用于直接接触式膜蒸馏的人造多壁碳纳米管/聚苯乙烯纳米纤维膜的数值研究

Numerical Investigation of Fabricated MWCNTs/Polystyrene Nanofibrous Membrane for DCMD.

作者信息

Elrasheedy Asmaa, Rabie Mohammed, El-Shazly Ahmed, Bassyouni Mohamed, Abdel-Hamid S M S, El Kady Marwa F

机构信息

Chemical and Petrochemicals Engineering Department, Egypt-Japan University of Science and Technology (E-JUST), Alexandria 21934, Egypt.

Department of Chemical Engineering, Faculty of Engineering, Port Said University, Port Said 42526, Egypt.

出版信息

Polymers (Basel). 2021 Jan 4;13(1):160. doi: 10.3390/polym13010160.

The effect of compositing multiwalled carbon nanotubes (MWCNTs) with polystyrene (PS) to fabricate nanofibrous membrane by electrospinning technique and comparing the direct contact membrane distillation (DCMD) performance of the blank and composite membranes is evaluated numerically. Surface morphology of both the pristine and the composite membrane was studied by SEM imaging while the average fiber diameter and average pore size were measured using ImageJ software. Static water contact angle and porosities were also determined for both membranes. Results showed significant enhancement in both the hydrophobicity and porosity of the composite membrane by increasing the static water contact angle from 145.4° for the pristine PS membrane to 155° for the PS/MWCNTs composite membrane while the porosity was increased by 28%. Simulation results showed that at any given feed inlet temperature, the PS/MWCNTs membrane have higher permeate flux and better overall system performance.

通过静电纺丝技术将多壁碳纳米管（MWCNTs）与聚苯乙烯（PS）复合制备纳米纤维膜，并比较空白膜和复合膜的直接接触膜蒸馏（DCMD）性能，进行了数值评估。通过扫描电子显微镜（SEM）成像研究了原始膜和复合膜的表面形态，同时使用ImageJ软件测量了平均纤维直径和平均孔径。还测定了两种膜的静态水接触角和孔隙率。结果表明，复合膜的疏水性和孔隙率均显著提高，原始PS膜的静态水接触角为145.4°，而PS/MWCNTs复合膜的静态水接触角为155°，孔隙率增加了28%。模拟结果表明，在任何给定的进料入口温度下，PS/MWCNTs膜具有更高的渗透通量和更好的整体系统性能。