实验室试验比较了几种原始和活化颗粒活性炭（GAC）的孔径分布及其对几种吸附质的水相吸附能力。孔径表征采用密度泛函理论（DFT）模型解释的N2吸附等温线。这些结果与作者采用的Barrett、Joyner和Halenda模型进行了比较。新开发的DFT模型为水相吸附行为提供了更好的相关性，尽管它在8-12埃的孔隙宽度范围内也表现出明显的异常。对于本研究中使用的煤基活性炭，提供最大吸附容量的孔径与吸附质的尺寸密切相关； 小分子化合物吸附与微孔体积的相关性最强，大分子染料吸附与中孔+大微孔体积的相关性最强。当DFT孔体积分布的适当范围与染料或对硝基苯酚的吸附容量相比较时，测定系数超过0.95。包括34个参考文献、表格、图表。

Laboratory tests compared several virgin and reactivated granular activated carbons (GACs) with regard to pore-size distributions versus their water-phase adsorption capacity for several adsorbates. Pore-size characterizations employed N2 adsorption isotherms, as interpreted by the density functional theory (DFT) model. These were compared with previous results that employed the Barrett, Joyner, and Halenda model, as adapted by the authors. The newly developed DFT model offered better correlations to water-phase adsorption behavior, although it also exhibited an apparent anomaly in the 8-12-Angstrom pore-width range. For the coal-based GACs used in this study, the pore sizes that provided the greatest adsorption capacity correlated well with the dimensions of the adsorbates; small-compound adsorption correlated most strongly with micropore volume, and larger dye adsorption correlated most strongly with mesopore plus large micropore volume. Coefficients of determination exceeded 0.95 when the appropriate range of DFT pore-volume distribution was compared with dye or p-nitrophenol adsorption capacity. Includes 34 references, tables, figures.