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包含许多有机蒸气 以及一系列相对湿度。 无法实验 确定一切可能的呼吸器突破性表现 蒸气混合物的组合。 对 需要蒸气混合物吸附的物理化学相互作用是 为了正确建模激活的碳床行为，需要。 数据 该建议生成的生成将用于评估和修改现有 呼吸器服务生活模型。 这些研究的目的是评估有机的吸附 蒸气混合在活化的碳上。 实验被设计为 评估吸附平衡和动力学。 二进制蒸气混合物 包含各种不同的极性和官能团 将评估三种不同的湿度。 数据将进行分析 使用Dubinin平衡模型的参数和Wheeler动力学 模型。 这些参数包括平衡吸附亲和力 系数，能力以及动力率常数和能力。 还提出了使用二氧化硅凝胶的吸附研究。 吸附到 硅胶是一种极性吸附剂，将有助于确定极地的作用 吸附的力并评估硅胶的适用性 吸附剂。 成功完成该项目将提供更基本的 了解复杂的有机蒸气混合物的吸附 活性炭和二氧化硅凝胶。