With the objective to assess the suitability of cellulose acetate (CA), polysulfone (PSF) and silica (SiO₂) for wastewater treatment, this work presents the results of preparation and characterization of PSF blended CA hybrid filtration membranes (CA/PSF) as well as PSF blended and SiO₂ embedded CA hybrid adsorption membranes (CA/PSF-SiO₂) for copper(II), iron(II) and zinc(II) ions removal from contaminated aqueous solutions. The membranes were prepared by phase inversion, using granules of CA, PSF and SiO₂ dissolved in N, N dimethyl formamide (DMF). From the scanning electron microscopy (SEM) used to determine the morphology of the membranes, different pore sizes are seen at their rough surfaces and cross sections. The porosity and pore sizes of the membranes, determined by differentiation varied from 26.8 ± 0.3 to 81.1 ± 0.3 µm and 1.26 to 1.38%, respectively. The contact angles of the membranes ranged between 49° and 76° on their glass side while their ranged between 56° and 77° on their air side. The hybrid filtration polymer membranes allowed the uptake of more than 90% of the metal ions initially present in the contaminated solutions which were concentrated at 40 mg L⁻¹. Adsorption experiments were carried out with CA/PSF-SiO₂ membranes. The adsorption capacity of these compounds was shown to be higher than numerous other literature-known adsorbents, reaching 70 mg g⁻¹ for CA/PSF 85/15-SiO₂ towards Cu^(II). Finally, by coupling adsorption with ultrafiltration in the tangential mode, the removal of Cu^(II), Fe(II) and Zn(II) was found to be improved, allowing to reach a removal efficiency of 95% towards Cu^(II) at a metal concentration of 60 mg L⁻¹, and a promising removal efficiency around 98% at a very high metal concentration of 900 mg L⁻¹.

为了评估乙酸纤维素（CA），聚砜（PSF）和二氧化硅（SiO ₂）在废水处理中的适用性，本工作介绍了PSF混合CA混合滤膜（CA / PSF）的制备和表征结果，其结果如下：以及PSF混合和SiO ₂嵌入的CA复合吸附膜（CA / PSF-SiO ₂），用于从受污染的水溶液中去除铜（II），铁（II）和锌（II）离子。通过将CA，PSF和SiO ₂颗粒溶解在N，N中二甲基甲酰胺（DMF）。根据用于确定膜形态的扫描电子显微镜（SEM），可以在其粗糙表面和横截面看到不同的孔径。通过微分确定的膜的孔隙率和孔径分别从26.8±0.3到81.1±0.3 µm和1.26到1.38％不等。膜在其玻璃侧的接触角在49°至76°之间，而在其空气侧的接触角在56°至77°之间。混合过滤聚合物膜可吸收最初存在于受污染溶液中的90％以上的金属离子，这些溶液以40 mg L ^-1的浓度浓缩。用CA / PSF-SiO ₂进行吸附实验膜。这些化合物的吸附容量显示出比许多其他文献已知的吸附剂更高的吸附容量，对于CA / PSF 85 / 15-SiO ₂对Cu ^（II）达到70 mg g ^-1。最后，通过在切向模式下将吸附与超滤耦合，发现对Cu ^（II），Fe（II）和Zn（II）的去除得到了改善，从而在90℃时对Cu ^（II）的去除效率达到了95％。金属浓度为60 mg L ^-1，在900 mg L ^-1的极高金属浓度下，去除效率有望达到98％左右。