Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2010 Nov;45(13):1793-803. doi: 10.1080/10934529.2010.513292.
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) (1:10:10⁹) 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(1:10:10⁹), 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(1:10:10⁹) 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 (Q(m)) and binding affinity characteristics [K(F)(L/g), K(L)(g/mol), and K(BET)(L/g)] were estimated at room temperature at equilibrium conditions using several sorption isotherm models.
研究了表面改性活性炭（AC）对水中对硝基苯酚（PNP）和亚甲基蓝（MB）的吸附性能。通过氮吸附和基于染料的方法比较了 AC 和用戊二醛（AC-β-CD）（1:10:10⁹）和 1,4-亚苯基二异氰酸酯（ACPDICD）表面改性的 AC 的计算表面积。通过氮吸附测量的 AC 和用戊二醛（AC-β-CD）（1:10:10⁹）和 1,4-亚苯基二异氰酸酯（ACPDICD）表面改性的 AC 的表面积分别为 1,269 m²/g、103 m²/g 和 95 m²/g（朗缪尔模型）和 956 m²/g、74 m²/g 和 69 m²/g（BET 模型），而基于染料的方法（PNP；pH 6.00）的计算表面积分别为 1,035 m²/g、814 m²/g 和 76 m²/g（朗缪尔模型）和 1,491 m²/g、1,669 m²/g 和 92 m²/g（BET 模型）。对于 AC-β-CD（1:10:10⁹）和 ACPDICD，基于染料的方法（MB；pH 8.40）的相应表面积分别为 263 m²/g 和 171 m²/g（朗缪尔模型）和 1019 m²/g 和 182 m²/g（BET 模型）。在室温下，在平衡条件下，使用几种吸附等温线模型估计了吸附容量（Q(m)）和结合亲和力特性[K(F)(L/g)、K(L)(g/mol)和 K(BET)(L/g)]。
