A systematic study is carried out to determine the optimum electrospinning preparation condition to prepare an adequate electrospun nanofibrous membrane (ENM) for direct contact membrane distillation (DCMD). A structural properties investigation of ENM was carried out because of the significant impact of its architectural structure, nanofiber diameter, inter-fiber space and ENM thickness, on DCMD performance. The morphology, hydrophobicity, mechanical properties, crystallinity and DCMD desalination were investigated. A long-term DCMD experiment (100h) was carried out using 30 g/L NaCl aqueous solution, both in the feed and permeate side of the optimum ENM membrane to evaluate its potential to produce drinkable water in case of lack of distilled water, for instance in a remote area, emergency situation, and/or portable system. In this case, drinkable water could be produced after 28 h with a permeate flux of 57.5 kg/m².h and a salt rejection factor greater than 99.9%. Another long-term DCMD experiment (65 h) was conducted using 30 g/L NaCl aquesous solution as feed but at a higher temperature and distilled water as permeate to evaluate the desalination stability, wettability and scaling of the optimum ENM. A permeate flux of 58.5 kg/m².h was obtained with a salt rejection factor greater than 99.9%.

进行了系统的研究，以确定最佳的静电纺丝制备条件，以制备用于直接接触膜蒸馏（DCMD）的足够的静电纺丝纳米纤维膜（ENM）。由于ENM的建筑结构，纳米纤维直径，纤维间空间和ENM厚度对DCMD性能的重大影响，因此进行了ENM的结构性能研究。研究了形貌，疏水性，机械性能，结晶度和DCMD脱盐率。长期DCMD实验（100小时）是在最佳ENM膜的进料侧和渗透侧均使用30 g / L NaCl水溶液进行的，以评估其在缺乏蒸馏水的情况下（例如在偏远地区，紧急情况下）产生饮用水的潜力和/或便携式系统。在这种情况下，可在28小时后生产出饮用水，其渗透通量为57.5 kg / m ² .h，除盐系数大于99.9％。使用30 g / L NaCl水溶液作为进料但在较高温度下和蒸馏水作为渗透液进行了另一个长期DCMD实验（65小时），以评估最佳ENM的脱盐稳定性，润湿性和结垢。获得的渗透通量为58.5 kg / m ² .h，除盐系数大于99.9％。