以壳聚糖为填充料制备壳聚糖/聚氨酯复合材料(CS/PU)作为吸附剂,用来吸附养殖水及工业废水中孔雀石绿(MG).通过对CS/PU的结构表征和再生能力的研究,结果表明:CS/PU的表观密度为68.1 kg·m-3,压缩强度为0.879 k Pa,开孔率为94.44%,...以壳聚糖为填充料制备壳聚糖/聚氨酯复合材料(CS/PU)作为吸附剂,用来吸附养殖水及工业废水中孔雀石绿(MG).通过对CS/PU的结构表征和再生能力的研究,结果表明:CS/PU的表观密度为68.1 kg·m-3,压缩强度为0.879 k Pa,开孔率为94.44%,比表面积为0.65 m2·g-1,热重分析(TGA)结果显示,CS/PU在高温下较稳定;利用60%的乙醇溶液对吸附MG的CS/PU进行脱附,再生次数可达5次以上.展开更多
Chitosan-montmorillonite(CS-MMT) hybrid was prepared and characterized by XRD,FTIR and TG.The results showed that chitosan was intercalated into the layer structure of Na+-montmorillonite.The ability of CS-MMT hybrid ...Chitosan-montmorillonite(CS-MMT) hybrid was prepared and characterized by XRD,FTIR and TG.The results showed that chitosan was intercalated into the layer structure of Na+-montmorillonite.The ability of CS-MMT hybrid as an adsorbent for the removal of reactive orange X-GN from aqueous solution has been studied.The effects of various parameters such as initial concentration and temperature were also studied.The Langmuir and Freundlich adsorption isotherms have been used to fit the experimental data,and the former giving the higher correlation.Thermodynamic parameters of the adsorption process,ΔG°,ΔH° and ΔS° were determined to be-24.90 kJ·mol-1(at 20℃),10.58 kJ·mol-1 and 121.0 J·mol-1·K-1,respectively.The results indicated that the adsorption of reactive orange X-GN on CS-MMT hybrid was spontaneous.展开更多
文摘以壳聚糖为填充料制备壳聚糖/聚氨酯复合材料(CS/PU)作为吸附剂,用来吸附养殖水及工业废水中孔雀石绿(MG).通过对CS/PU的结构表征和再生能力的研究,结果表明:CS/PU的表观密度为68.1 kg·m-3,压缩强度为0.879 k Pa,开孔率为94.44%,比表面积为0.65 m2·g-1,热重分析(TGA)结果显示,CS/PU在高温下较稳定;利用60%的乙醇溶液对吸附MG的CS/PU进行脱附,再生次数可达5次以上.
文摘Chitosan-montmorillonite(CS-MMT) hybrid was prepared and characterized by XRD,FTIR and TG.The results showed that chitosan was intercalated into the layer structure of Na+-montmorillonite.The ability of CS-MMT hybrid as an adsorbent for the removal of reactive orange X-GN from aqueous solution has been studied.The effects of various parameters such as initial concentration and temperature were also studied.The Langmuir and Freundlich adsorption isotherms have been used to fit the experimental data,and the former giving the higher correlation.Thermodynamic parameters of the adsorption process,ΔG°,ΔH° and ΔS° were determined to be-24.90 kJ·mol-1(at 20℃),10.58 kJ·mol-1 and 121.0 J·mol-1·K-1,respectively.The results indicated that the adsorption of reactive orange X-GN on CS-MMT hybrid was spontaneous.