Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Surface-modified activated carbon with β-cyclodextrin—Part II. Adsorption properties
Sorption properties of surface modified activated carbon (AC) with p-nitrophenol (PNP) and methylene blue (MB) in aqueous solution were investigated. The calculated surface areas for AC and surface modified AC were compared using nitrogen sorption and a dye-based method. The surface areas of AC and the surface modified AC with glutaraldehyde (AC-β-CD) (1:10:10(9)) and 1,4-phenylene diisocyanate (ACPDICD) measured by nitrogen sorption were 1,269 m2/g, 103 m2/g, and 95 m2/g, respectively (Langmuir model) and 956 m2/g, 74 m2/g, and 69 m2/g (BET model), respectively. However, the calculated surface areas for the dye-based method (PNP; pH 6.00) for AC, AC-β-CD(1:10:10(9)), and ACPDICD was 1,035 m2/g, 814 m2/g, and 76 m2/g (Langmuir model), respectively and 1,491 m2/g, 1,669 m2/g, and 92 m2/g (BET model), respectively. The corresponding surface areas for the dye-based method (MB; pH 8.40) for AC-β-CD(1:10:10(9)) and ACPDICD was 263 m2/g and 171 m2/g (Langmuir model), respectively and 1019 m2/g and 182 m2/g (BET model), respectively. The sorption capacity (Qm) and binding affinity characteristics [KF(L/g), KL(g/mol), and KBET(L/g)] were estimated at room temperature at equilibrium conditions using several sorption isotherm models.
Surface-modified activated carbon with β-cyclodextrin—Part II. Adsorption properties
Sorption properties of surface modified activated carbon (AC) with p-nitrophenol (PNP) and methylene blue (MB) in aqueous solution were investigated. The calculated surface areas for AC and surface modified AC were compared using nitrogen sorption and a dye-based method. The surface areas of AC and the surface modified AC with glutaraldehyde (AC-β-CD) (1:10:10(9)) and 1,4-phenylene diisocyanate (ACPDICD) measured by nitrogen sorption were 1,269 m2/g, 103 m2/g, and 95 m2/g, respectively (Langmuir model) and 956 m2/g, 74 m2/g, and 69 m2/g (BET model), respectively. However, the calculated surface areas for the dye-based method (PNP; pH 6.00) for AC, AC-β-CD(1:10:10(9)), and ACPDICD was 1,035 m2/g, 814 m2/g, and 76 m2/g (Langmuir model), respectively and 1,491 m2/g, 1,669 m2/g, and 92 m2/g (BET model), respectively. The corresponding surface areas for the dye-based method (MB; pH 8.40) for AC-β-CD(1:10:10(9)) and ACPDICD was 263 m2/g and 171 m2/g (Langmuir model), respectively and 1019 m2/g and 182 m2/g (BET model), respectively. The sorption capacity (Qm) and binding affinity characteristics [KF(L/g), KL(g/mol), and KBET(L/g)] were estimated at room temperature at equilibrium conditions using several sorption isotherm models.
Surface-modified activated carbon with β-cyclodextrin—Part II. Adsorption properties
Kwon, Jae H. (Autor:in) / Wilson, Lee D. (Autor:in)
Journal of Environmental Science and Health, Part A ; 45 ; 1793-1803
01.10.2010
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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