摘要
壳聚糖的结构中含有大量的—NH2和—OH,因此其对重金属离子有优良的吸附作用。但是作为天然高分子物质,壳聚糖的吸附性能又受到其自身物理形态、原料来源、脱乙酰度及体系pH值的影响,因此,对其进行物理和化学改性是提高壳聚糖吸附性能、扩大应用范围的必要手段。本文综述了壳聚糖的改性方法及其衍生物对重金属离子吸附作用的研究进展,并对其在重金属污染废水处理方面的前景作了展望。
The structure of chitosan has abundent --NH2 and --OH, so it has good adsorption ability for heavy metal ions. As a kind of natural polymer, the adsorption properties of chitosan are affected by its physical form, the source of the raw materials, the degree of deacetylation and the pH value of the system. Therefore, to improve the adsorption properties and to expand its application range, it is an essential method to modify its physical and chemical properties of the natural chitosan. This paper reviews the progress on the modification methods of the ehitosan and the adsorption behavior of its derivatives to the heavy metal ions. The perspective of the chitosan derivatives used in the treatment of heavy metal contaminated water is also discussed.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2012年第11期2212-2223,共12页
Progress in Chemistry
基金
国家高技术发展计划(863)项目(No.2009AA063904)资助
