酵母菌对藏红T的吸附特性研究  

Study of the adsorption properties of Safranine T dye wastewater by yeasts

作　　者：秦昉[1] 郑佩[1] 白波 

机构地区：[1]长安大学环境科学与工程学院,陕西西安710054 [2]陕西省矿产资源勘查与综合利用重点实验室,陕西西安710054

出　　处：《应用化工》2015年第11期2022-2025,共4页Applied Chemical Industry

基　　金：陕西省自然科学基金项目(2015JM2071);陕西省矿产资源勘查与综合利用重点实验室开放课题基金资助(2014HB001)

摘　　要：研究了酵母菌对阳离子染料藏红T的吸附性能,考察了溶液p H和染料初始浓度对吸附过程的影响,研究了等温模型和吸附动力学。结果表明,p H对吸附效率的影响较大,最佳p H值为6;染料浓度在15-55 mg/L范围内,吸附量随着浓度的增加而增加。吸附过程符合准一级动力学模型和Langmuir等温模型,为单分子层物理吸附。Yeasts adsorbents were used to absorb the cationic Safranine T from aqueous solutions. Factors affecting the adsorption process including p H and dye concentration were investigated,respectively. The results show that p H has a significant impact on the adsorption efficiency and the optimal p H value is 6. The dye concentration is 15 - 55 mg / L,the adsorption capacity is enhanced with the increasing of initial concentration. The pseudo-first-order kinetic equation is suitable for fitting the adsorption process,indicating the process is dominated by physical absorption. The Langmuir model was found to be in better correlation with the experimental data,which shows that the absorption belongs to monolayer molecular adsorption.

关 键 词：酵母 藏红T 动力学 吸附等温方程 

分 类 号：TQ610.9[化学工程—精细化工] TQ028.7