The Dynamic Behavior of Water Vapor on Activated Carbon

Abstract

Water vapor is present, usually in relatively large concentrations, in many adsorption systems of industrial and military interest. This work develops an approach to predict the dynamic behavior of water vapor on an activated carbon adsorbent. Prior studies have neglected the importance of including the heat balance to account for behavior to high relative humidities. Water vapor isotherms were measured for BPL carbon at 15, 25, and 35 C, and the data were correlated using a modified version of the Antoine Equation first suggested by LeVan. Breakthrough experiments were performed using the following initial bed and feed conditions: (1) 50% RH feed to a dry bed, (2) 80% RH feed to a bed initially equilibrated at 50% RH, and (3) 80% RH feed to a dry bed. Two mathematical models were developed to analyze the values predicted using a non- isothermal stage model with a fluid phase mass transfer resistance and a adiabatic equilibrium theory model.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1989
Accession Number
ADA206124

Entities

People

  • David K. Friday
  • John J. Mahle

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Classification
  • Differential Equations
  • Energy
  • Equations
  • Heat Capacity
  • Heat Energy
  • Heat Transfer
  • Heat Transfer Coefficients
  • Isotherms
  • Mass Transfer
  • Materials
  • Mathematical Models
  • Models
  • Resistance
  • Security
  • Vapors
  • Water Vapor

Readers

  • Agricultural Chemistry/Soil Science
  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation