An Overview of the Development of Membrane Science and Technology in Our Country

Thread Content

An overview of the development of membrane science and technology in China. Research in membrane science in China began in 1958 with studies on ion exchange membranes. The 1960s was a pioneering phase, with research on reverse osmosis beginning in 1965; the 1970s marked the development stage, during which various membrane and device types such as electrodialysis, reverse osmosis, ultrafiltration, and microfiltration were successively researched and developed. The 1980s saw the entry into a phase of widespread application, and it was also a period for the development of gas separation and other new membrane processes. For details, see below. The development history of membrane science in our country in the 20th century. Names of key development stages and their main contents: Microfiltration: The CN-CA membrane was developed in the 1970s. In the 1980s: CA, CA-CTA, PS, PVDF, nylon membranes, pleated cartridge filters with PP membranes, PET, PC nuclear track membranes. Inorganic membranes in the 1990s, PTFE, PP stretched membranes; ultrafiltration: CA membranes in the 1970s. PS hollow fiber and spiral-wound membranes in the 1980s–1990s, charged membranes, alloy membranes, inorganic membranes, and high-temperature resistant retention membranes. Study membrane fouling. Electrodialysis: Research began in 1958. Industrialization of heterogeneous membranes in 1967. In the 1970s, various ion exchange membranes were developed, and electrodialysis was scaled up. The development of perfluorinated ion exchange membranes began in 1976. Homogeneous membranes reached a certain scale in the 1980s. Reverse osmosis: Research on modified CA membranes began in 1965. In 1968, the CA asymmetric membrane was developed successfully. In the 1970s and 1980s, spiral and hollow fiber modules were developed successfully. Research on nanofiltration membranes began in the 1980s. In the 1990s, reverse osmosis-nanofiltration composite membranes were developed, as well as low-pressure CA-CTA membranes. Dialysis: Plate-and-frame dialyzers and PAN hollow-fiber dialyzers were developed in the 1970s to 1990s. Gas separation: Research on PS hollow-fiber membranes began in the early 1980s. In 1985, the PS hollow fiber device was successfully developed. In 1987, the SR-PS reeler was successfully developed. Various new materials were developed in the 1980s and 1990s. The separation processes of H2/N2, O2/N2, H2O/CH4, CO2/CH4, H2O/air, and CO/H2, as well as the separation of H2 on Pd-ceramic composite membranes, were studied and developed using PS and PI membranes. Osmotic vaporization: Ethanol dehydration and esterification dehydration of membranes such as cross-linked PVA and chitosan have been studied since the 1980s. Liquid film: Research began in 1979. It has been preliminarily applied in the separation of phenol, rare earth metals, and CN-. Membrane reaction: Research began in the mid-1980s. In the early 1990s, hollow-fiber cell immobilization reactors and high-density animal cell culture devices were developed successfully. In the 1980s and 1990s, various high-temperature gas-phase catalytic reactions were studied using inorganic membranes, such as cyclohexane dehydrogenation, ethylbenzene dehydrogenation, and methanol hydrolysis. Other research was conducted in the late 1980s on membrane distillation, membrane extraction, membrane electrodes, and affinity membrane separation. This post was last edited by chc1125 on 2008-11-11 10:48.]