在同时加载和早期预加载条件下，考察了溶解有机物、反应器结构和颗粒活性炭（GAC）粒径对三氯乙烯（TCE）平衡吸附的影响。当天然背景有机物和TCE同时吸附到非再加载的GAC上时，观察到使用间歇反应器和柱状反应器估算方法获得的等温线容量的差异。然而，当碳首次在没有TCE的情况下与河水中的背景有机物一起预加载时，两种方法得出的等温线差异减小。对于两种不同粒径的GAC，随着预加载时间的增加，等温线斜率显著增加。然而，使用从压碎的预加载GAC中筛出的粉末活性炭测定的等温线基本上具有平行的斜率，在所关注的浓度范围内，其容量大于母体预加载GAC。 在解释背景有机物、目标溶质和微孔吸附剂之间相互作用的二元模型的背景下，对观察到的效应进行了分析。包括46个参考文献、表格和图表。

The effects of dissolved organic matter, reactor configuration, and granular activated carbon (GAC) particle size on equilibrium adsorption of trichloroethylene (TCE) were examined under simultaneous loading and early preloading conditions. Differences in isotherm capacities obtained using batch-reactor and column-reactor estimation methods were observed when natural background organic matter and TCE were adsorbed simultaneously onto nonpreloaded GAC. Differences in isotherms derived from the two methods were diminished, however, when the carbon was first preloaded with the background organic matter in a river water in the absence of TCE. Significant increases in isotherm slope were observed with increasing preloading time for GAC of two different particle sizes. Isotherms determined using powdered activated carbon sieved from crushed preloaded GAC has essentially parallel slopes, however, with capacities greater than the parent preloaded GAC over the concentration range of interest. The observed effects were analyzed in the context of a proposed dualistic model for interpretation of interactions among background organic matter, target solutes, and microporous adsorbents. Includes 46 references, tables, figures.