Ashraf Tarek, Alfryyan Nada, Ashraf Abdallah M, Ahmed Sayed A, Shaban Mohamed
Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
Polymers (Basel). 2022 Mar 29;14(7):1390. doi: 10.3390/polym14071390.
Nanofiltration methods were used and evaluated for strontium removal from wastewater. The phase inversion method was used to create a variety of polyethersulfone (PES)/TiO nanoribbons (TNRs)-multi-walled carbon nanotubes (MWCNTs) membranes with varied ratios of TNR-MWCNT nanocomposite. The hydrothermal technique was applied to synthesize the nanocomposite (TNRs-MWCNTs), which was then followed by chemical vapor deposition (CVD). The synthesized membranes were characterized by scanning electron microscopy (SEM), transmission electron microscopy, and FTIR. TNR macrovoids are employed as a support for the MWCNT growth catalyst, resulting in a TNR-MWCNT network composite. The hydrophilicity, mechanical properties, porosity, filtration efficiency of the strontium-containing samples, water flux, and fouling tendency were used to assess the performance of the synthesized membranes. The effect of feed water temperature on water flux was investigated as well as its effect on salt rejection. As the temperature increased from 30 to 90 °C, the salt rejection decreased from 96.6 to 82% for the optimized 0.7 PES/TNR-MWCNT membrane, whereas the water flux increased to ≈150 kg/m. h. Double successive filtration was evaluated for its high efficiency of 1000 ppm strontium removal, which reached 82.4%.
采用纳滤方法从废水中去除锶并进行评估。采用相转化法制备了多种具有不同比例的钛酸锶纳米带（TNRs）-多壁碳纳米管（MWCNTs）的聚醚砜（PES）膜。采用水热技术合成纳米复合材料（TNRs-MWCNTs），然后进行化学气相沉积（CVD）。通过扫描电子显微镜（SEM）、透射电子显微镜和傅里叶变换红外光谱（FTIR）对合成的膜进行表征。TNR大孔用作MWCNT生长催化剂的载体，形成TNR-MWCNT网络复合材料。利用亲水性、力学性能、孔隙率、含锶样品的过滤效率、水通量和污染倾向来评估合成膜的性能。研究了进水温度对水通量的影响及其对脱盐率的影响。对于优化后的0.7 PES/TNR-MWCNT膜，随着温度从30℃升高到90℃，脱盐率从96.6%降至82%，而水通量增加到约150 kg/m²·h。对连续两次过滤去除1000 ppm锶的高效性进行了评估，去除率达到82.4%。
