The membrane-based CO2 separation process has an advantage compared to traditional CO2 separation technologies. The membrane is the key of the membrane separation process. In this paper, preparation, characterization ...The membrane-based CO2 separation process has an advantage compared to traditional CO2 separation technologies. The membrane is the key of the membrane separation process. In this paper, preparation, characterization and laboratory testing of the membrane, which was prepared from sodium alginate, hydrogen bond cross-linked with sodium tartrate and used for CO2/N2 separation, were reported. The resistance to SO2 of the membrane was also investigated. The experimental results demonstrate that the membrane possesses a high resistance to SO2.Finally,based on experimental results, the economic feasibility of the membrane used for CO2/N2 separation was evaluated,indicating the two-stage membrane process can compete with the traditional chemical absorption method.展开更多
A novel bead form of ploymer of high sorption capacity for urea were obtained by the reaction of glutaric dialdehyde wigh chitosan dispersed in acetic acid solution. The sorption capacity reached ￣ 82.0 mg / g sorbe...A novel bead form of ploymer of high sorption capacity for urea were obtained by the reaction of glutaric dialdehyde wigh chitosan dispersed in acetic acid solution. The sorption capacity reached ￣ 82.0 mg / g sorbent at 37℃ and pH 7.4 The concentration of urea in the buffer solution was 1300 mg/ L. The sorption of urea was related to the degree of crosslinking of the sorbent, concentration ofurea, ionic strength and temperature.展开更多
基金Supported by the National Natural Science Foundation of China （20836006）, the National Basic Research Program （2009CB623405）, the Science ＆ Technology Pillar Program of Tianjin （10ZCKFSH01700）, the Programme of Introducing Talents of Discipline to Universities （B06006） and the Cheung Kong Scholar Program for Innovative Teams of the Ministry of Education （IRT064.1）.
文摘The membrane-based CO2 separation process has an advantage compared to traditional CO2 separation technologies. The membrane is the key of the membrane separation process. In this paper, preparation, characterization and laboratory testing of the membrane, which was prepared from sodium alginate, hydrogen bond cross-linked with sodium tartrate and used for CO2/N2 separation, were reported. The resistance to SO2 of the membrane was also investigated. The experimental results demonstrate that the membrane possesses a high resistance to SO2.Finally,based on experimental results, the economic feasibility of the membrane used for CO2/N2 separation was evaluated,indicating the two-stage membrane process can compete with the traditional chemical absorption method.
文摘A novel bead form of ploymer of high sorption capacity for urea were obtained by the reaction of glutaric dialdehyde wigh chitosan dispersed in acetic acid solution. The sorption capacity reached ￣ 82.0 mg / g sorbent at 37℃ and pH 7.4 The concentration of urea in the buffer solution was 1300 mg/ L. The sorption of urea was related to the degree of crosslinking of the sorbent, concentration ofurea, ionic strength and temperature.
