霉菌菌丝球对Pb2+的吸附研究

从农药厂土壤、稻田土壤、活性污泥中分离得到霉菌20株．检测其对重金属离子pb^2 的吸附性能，其中从农药厂土壤中分离得到-株霉菌HM6对pb^2 离子吸附能力最强．以其作为吸附剂对水体中pb^2 离子进行去除实验，结果表明：该霉菌培养72h后，当pb^2 的初始质量浓度为100mg／L，菌体投加量为2g(干重)／L时，最佳吸附条件为pH-5，常温吸附15min，吸附量、去除率分别可达40mg／g和80％以上．其中水体的DH值是影响吸附作用的最主要因素．

Study on Biosorption of Pb2+ by Mould Hyphaball

20 stubs of mould were separated and got from the soil of insecticide factory, paddy field soil and activated sludge ,then their absorption performance for heavy metal ion Pb~(2+) was measured. The mould HM6 which separated from insecticide factory soil has the best activity of absorbing Pb~(2+). With it as adsorbent of Pb~(2+) ion in the water body, the results showed that the Pb~(2+) initial concentration is 100 mg/L, added amount of the mould is 2 g (dry weight)/L, after that mould has been developed for 72 hours, the best absorption condition is pH=5, absorption time is 15 min at room temperature, the adsorptive capacity and the rate of removing in the experiment are 4 mg/g and 86.8 %. pH is a critical factor ,which affects the adsorption of Pb~(2+) ion in the water body by mould hyphaball.