大颗粒吸附碘酸盐的研究

发布时间：2020-12-29 18:42

　　放射性碘在环境中的高毒性和高迁移性会对人体健康造成严重危害。碘酸盐是环境中碘的主要种类之一,是工业消毒的重要副产品。还建议作为盐的添加剂来纠正碘缺乏。从公共卫生和环境保护的角度来看,从水溶液中去除IO₃^-具有重要意义。铝是一种流行的吸附材料。金属涂层对某些特定污染物的吸附能力有所提高。在大颗粒上镀铜。Cu-Al₂O₃、Fe-Al₂O₃和Cu-Al₂O₃对I0₃^-的吸附需要70小时才能达到吸附平衡,K_d分别为102、92和38 ml/g。吸附动力学遵循伪二阶模型。K_d降低,而IO₃^-的初始浓度从5增加到120 ppm。等温线用弗伦德利希模型很好地描述了。当温度升高时,K_d降低,吸附过程为非自发吸热反应。在酸性条件下,IO3的吸附性能得到改善。本研究中的最大K

【文章来源】：华北电力大学(北京)北京市 211工程院校 教育部直属院校

【文章页数】：61 页

【学位级别】：硕士

【文章目录】：
摘要
Abstract
Chapter 1 Introduction
Chapter 2 literature review
    2.1 HISTORICAL BACKGROUND
    2.2 IODINE RELEASE TO THE ENVIRONMENT FROM THE NUCLEAR POWER PLANT
    2.3 EXPOSURE TO RADIOACTIVE IODINE
    2.4 RADIOACTIVE IODINE RELEASE FROM FUKUSHIMA DAI-ICHI NUCLEAR POWERPLANT
    2.5 SORPTION IODINE FROM AQUEOUS ENVIRONMENTS
    2.6 REMOVAL OF RADIOACTIVE IODINE FROM WATER
    2.7 SORPTION IODINE BY USING ACTIVATED CARBON
    2.8 SORPTION IODINE FROM THE SOIL
2O₃">    2.9 SORBET MATERIAL AL₂O3

Chapter 3 Methdology
    3.1 INSTRUMENTS AND EQUIPMENT USED ON LABORATORY
    3.2 THE MAIN MATERIAL AND REAGENTS USED ON LABORATORY
    3.3 PREPARATION OF MATERIAL
    3.4 BATCH SORPTION EXPERIMENTS
    3.5 THE CHARACTERISTICS OF MATERIAL INVESTIGATION
    3.6 SORPTION MODELS
    3.7 SORPTION MECHANISM INVESTIGATION
Chapter 4 Results and discussion
    4.1 （BRUNAUER,EMMETT AND TELLER） BET AND SCANNING ELECTRONMICROSCOPY（SEM）
    4.2 X-RAY POWDER DIFFRACTION （XRD） INVESTIGATION
    4.3 THE EFFECT OF CONTACT TIME
    4.4 EFFECT OF THE TEMPERATURE
    4.5 EFFECT OF THE EQUILIBRIUM PH
    4.6 EFFECT OF THE INITIAL CONCENTRATION
    4.7 FOURIER TRANSFORM INFRARED SPECTROSCOPY （FTIR） ANALYSIS
    4.8 X-RAY PHOTOELECTRON SPECTROSCOPY （XPS） ANALYSIS
Chapter 5 Conclusions and future work
Refernce
Acknowledgements



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