Charcoal Regeneration. Part 1. Mechanism of TNT Adsorption PDF Download
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Author: Thomas C. Castorina Publisher: ISBN: Category : Languages : en Pages : 55
Book Description
The interaction of TNT with the surface of activated carbon (FS300) has been studied via adsorption isotherms of TNT and water, surface area determinations and electron spectroscopy for chemical analysis (ESCA). The rate and extent of adsorption of TNT is strongly dependent on the particle size of FS300 and hence on the diffusion rate, and independent of pH and temperature. The process of deactivation of the carbon surface is shown to involve progressive irreversible occlusion of the microporous structure with each successive adsorption/desorption (with acetone) cycle. The irreversibility of TNT adsorption is attributed to chemical interaction and a mechanism for the deactivation of the carbon surface is postulated.
Author: Thomas C. Castorina Publisher: ISBN: Category : Languages : en Pages : 55
Book Description
The interaction of TNT with the surface of activated carbon (FS300) has been studied via adsorption isotherms of TNT and water, surface area determinations and electron spectroscopy for chemical analysis (ESCA). The rate and extent of adsorption of TNT is strongly dependent on the particle size of FS300 and hence on the diffusion rate, and independent of pH and temperature. The process of deactivation of the carbon surface is shown to involve progressive irreversible occlusion of the microporous structure with each successive adsorption/desorption (with acetone) cycle. The irreversibility of TNT adsorption is attributed to chemical interaction and a mechanism for the deactivation of the carbon surface is postulated.
Author: Jerome Haberman Publisher: ISBN: Category : Languages : en Pages : 33
Book Description
Trinitrotoluene (TNT) and cyclotrimethylenetrinitramine (RDX), pink water, adsorption/solvent desorption cycling of activated carbon (FS300) has been studied as a function of various pretreatments. In agreement with previous studies of TNT and RDX individually, preferential plugging of pores by pretreatments did not improve the solvent regeneration of the FS300. The study of the competitive adsorption of TNT and RDX indicated that, at the higher concentrations, TNT tended to displace RDX from the carbon surface. This is attributed to a lower binding energy of the adsorbed RDX to the surface. In conjunction with water adsorption/desorption isotherms, the characteristics of a carbon with improved cycling properties have been elucidated. These properties are in agreement with those characteristics found in previous studies and involve a shift to a larger pore volume, increased concentration of pores in the mesopore range and an increased ratio of pore opening to pore body diameters. Another desirable property would be a lower adsorption binding energy for these explosives to the activated carbon.
Author: Jerome Haberman Publisher: ISBN: Category : Languages : en Pages : 51
Book Description
Cyclotrimethylenetrinitramine (RDX) adsorption and solvent desorption cycling of activated carbon (FS300) have been studied as a function of various pretreatments. As with a previous TNT study, preferential plugging of pores by pretreatments did not enhance the regeneration of the FS300. Using water adsorption/desorption isotherms, the characteristics of a carbon with improved cycling properties has been elucidated. These properties are in agreement with those characteristics previously found in the study with TNT and are based to a shift to a larger pore volume, increased numbers of pore body diameters in the mesopore range, and an increase in the ratio of pore opening to pore diameter. The mechanism of RDX adsorption on FS300 has been elucidated and compared to that of TNT.
Author: J. Haberman Publisher: ISBN: Category : Languages : en Pages : 65
Book Description
The TNT adsorption/solvent desorption cycling of activated carbon (FS300) has been studied as a function of various pretreatments. The preferential plugging of pores by the pretreatments did not enhance the regenerative property of the FS300. In conjunction with water adsorption/ desorption isotherms, the characteristics of a carbon with an improved cycling property has been elucidated. The improved property is due to a shift to larger pore volume and a larger ratio of pore opening to pore body diameters. Chemical regeneration of an activated carbon containing irreversible adsorbed TNT has been shown to be unfeasible.
Author: Thomas C. Castorina
Author: Thomas C. Castorina
Author: Jerome Haberman
Author: 
Author: Jerome Haberman
Author: J. Haberman
Author: Jerome Haberman
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Author: Seymour M. Kaye
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