了使用硅胶的吸附研究。 吸附到 硅胶是一种极性吸附剂，将有助于确定极性的作用 吸附力并评估硅胶作为吸附剂的适用性 吸附剂。 该项目的顺利完成将为 了解复杂有机蒸气混合物的吸附 活性炭和硅胶。