摘要
探讨以锯木屑、稻草为原料制备纤维素,通过有机合成方法,分别用乙二胺和氯乙酸与纤维素接枝共聚,制成含氮纤维素和羧甲基纤维素。并用其通过柱交换对水中的Cd^(2+)、Hg^(2+)、Pb^(2+)、As^(3+)、Mn^(2+)、Ni^(2+)、Cr^(6+)、Cu^(2+)等重金属离子分别进行了去除实验,取得了较为满意的去除效果。用饱和食盐水或稀氨水可洗脱再生、反复使用,成为一种高效化学净水剂。
This paper explores that the azotic cellulose and carbomethyl cellulose can be made on the basis of the material preparation cellulose——saw wood flour and rice straw, by means of organicsynthesis and by graft copolymerization of ethylene diamine, chloracetation and cellulose. The removal experiments of the heavy metal ions in the water: Cd2+ , Hg2+ , Pb +, As , Mn2+ , Ni2+ , Cr6+ and Cu2+ were carried out by post exchange with the azotic cellulose and carbomethyl cellulose, which obtained a better satisfactory removal effect. A kind of powerful chemical water purification can be generated after elutriation and regeneration with saturated saline and diluted liquid ammonia and being used repeatedly.
关键词
有机合成
净水剂
重金属离子
去除
organic synthesis
water purification
heavy mealion
removal
