阳离子淀粉/壳聚糖交联共聚物的制备及絮凝性能。
Preparation and flocculation properties of cationic starch/chitosan crosslinking-copolymer.
机构信息
Department of Chemistry, College of Science, Huazhong Agricultural University, Wuhan 430070, China.
出版信息
J Hazard Mater. 2009 Dec 15;172(1):38-45. doi: 10.1016/j.jhazmat.2009.06.120. Epub 2009 Jun 30.
A novel flocculant (CATCS) based on corn starch and chitosan was prepared and its flocculation behaviors were studied. The synthesis conditions of CATCS were discussed and the production obtained was characterized using Fourier infrared spectra and scanning electron microscopy. Flocculation properties of the products were evaluated in terms of transmittance, removal of organic contaminant and solid suspending substances. Influences of temperature, pH and flocculant dosage on flocculation efficiency of CATCS were examined. CATCS had better flocculation performance at lower temperature for the wastewater investigated. CATCS showed better flocculation performance than cationic starch and chitosan in 5 g/L kaolin suspension trended to performance well in acidic and alkaline solution. The comparison of the flocculation performance between CATCS, Fe2(SO4)3 and polyacrylamide showed CATCS had much efficient flocculation performance. In addition, cationic starch was prepared from corn starch using microwave-assisted method.
基于玉米淀粉和壳聚糖的新型絮凝剂（CATCS）被制备出来，并研究了其絮凝行为。讨论了 CATCS 的合成条件，使用傅里叶变换红外光谱和扫描电子显微镜对得到的产物进行了表征。通过透光率、去除有机污染物和固体悬浮物来评价产物的絮凝性能。考察了温度、pH 值和絮凝剂用量对 CATCS 絮凝效率的影响。对于所研究的废水，CATCS 在较低温度下具有更好的絮凝性能。在 5 g/L 高岭土悬浮液中，CATCS 的絮凝性能优于阳离子淀粉和壳聚糖，且在酸性和碱性溶液中表现良好。将 CATCS、Fe2(SO4)3 和聚丙烯酰胺的絮凝性能进行比较，结果表明 CATCS 的絮凝性能更高。此外，还使用微波辅助法从玉米淀粉制备了阳离子淀粉。
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