生物吸附剂的制备及其对铬的吸附性能  

STUDY ON THE PREPARATION OF THE BIOSORBENT AND THE ADSORPTION EFFICIENCY TO THE HEAVY METAL CHROMIUM

作　　者：叶锦韶[1] 尹华[1] 彭辉[1] 刘慧璇[1] 梁郁强[1] 李桂娇[1] 

机构地区：[1]暨南大学环境工程系,广州510632

出　　处：《环境化学》2002年第2期144-148,共5页Environmental Chemistry

基　　金：广东省自然科学基金 ( 980 897);广东省环保局科技开发基金;国务院侨办重点学科基金 ( 93971 1 )资助项目

摘　　要：通过对吸附时间、吸附液pH值、溶液含铬浓度与菌丝球投加量的效应值与极值进行正交分析 ,确定出影响生物吸附效果的各因素依次是 :吸附时间→吸附液pH值→菌丝球投加量→铬浓度 .实验筛选出了两个对铬具有良好吸附性能的菌种 :黄曲霉 (Aspergillusflavus)、曲霉属 (Aspergillussp .) .在吸附 8h的条件下 ,它们对含铬 1 5mg·l- 1的吸附液除铬率分别达 6 7 1 %和 71 2 % ,两者的最佳吸附条件是 :pH =5 ,铬菌投加比为 5mg·g- 1.以这两种霉菌为主 ,通过吸附性能实验 ,探讨了多种因素对生物吸附剂除铬性能的影响 .The preparations of biosorbents and their adsorption efficiency to the heavy metal chromium were studied in this paper.The orthogonal experiment showed that the factors to affect the adsorption capacity were the time of adsorption→pH of water→the capacity of mycelial pellet→the concentration of chromium.Two species of molds,Aspergillus flavus and Aspergillus sp.were screened out which had good adsorption capacity when used to treat chrominum-containing water of 15mg·l -1.After 8 hours,the removal rate could reach 67.1%,71.2% respectively.The best adsorption conditions were pH=5,chromium:mycelial pellet=5mg·g -1.The mechanisms of the above two biosorbent-producing strains were also discussed.

关 键 词：制备 性能 生物吸附剂 霉菌 铬 吸附 重金属 废水处理 

分 类 号：O647.3[理学—物理化学]