本研究调查了孔隙体积损失和总有机碳（TOC）吸附 在全尺寸水处理过程中使用的原始和活化颗粒活性炭（GAC）。孔隙体积变化 在每个接触器的几个深度进行了研究。上部深度的孔隙体积随着时间的推移而减少 孔隙大小范围很广，而孔隙体积损失发生在中、低深度 主要是在微孔中。微孔中的吸附力本质上最强，因为 两种孔壁对天然有机物（NOM）都有吸引力。相应地，到达 中层和较低层的固有特征是对GAC的亲和力较低 表面，需要双重- 壁吸附。此外，重新激活的 GAC的特点是在100-500？范围内有相当大的孔隙体积损失，其中 吸附本质上是高吸附分子的单壁吸附。 综合数据集有助于实现质量/体积平衡 通过NOM计算出的受试者去除量 和流出物），与孔隙中损失的孔隙体积和lt500？宽度（通过氩吸附监测） 测试）。这两个体积基本上是相等的，这是观察到的每一个体积 本文测试了五种加载条件。 包括19个参考文献、表格、图表。

This research investigates pore volume losses and total organic carbon (TOC) adsorption in virgin and reactivated granular activated carbon (GAC) used during full-scale water treatment. Pore volume changes were studied at several depths within each contactor. Pore volume at upper depths was lost over a wide range of pore sizes, whereas pore volume losses at middle and lower depths occurred primarily in the micropores. Adsorptive forces are inherently strongest in micropores because both pore walls exert an attractive potential on natural organic matter (NOM). Correspondingly, NOM that reached the middle and lower depths would inherently be characterized by a lower affinity for the GAC surface, necessitating double-wall adsorption. Furthermore, the upper depths of the reactivated GACs were characterized by considerable pore volume losses in the 100-500¿ range, where adsorption would inherently represent single-wall adsorption of highly adsorbable molecules. The comprehensive data set has facilitated a mass/volume balance that compared computed volume of NOM removed through the GAC contactors, (monitored via TOC influent and effluent), versus pore volume lost in pores <500¿ width (monitored via argon adsorption tests). These two volumes essentially equaled one another, and this was observed for each of the five loading conditions that were tested herein. Includes 19 references, table, figures.