Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）,...Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）, which led to the formation of the complexes. The prepared complexes were characterized with Infrared Spectroscopy （IR）, Ultra Violet （UV）, fluorescence, X-Ray Diffraction （XRD）, and Thermogravimetric-Differential Scanning Calorimetry （TG-DSC） measurements.展开更多
Continuous hydrolysis of chitosan was performed in a convolutedfibrous bed bioreactor (CFBB) with immobilized t. reesei. At dilutionrate of 0.4 d^-1 and substrate concentration of 2/100 (mass vs.Volume), the average d...Continuous hydrolysis of chitosan was performed in a convolutedfibrous bed bioreactor (CFBB) with immobilized t. reesei. At dilutionrate of 0.4 d^-1 and substrate concentration of 2/100 (mass vs.Volume), the average degree of polymerization of hydrolysate can bekept at 1.25-1.35, which can be easily regulated by changing dilutionrate or inlet chitosan concentration.展开更多
基金Project supported by the Natural Science Foundation of Education Department of Jiangsu Province (07KJA108017)Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection (JLCBE07028)
文摘Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）, which led to the formation of the complexes. The prepared complexes were characterized with Infrared Spectroscopy （IR）, Ultra Violet （UV）, fluorescence, X-Ray Diffraction （XRD）, and Thermogravimetric-Differential Scanning Calorimetry （TG-DSC） measurements.
基金Supported by the National Natural Science Foundation of China (No. 29876036).
文摘Continuous hydrolysis of chitosan was performed in a convolutedfibrous bed bioreactor (CFBB) with immobilized t. reesei. At dilutionrate of 0.4 d^-1 and substrate concentration of 2/100 (mass vs.Volume), the average degree of polymerization of hydrolysate can bekept at 1.25-1.35, which can be easily regulated by changing dilutionrate or inlet chitosan concentration.
