这项研究探讨了纳滤（NF）膜工艺作为一种新工艺的可能性 从地表水和废水中去除低水平选定抗生素的替代方案 给定不断变化的水条件，如pH值。实验室规模交叉流的初步结果 过滤试验表明，抗生素的排斥反应也高度依赖于膜孔径 由于带电的抗生素和细菌之间的静电相互作用不同，pH值也会发生变化 膜表面。应用扩展的能斯特-普朗克模型进一步理解 观测到的实验数据背后的尺寸排斥和静电机制。 包括19个参考文献、表格、图表。

This study addresses the possibility for nanofiltration (NF) membrane processes to serve as an alternative to remove low levels of selected antibiotics from surface waters and wastewaters given changing water conditions such as pH. Preliminary results from bench-scale cross-flow filtration tests suggest that antibiotic rejection is highly dependent on membrane pore size as well as changes in pH due to varying electrostatic interactions between the charged antibiotics and the membrane surface. The extended Nernst-Planck model was applied to further understand the size-exclusion and electrostatic mechanisms behind the observed experimental data. Includes 19 references, table, figures.