斜生栅藻和汉氏菱形藻对Ag(Ⅰ)离子吸附的比较研究  

Study on Adsorption of Ag^(+) on Scenedesmus Obliquus (Turp.) Küz. and Nitzschia Hantzschiana Rabh.

作　　者：李映苓[1] 王若南[1] 赵逸云[2] 袁冬梅[2] 曹玉[1] 

机构地区：[1]云南大学生物系 [2]云南大学应用化学系,云南昆明650091

出　　处：《贵金属》2004年第1期7-10,共4页Precious Metals

基　　金：云南省自然科学基金资助项目(2000B005M)

摘　　要：近来的报道表明,利用藻类生物吸附处理含重金属离子的污水,具有效率高、费用低、污染小等优点,作者进行了斜生栅藻(Scenedesmus obliquus(Turp.) K黷z.)及汉氏菱形藻(Nitzschia hantzschiana Rabh.)对Ag(I)离子吸附的比较研究,发现在2种藻上所吸附的Ag都主要以+1价的形式存在;在相同条件下,汉氏菱形藻对Ag(I)离子的吸附能力明显比斜生栅藻高,在Ag+离子初始质量浓度为0.33 mg/ml、温度25?℃下,当吸附达到平衡后,斜生栅藻对Ag(I)离子的平均吸附量为15mg/g,而汉氏菱形藻为27mg/g。The adsorption of Ag+ on Scenedesmus obliquus (Turp.)Ktz. and Nitzschia hantzschiana Rabh. was studied in the present paper. It was found that the adsorption ability of Nitzschia hantzschiana Rabh. for Ag+ is higher than that of Scenedesmus obliquus (Turp.)K黷z. under the same conditions. The average adsorption amount of Ag+ was 15mg/g on Scenedesmus obliquus (Turp.) Ktz. and 27mg/g on Nitzschia hantzschiana Rabh.,respectively when the adsorption balance was reached.

关 键 词：纤维冶金 银 斜生栅藻 汉氏菱形藻 吸附 污水处理 

分 类 号：X703[环境科学与工程—环境工程] O614.122[理学—无机化学]