摘要选取有序介孔材料MCM-41、大孔材料MOSF作为吸附剂,进行了模拟含铀废水的吸附实验研究,考察了吸附时间,温度,pH,MCM-41的投加量,初始浓度对铀酰溶液吸附率的影响,考察了初始浓度,反应时间对MOSF吸附铀酰溶液的影响;并在相同的pH,反应时间,温度,投加量,初始浓度下比较MCM-41,MOSF对铀酰溶液的吸附效果;绘制Langmuir吸附等温线和Freundlish吸附等温线,研究吸附等温规律,并用XRD谱图分析了MCM-41的组成,并用萃取的方法进行了MOSF预处理。实验结果表明:MCM-41对放射行废水的吸附平衡时间是50min,吸附过程符合Langmuir吸附等温规律;MOSF吸附放射性废水的平衡时间是50min,吸附过程符合Freundlish吸附等温规律;在相同条件下MOSF的吸附效率大于MCM-41的吸附效率。64764
毕业论文关键词 MCM-41、 MOSF 、吸附 、放射性废水
毕业设计说明书(论文)外文摘要
Title The study of radioactive waste water was adsorbed on porous materials
Abstract
Select a mesoporous material MCM-41, macroporous materials MOSF as an adsorbent, studied the adsorption experiment of simulated wastewater containing uranium. Investigated the effect of adsorption time, temperature, pH, MCM-41 dosage, initial concentration uranyl on adsorption rate. Investigated the initial concentration, the reaction time on the MOSF adsorption of uranyl solution; and at the same pH, reaction time, temperature, dosage, initial concentration. Compared MCM-41 with MOSF on the adsorption of uranyl solution; draw Langmuir adsorption isotherms and Freundlish adsorption isotherms of adsorption isotherm laws, and analyzed consisting of MCM-41 by XRD spectra, used extraction methods for MOSF pretreatment. Experimental results show that: adsorption equilibrium time is 50min for radiation wastewater on MCM-41 , the adsorption process the Langmuir adsorption isotherm law; equilibration time is 50min for MOSF adsorption of radioactive waste , the adsorption process meets Freundlish adsorption isotherm law; under the same conditions , the adsorption efficiency of MOSF is greater than the adsorption efficiency of MCM-41.
Keywords MCM-41 MOSF Adsorption Radioactive Wastewater
目 录
1 引言 1
1.1 放射性废水的来源及危害 1
1.1.1 放射性废水的来源 1
1.1.2 放射性废水的危害 1
1.2 放射性废水中铀的存在形态 2
1.3 吸附法处理含铀废水研究现状 3
2 实验部分 4
2.1 实验材料和试剂 4
2.2 实验仪器 4
2.3 多孔材料的制备及处理 5
2.3.1 MCM-41的制备 5
2.3.2 MOSF的预处理 5
2.4 溶液的配制 6
2.4.1 铀标准储备液的配制 6
2.4.2 偶氮胂Ⅲ显色剂的配制 6
2.5 放射性废水中铀的测量方法