鱼腥藻对某些金属离子的吸附效应研究（Ⅱ）──鱼腥藻对金（Ⅲ）的吸附

A Study on the Biosorption of Several Metals at Alga(Ⅱ)---The Biosorption of Au (Ⅲ)by Alga(Anabaena)

在ｐＨ５～７的缓冲介质中，鱼腥藻吸附Ａｕ￣（３＋）然后用６ｍｏｌ／ＬＨＣｌ洗脱，回收率在９８％～１００％。在选定条件下，鱼腥藻对Ａｕ￣（３＋）的最大吸附量为１５．７～１８．８ｍｇ／ｇ。所拟方法可供低含量Ａｕ￣（３＋）溶液中Ａｕ￣（３＋）的富集。

nabaena No. 1058 was selected as the algae strain in the study.Au(Ⅲ)was subjected tobiosorption at pH 5～7 and eluted with 6 mol/L HCl, recoveries of 98%～100% were achieved.The biosorption capacities were 15.7～18.8 mg/g. The method would be useful for enrichmentof gold from solutions containing low levels of Au (Ⅲ).