Yousefi Nader, Nabizadeh Ramin, Nasseri Simin, Khoobi Mehdi, Nazmara Shahrokh, Mahvi Amir Hossein
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran E-mail:
Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, Iran and Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Water Sci Technol. 2018 Mar;77(5-6):1558-1569. doi: 10.2166/wst.2018.037.
The aim of this study was to investigate membrane synthesis by interfacial polymerization methods, the application of synthesized nano-composite membrane for natural organic matters (NOMs) removal from water, evaluation of fouling mechanism and antifouling properties. Polysulfone (PSf) was selected as a porous ultrafiltration membrane support and interfacial polymerization was done using tannic acid (TA) and Trimesoyl chloride (TMC) with central composite design (CCD). The effects of TA and TMC monomer concentrations, reaction time and post treatment temperature was evaluated. The synthesized membrane was characterized by field emission scanning electron microscope (FESEM), atomic force microscopy (AFM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and water contact angle. Based on the results, the optimum conditions for synthesizing nano-composite were: TA concentration of 0.27 g/L, TMC concentration of 0.22 g/L, reaction time of 68.29 min and temperature of 25.23 °C. The predicted optimum operational conditions were a NOM concentration of 6.429 mg/L; time of 10.931 min and applied pressure of 1.039 bar. The potential applications of the synthesized nano-composite membranes with interfacial polymerization can enhance water treatment.
本研究的目的是研究通过界面聚合法进行膜合成、合成的纳米复合膜在去除水中天然有机物（NOMs）方面的应用、污垢形成机制评估及抗污垢性能。选用聚砜（PSf）作为多孔超滤膜支撑体，并采用单宁酸（TA）和均苯三甲酰氯（TMC）通过中心复合设计（CCD）进行界面聚合。评估了TA和TMC单体浓度、反应时间及后处理温度的影响。通过场发射扫描电子显微镜（FESEM）、原子力显微镜（AFM）、衰减全反射傅里叶变换红外光谱（ATR-FTIR）和水接触角对合成的膜进行了表征。结果表明，合成纳米复合材料的最佳条件为：TA浓度0.27 g/L、TMC浓度0.22 g/L、反应时间68.29 min和温度25.23℃。预测的最佳运行条件为：NOM浓度6.429 mg/L；时间10.931 min和施加压力1.039 bar。通过界面聚合合成的纳米复合膜的潜在应用可增强水处理效果。
