Adsorption dynamics of trichlorofluoromethane in activated carbon fiber beds.

Clicks: 295
ID: 2930
2011
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Abstract
Adsorption on carbon fixed-beds is considered as an inexpensive and highly effective way for controlling chlorofluorocarbons (CFCs) emissions. In the present work, a dynamic model under constant-pattern wave conditions has been developed to predict the breakthrough behavior of trichlorofluoromethane (CFC-11) adsorption in a fixed bed packed with activated carbon fibers (ACFs). The adsorption of CFC-11 vapor onto viscose-based ACFs was performed in a fixed bed at different test conditions. The results showed that, in a deep bed (>120 mm), the analytical model based on the external mass transfer with the Langmuir isotherm could describe the adsorption dynamics well. The model parameters, the characteristic breakthrough time and the film mass-transfer coefficients are related to such operating parameters as the superficial gas velocity, feed concentration and bed height. It was found from the breakthrough dynamics that the mass transfer from the fluid phase to the fiber surface dominated the CFC-11 adsorption onto ACFs in fixed beds.
Reference Key
zhang2011adsorptionjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Xiaoping;Zhao, Xin;Hu, Jiaqi;Wei, Chaohai;Bi, Hsiaotao T;
Journal Journal of hazardous materials
Year 2011
DOI
10.1016/j.jhazmat.2010.12.064
URL
Keywords Keywords not found

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