Solute Displacement and Pore Blockage Phenomena in Hybrid Sorption-Membrane Processes

本研究的目的是对粉末活性炭（PAC）竞争吸附微量有机化合物的孔隙堵塞和溶质位移机制有一个基本的了解。这些信息将用于建立这些效应的方程，这些方程将被纳入混合吸附-膜过程的数学模型中。吸附研究将使用模型化合物或探针，以及天然有机物（NOM）进行。多孔吸附剂中的竞争效应将首先使用探针数据为PAC/膜系统建模。在使用探针验证模型后，将测试模型的一般形式对NOM/痕量化合物竞争吸附的适用性。本研究结果可为大规模混合吸附-膜工艺去除水中痕量有机化合物的优化设计和操作提供建议。＊＊＊

0123281 Marinas The objective of the proposed research is to develop a fundamental understanding of the pore blockage and solute displacement mechanisms of competitive adsorption of trace organic compounds on powdered activated carbon (PAC). This information will be used to develop equations for these effects that will be incorporated into mathematical models of hybrid sorption-membrane processes. Adsorption studies will be conducted using model compounds or probes, as well as with natural organic matter (NOM). The competitive effects in porous adsorbents will be modeled for the PAC/membrane system using the probe data first. After the model has been verified using probes, the general form of the model will be tested for applicability to NOM/trace compound competitive adsorption. The results of this research could be used to develop recommendations for the optimum design and operation of full-scale hybrid sorption-membrane processes for the removal of trace organic compounds from water. ***