蕈菌菌丝体死细胞对水溶液中微量铅离子的吸附  

Biosorption of trace lead in aqueous solutions by dead biomass of macrofungi

作　　者：高健伟[1] 张丹[2] 陈红[1] 殷义高[2] 

机构地区：[1]中国科学院成都山地灾害与环境研究所,成都610041 [2]中国科学院研究生院,北京100083

出　　处：《工业用水与废水》2006年第4期23-26,共4页Industrial Water & Wastewater

基　　金：四川省2004年科技攻关项目(04SG023-006-05)

摘　　要：采用毛木耳(Auriculariapolytricha)菌丝体的死细胞作为生物吸附剂做吸附Pb2+的试验,以研究毛木耳吸附Pb2+的理想条件。试验评价了影响吸附的4个因子:溶液pH值,振荡吸附时间,金属初始浓度和菌丝体投加量。结果表明pH值是影响毛木耳的吸附能力的关键因子,pH值为6时达到最大吸附率(86.8%);吸收30min时,毛木耳对Pb2+的吸附值最高;随着溶液初始Pb2+浓度的增加,吸附率增加,但随菌丝体生物量的增加吸附能力下降。当溶液Pb2+的质量浓度为60mg/L时,最大吸附量达到11.698mg/g。毛木耳菌丝体死细胞作为未受过任何物理化学处理的自然生物体,具有提高吸附能力的潜力和空间,通过今后进一步深入地研究应用在污染废水的重金属处理领域是可能的。In order to determine the optimum conditions for Pb^2＋ biosorption, a test that using dead biomass of mycelium of auricularia polytricha as biosorbent to adsorb Pb^2＋ was carried out. The 4 factors influencing the adsorption capacity of auricularia polytricha： pH value of solution, shaking time, initial concentration of metal ion and dosage of mycelium were appraised. The result indicated that, initial pH was the key factor influencing the adsorption capacity of auricularia polytricha, when it was 6, the adsorption rate reached the maximun（86.8%）; After 30 min, the adsorption capacity of auricularia polytricha on Pb^2＋ reached the highest level; the adsorption rate increased with the increasing of the initial Pb^2＋concentration of the solution, while decreased with the increasing of the biomass of the mycelium. When the mass concentration of Pb^2＋ of the solution was 60 mg/L, the adsorption amount came to the max 11.698 mg/g. Therefore, it can draw a conclusion that, dead biomass of mycelium of auricularia polytricha as a natural organism without any physical and chemical treatment, its adsorption capacity has the potential and the probability to be improved. So, through the intensive study, using it in treatment of heavy metal in wastewater must be feasible in the future.

关 键 词：毛木耳 生物吸附 铅离子 菌丝体 

分 类 号：X703.1[环境科学与工程—环境工程]