中文摘要：

采用十六烷基三甲基溴化铵（CTAB）改性杂色曲霉菌粉（AVB）作为吸附剂去除水中的Cr（VI），考察了CTAB浓度、废水pH、初始浓度、吸附剂投加量和反应时间对吸附效果的影响。结果表明最佳的CTAB浓度为1．5％，当pH等于2，吸附剂投加量为1．5g／L，初始浓度为25mg／L时，Cr（VI）的去除率达到79．40％。改性AVB吸附Cr（VI）的过程符合伪二级动力学方程，吸附等温线符合Langmuir模型，理论最大吸附容量qm为26．45mg／g。通过SEM、BET和FTIR技术对吸附剂进行表征，表明改性AVB具有较大的比表面积和丰富的功能基团如氨基、羧基和羟基。

英文摘要：

This study focused On using cetyl trimethyl ammonium bromide （CTAB） modified Aspergillus versicolor biomass （AVB） as biosorbent to remove Cr（VI） from aqueous solution. Effect parameters for adsorption performance including CTAB concentration, pH, initial Cr（VI） concentration, adsorbent dosage and contact time were investigated. Results showed that removal efficiency ofCr （VI） by 1.5% CTAB modified AVB attained 79.4% under adsorbent dose of 1.5 g/L, 25 mg/L as initial Cr（VI） concentration and for pH 2. The adsorption ofCr （VI） on the modified AVB was found to follow the pseudo-second-order kinetics, adsorption isotherm data followed Langrnuir isotherm model and the maximum adsorption capacity was 26.45 mg/g. Adsorbent were characterized by fourier transform infrared spectroscopy （FTIR）, scanning electron microscopy （SEM） and BET surface area analysis. Results showed that modified AVB with larger specific surface area and abundant functional groups such as amino, carboxyl and hydroxyl groups.