غشای اولترافیلتراسیون اصلاح شده برای کاربردهای دارویی و میکروبی

This invention is the synthesis of a new type of functionalized pectin, the compound pyrazole/pectin (PCPT) was identified by SEM, XRD, FT-IR and EDX analyses. Then it was included in polyethersulfone (PES) nanofiltration membrane in different concentrations. All the modified membranes showed a higher pure water flux compared to the unmodified membrane. In the best case, the pure water flux value of 22.43 kg/m2 was obtained for the composite membrane with 0.3% by weight of functionalized pectin, which has the highest average pore size, porosity, surface hydrophilicity, smoothness and negative charge among all the membranes. shows. For the modified membranes, the salt return increased significantly as Na2SO4 ˃ NaCl and confirmed the behavior of the nanofiltration membrane. For the optimal membrane, the percentage of direct red-16 and crystal violet (CV) dye removal was 99.82 and 98.24%, respectively, and the permeate flux was 40.2 and 40.1 kg/m2, respectively. The removal rate of heavy metals for the unmodified membrane was 31, 32 and 32.5%, respectively, while it was 98.09, 98.32 and 98.63% for the optimized membrane.