【摘要】 <正> 甲壳素经化学改性制得的壳聚糖吸附Cu²⁺、Ni²⁺、Zn²⁺、Ca²⁺、Rb⁺、Cs⁺、Cd²⁺、Pb²⁺等离子的研究已有报道,但吸附Pd²⁺等贵金属离子的研究尚不多见.本文报道了壳聚糖及其交联产物的造粒方法,并测定了该糖吸附Hg²⁺、Cu²⁺、Ag⁺、Pd²⁺等离子的特性.结果表明,化学交联后的颗粒（作吸附剂）在酸性条件下仍保持相当好的刚性,对Pd²⁺离子的吸附容量较大,在Pd²⁺、Cu²⁺共存时可选择性吸附Pd²⁺.更多还原

【Abstract】 Chitosan and the particles of its crosslinked derivatives were manufactured,and the adsorption properties for Hg2+ ,Cu2+ , Ag+ and Pd2+ were studied in this paper. The result indicates that the particles keep its rigidity in the acidic solution,the capacity for Pd2+ is 480 mg/g, and it has an adsorption selectivity to Pd2+ when Cu2+ and Pd2+ are present simultaneously in the solution. These particles could be used in collecting precious metals from waste water.更多还原