摘要
利用壳聚糖与香草醛反应生成的希夫碱壳聚糖(VCG),通过在其一级羟基上进行交联,制备出壳聚糖缩香草醛螯合树脂(S-VCG)。用红外光谱对其结构进行表征,并研究其对重金属离子Cu2+和Pb2+的吸附特性。结果表明:壳聚糖缩香草醛螯合树脂(S-VCG)对Cu2+的平衡吸附时间4h,最大吸附量的pH≈3.2,吸附量约为43.1mg/g,对Pb2+平衡吸附时间5h,最大吸附量的pH≈4,吸附量约为110mg/g。S-VCG具有较强的抗酸性。
Modified chitosan （VCG） is prepared via Schiff＇s reaction, on the basis of which, adsorbent（S-VCG） is prepared by adding epichlorohydrin. Their structures are identified by IR and the adsorbent is investigated in relation to its adsorption behavior for Cu^2＋ and Pb^2＋, as well as the effect of pH and time. The results indicate that the equilibrium time of adsorption for Cu^2＋ , Pb^2 are 4h and 5h, respectively, the pH value corresponding to the highest adsorption capacity of the adsorbent is 3.2 for Cu^2＋ and the adsorption capacity is 43.1 mg/g, for Pb^2＋ the pH value is 4 and the adsorption capacity is 110mg/g. Besides, S-VCG is strongly antacid.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第B05期153-156,共4页
Periodical of Ocean University of China
关键词
壳聚糖
希夫碱
交联
吸附
chitosan
schiff bases
crosslink
adsorption
作者简介
张艳雅（1981-）,女,硕士生。
马启敏,责任作者：E-mail：maqimin@ouc．edu．cn
