pH值对U、Pu的吸附影响
以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和主要成分。结果表明,水相环境中土壤对U、Pu的吸附约在第13d达到吸附平衡。pH值对土壤吸附能力有较大影响,酸性溶液吸附能力较弱,碱性溶液吸附能力较强。U、Pu在水溶液中的化学种态和主要成分对土壤吸附有一定影响,带电荷的UO2（CO3）2-（2-）、UO2（CO3）3-（4-）和不带电的Pu（OH）4易与土壤表面的≡Si—OH、Al—OH等表面羟基官能团形成新的络合物,使得土壤的吸附能力增强。...
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| Published in | 核化学与放射化学 Vol. 39; no. 3; pp. 213 - 217 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010
2017
成都理工大学核技术与自动化工程学院,四川成都,610059%西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳,621010%成都理工大学核技术与自动化工程学院,四川成都610059 四川理工学院化学与环境工程学院,四川自贡 643000 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9950 |
| DOI | 10.7538/hhx.2017.39.03.0213 |
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| Abstract | 以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和主要成分。结果表明,水相环境中土壤对U、Pu的吸附约在第13d达到吸附平衡。pH值对土壤吸附能力有较大影响,酸性溶液吸附能力较弱,碱性溶液吸附能力较强。U、Pu在水溶液中的化学种态和主要成分对土壤吸附有一定影响,带电荷的UO2（CO3）2-（2-）、UO2（CO3）3-（4-）和不带电的Pu（OH）4易与土壤表面的≡Si—OH、Al—OH等表面羟基官能团形成新的络合物,使得土壤的吸附能力增强。 |
|---|---|
| AbstractList | TL942.1; 以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和主要成分.结果表明,水相环境中土壤对U、Pu的吸附约在第13d达到吸附平衡.pH值对土壤吸附能力有较大影响,酸性溶液吸附能力较弱,碱性溶液吸附能力较强.U、Pu在水溶液中的化学种态和主要成分对土壤吸附有一定影响,带电荷的UO2 (CO3)22-、UO2 (CO3)32-和不带电的Pu(OH)4易与土壤表面的≡Si-OH、=Al-OH等表面羟基官能团形成新的络合物,使得土壤的吸附能力增强. 以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和主要成分。结果表明,水相环境中土壤对U、Pu的吸附约在第13d达到吸附平衡。pH值对土壤吸附能力有较大影响,酸性溶液吸附能力较弱,碱性溶液吸附能力较强。U、Pu在水溶液中的化学种态和主要成分对土壤吸附有一定影响,带电荷的UO2（CO3）2-（2-）、UO2（CO3）3-（4-）和不带电的Pu（OH）4易与土壤表面的≡Si—OH、Al—OH等表面羟基官能团形成新的络合物,使得土壤的吸附能力增强。 |
| Abstract_FL | The pre-selected site,a repository of very low-level radioactive waste in Southwest China is taken as the study subject.With the static simulation test,effect of pH in aqueous phase on absorption of U and Pu in the soil is studied.With the software PHREEQC,different form and principal components of groundwater solutions are simulated under different pH.The study shows that,in the aqueous environment,the absorption of the soil for nuclides U and Pu reaches absorption equilibrium in 13 days.The pH value has great influence on the absorption of the soil.The acidic solution has a weak effect,while the alkaline solution has a large effect.U and Pu have certain effect of the chemical form and principal components in aqueous solutions on the absorption of the soil.Compounds of U and Pu with charge are easy to combine with the functional groups of the soil surface,which can strengthen the absorption of the soil and heighten the charge density,beneficial to the absorption. |
| Author | 成建峰 冷阳春 庹先国 赖捷 阳刚 邓超 |
| AuthorAffiliation | 成都理工大学核技术与自动化工程学院,四川成都610059 西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 四川理工学院化学与环境工程学院,四川自贡643000 |
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| Author_FL | LAI Jie CHENG Jian-feng YANG Gang TUO Xian-guo LENG Yang-chun DENG Chao |
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| DOI | 10.7538/hhx.2017.39.03.0213 |
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| DocumentTitleAlternate | Effect of pH on Adsorption Characteristics of Uranium and Plutonium |
| DocumentTitle_FL | Effect of pH on Adsorption Characteristics of Uranium and Plutonium |
| EndPage | 217 |
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| Keywords | U Pu 吸附分配系数 Kd soil 土壤 PHREEQC |
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| Notes | 11-2045/TL U; Pu; soil; Kd; PHREEQC CHENG Jian-feng1 , LENG Yang-chun2 , TUO Xian-guo1,2,3 , LAI Jie2 , YANG Gang2 , DENG Chao2 （ 1. College of Nuelear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China; 2. Laboratory of National Defense for Radioactive Waste and Environmental Security, Southwest University of Science and Technology, Mianyang 621010, China; 3. College of Chemistry and Environmental Engineering, Sichuan University of Science ＆ Engineering, Zigong 643000, China） The pre-selected site, a repository of very low-level radioactive waste in Southwest China is taken as the study subject. With the static simulation test, effect of pH in aqueous phase on absorption of U and Pu in the soil is studied. With the software PHREEQC, different form and principal components of groundwater solutions are simulated under different pH. The study shows that, in the aqueous environment, the absorption of the soil for nuclides U and Pu reaches absorption equilibrium in 13 days |
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| PublicationTitle | 核化学与放射化学 |
| PublicationTitleAlternate | Journal of Nuclear and Radiochemistry |
| PublicationTitle_FL | Journal of Nuclear and Radiochemistry |
| PublicationYear | 2017 |
| Publisher | 西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 成都理工大学核技术与自动化工程学院,四川成都,610059%西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳,621010%成都理工大学核技术与自动化工程学院,四川成都610059 四川理工学院化学与环境工程学院,四川自贡 643000 |
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| Snippet | 以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和主要成分。... TL942.1; 以西南某极低放废物处置库预选场址为研究对象,通过静态模拟实验研究水相pH值对U、Pu在土壤中的吸附影响,结合PHREEQC软件模拟了该地下水溶液中不同pH值下的种态和... |
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| SubjectTerms | PHREEQC Pu U 吸附分配系数 土壤 |
| Title | pH值对U、Pu的吸附影响 |
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