Nayef Ghasem
UAE University
UAE
Title: Absorption/Stripping of CO2 using polymeric PVDF hollow fiber membrane contacting process
Biography
Biography: Nayef Ghasem
Abstract
Natural gas is the clean energy that has been extensively used for several purposes primarily in transportation and generation of electricity. The major constituents of natural gas are CH4 and CO2. The absorption/stripping of carbon dioxide is an important task in the operation of gas–liquid membrane contacting processes. The removal of CO2 from natural gas prior to use is essential. The presence of CO2 reduces the heating value of the natural gas and causes pipe corrosion. The conventional absorption processes are packed columns. The packed towers are usually large in size, require high investment cost and suffer from several operational limitations include flooding, entrainment and foaming. Recently hollow fiber membrane contactor has attracted the attention of many researchers. Absorption of CO2 takes place in a membrane contactor when the gas stream contacts with the liquid phase flowing on the opposite side of the membrane. Various absorbents on CO2 absorption/stripping were investigated; potassium glycinate (PG), monoethanolamide (MEA), di-ethanolamine (DEA), and 2-amino-2-methyl-1-propanol (AMP) were applied as absorbent/stripping solutions. The membrane used for the experiments was hollow fiber Polyvinylidenefluoride (PVDF) membrane fabricated via thermally induced phase separation method. The performances of various amine solutions on the CO2 absorption/stripping capability were investigated. CO2 stripping experiments revealed that regardless of type of solvent the CO2 stripping flux and efficiency rapidly increases with liquid temperature, pressure and initial CO2 concentration.