In this paper,the effect of testing temperature on the performance of fixed carrier membrane for CO_(2) separation were studied.The blend composite membranes were developed respectively with a blend of PEI-PVA(polyeth...In this paper,the effect of testing temperature on the performance of fixed carrier membrane for CO_(2) separation were studied.The blend composite membranes were developed respectively with a blend of PEI-PVA(polyetheleneimine-polyvinyl alcohol)as separation layer and PS(polysulfone)ultrafiltration membranes as the substrates.The permselectivity of the membranes was measured with CO_(2)/CH_(4) mixed gas.The effect of testing temperature on membrane separation performance was investigated.The results showed that both the permeances of CO_(2) and CH_(4) decreased with the increase of temperature,and the permeances decreased more quickly under low pressure than those under high pressure.At the feed pressure of 0.11 MPa,the CO_(2)/CH_(4) selectivity of PEI-PVA/PS blend composite membrane reduced along with temperature increment.Under the feed pressure of 0.21 MPa,as well as 1.11 MPa,the selectivity decreased with the increase of temperature.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.20836006)the National Basic Research Program(Nos.2006CB705800-4,2009CB623405)+1 种基金the Program for New Century Excellent Talents in University,the Cheung Kong Scholar Program for Innovative Teams of the Ministry of Education(No.IRT0641)the Programme of Introducing Talents of Discipline to Universities(No.B06006).
文摘In this paper,the effect of testing temperature on the performance of fixed carrier membrane for CO_(2) separation were studied.The blend composite membranes were developed respectively with a blend of PEI-PVA(polyetheleneimine-polyvinyl alcohol)as separation layer and PS(polysulfone)ultrafiltration membranes as the substrates.The permselectivity of the membranes was measured with CO_(2)/CH_(4) mixed gas.The effect of testing temperature on membrane separation performance was investigated.The results showed that both the permeances of CO_(2) and CH_(4) decreased with the increase of temperature,and the permeances decreased more quickly under low pressure than those under high pressure.At the feed pressure of 0.11 MPa,the CO_(2)/CH_(4) selectivity of PEI-PVA/PS blend composite membrane reduced along with temperature increment.Under the feed pressure of 0.21 MPa,as well as 1.11 MPa,the selectivity decreased with the increase of temperature.
