黄孢展齿革菌对镉离子的吸附  

STUDY ON THE CADMIUM(Ⅱ) ADSORPTION PROPERTIES BY PRETREATED BIOMASS OF PHANEROCHATE CHRYSOSPRIUM

作　　者：李清彪[1] 刘刚[1] 胡月琳[1] 邓旭[1] 吴元菲[1] 

机构地区：[1]厦门大学化工系,厦门361005

出　　处：《离子交换与吸附》2001年第6期501-506,共6页Ion Exchange and Adsorption

基　　金：国家教委留学回国人员科研启动基金资

摘　　要：选用黄孢展齿革菌进行生物吸附镉离子的研究.比较多种预处理方法发现采用甲醛交联-碱处理能显著提高吸附效果.当溶液pH为4.5,吸附温度为25～35℃,菌丝球粒径在1.5～2.0mm范围内,吸附时间为12h,吸附效果最佳.此时,镉离子浓度从10mg/L下降至0.04mg/L,达到国家污水综合排放标准.此外,该生物吸附过程是由快速吸附和缓慢吸附两个阶段所组成的.The properties of cadmium (Ⅱ) adsorption by Phanerochaete chrysosporium were investigated. Pretreatment of the biomass by formaldehyde cross-linking and subsequent alkaline treatment could considerably improve the adsorption capacity compared to other sorts of treatments. The experimental results indicated that the optimum adsorption conditions were the solution pH 4.5, temperature 25~35℃, and the pellet diameter range of 1.5~2.0 mm. On these conditions mentioned above, cadmium ion concentration could be reduced from 10ppm down to 0.04ppm that was below the value suggested by the Chinese National Waste Water Integrated Discharge Standards. Furthermore, biosorption kinetic results showed that this process involves two phases, including a fast adsorption phase and a slow adsorption phase.

关 键 词：黄孢展齿革菌 生物吸附 镉离子 废水处理 含镉废水 

分 类 号：X703.1[环境科学与工程—环境工程] O647.3[理学—物理化学]