Preparation of NaCl Particles Added Polyvinylidene Fluoride Microporous Filter and a Simple Filtration Device

Abstract

Clean and pollution-free water plays a crucial role in human metabolism and is essential for everyone’s daily life. However, with industrialization, a significant amount of sewage has been produced for many years. Water resources tend to become stressed when the rate of sewage production speed is purified. Many researchers are working on sewage purification to eliminate this hidden danger. It is urgent to find an efficient, high-speed, and environmental way to purify sewage. The objective of this study is to investigate the impact of pore morphology on filtration. In addition, a Polyvinylidene fluoride (PVDF)-microporous filter (MPF) based on non-solvent-induced phase separation (NIPS) and vapor-induced phase separation (VIPS) methods was designed, the morphology and properties of a series of sodium chloride particles (NaCl-ps) added PVDF-MPF was researched, and a simple semi-automatic filtration device based on the character of this PVDF-MPF was manufactured. According to the light transmittance of filtered sewage through PVDF-MPF and NaCl-ps added PVDF-MPF, both PVDF-MPFs can remove particles in sewage. However, after adding NaCl-ps, the purification capacity of PVDF-MPF is higher than that of PVDF-MPF without adding NaCl-ps. The addition of NaCl-ps changes the morphology and improves the sewage purification capacity of PVDF-MPF.