摘要
含有重金属离子的废水是最严重的环境问题之一,接触过量的重金属会对水资源产生不利影响,危及生态系统和人类健康。在各种处理技术中,利用生物聚合物吸附是一种很有前途的替代方法。壳聚糖是由甲壳素衍生的天然聚合物,具有良好的生物相容性、生物降解性和无毒性。此外,壳聚糖由于其分子中存在氨基和羟基,可作为金属离子的附着位点,被称为一种有效的吸附剂。近年来,壳聚糖衍生物作为金属离子吸附剂引起了人们的广泛关注。这些衍生物是通过物理或化学修饰或两者兼而有之,以改善壳聚糖在吸附中的性能。文章讨论了壳聚糖修饰的最新进展以及在水溶液中金属离子去除中的应用。
Wastewater containing heavy metal ions is one of the most serious environmental problems. Exposure to excessive heavy metals can adversely affect water resources and endanger ecosystems as well as human health. Among various treatment techniques, the use of biopolymer adsorption is a promising alternative. Chitosan is a natural polymer derived from chitin with good biocompatibility, biodegradability and nontoxicity. In addition, due to the presence of amino and hydroxyl groups in its molecules, chitosancan be used as an attachment site for metal ions, which is called an effective adsorbent. In recent years, chitosan derivatives have attracted much attention as metal ion adsorbents. These derivatives are modified by physical or chemical modifications or both to improve the performance of chitosan in adsorption. The recent advances in chitosan modification and its application in the removal of metal ions in aqueous solution are discussed.
出处
《科技创新与应用》
2020年第18期44-45,共2页
Technology Innovation and Application
基金
黑龙江省科学院青年创新基金(编号:CXJQ2019WL02)。
关键词
壳聚糖
改性
吸附
金属离子
Chitosan
modification
adsorption
metal ions
