由微生物（黄杆菌和细菌）产生的可溶性微生物产品（SMP） 葡萄球菌（本研究中的葡萄球菌）是一种有机纳米胶体，可能会导致严重并发症 膜生物污染和低生物稳定性。该研究对SMP进行了各种表征，包括 SSF（尺寸、结构、功能）、红外光谱、DBPs和BDOC/AOC。SMP表现出较高的稳定性 分子量范围为30000至60000 g/mol。SMP的传质系数 在纳滤过程中，可以从浓度的角度提供非常有用的信息 两极分化。 Lee等人（2004年）通过实验测定了天然有机物的传质系数 使用舍伍德相关性对过滤过程中的物质（NOM）进行了实验。这项研究使用了两种方法 用不同的NF膜（MWCO<500道尔顿）测定SMP的传质系数 并将其与CDE模型确定的值进行比较。离子的扩散率和电迁移率 分别用扩散池法和毛细管电泳法测定SMP。这个 由斯托克斯-爱因斯坦方程计算的扩散率仅与分子大小有关；因此，本研究也 使用扩散池评估SMP在各种不同化学条件下的扩散率 （pH值、钙浓度）。该研究还对SMP的传质系数进行了比较 根据不同NF膜的表面形态。仅包含摘要。

The soluble microbial products (SMP) which are produced by microorganisms (Flavobacterium and Staphylococcus in this study) were known as one of the organic nano-colloids that may cause severe membrane bio-fouling and low bio-stability. The study conducted various characterizations of SMP including SSF (size, structure, functionality), IR spectra, DBPs, and BDOC/AOC. The SMP exhibited high molecular weight with ranging from 30,000 to 60,000 g/mol. The mass transfer coefficient of the SMP can provide very useful information during nanofiltration from the perspective of the concentration polarization. Lee et al.(2004) experimentally determined the mass transfer coefficient of natural organic matters (NOM) during filtration using Sherwood correlation experimentally. This study used two different NF membranes (MWCO < 500 Daltons) to determine the mass transfer coefficient of the SMP and compared that to the value determined by the CDE model. Both the diffusivity and electromobility of the SMP were determined by diffusion cell and capillary electrophoresis methods, respectively. The diffusivity calculated by the Stokes-Einstein equation was dependent only on molecular size; therefore, the study also used the diffusion cell to evaluate the diffusivity of the SMP under various different chemical conditions (pH, calcium concentration). The study also conducted a comparison of the mass transfer coefficient of the SMP in terms of surface morphology of different NF membranes. Includes abstract only.