采用间歇法研究了沸石对溶液中铈离子的吸附性能,并对它的吸附机理进行了初步探讨,从而为高放废液的处理提供新的技术途径,也可为高放废物的地质处置效果提供一定的参考。研究表明,沸石对溶液中铈离子吸附能力较低,吸附平衡时间较长,约为168小时;固液比1∶50、溶液中铈离子浓度1400mg/l及pH=1.5时,室温下沸石对溶液中铈离子的平衡吸附量约为22.5mg/g,平衡吸附率约为32%,平衡吸附比约为23.50ml/g;初始浓度一定时,平衡吸附量随着沸石加入量的增大逐渐减少,平衡吸附率与平衡吸附比则逐渐增大,但增大的幅度逐渐减小。
Discontinuous process was applied to study the adsorption capacity and mechanism of zeolite to cerium ions,which provided some references to the assessment of disposal effect of high-level liquid wastes and a new technology avenue to the processing of the high-level liquid wastes.The experimental results show that the equilibrium adsorption time of zeolite to cerium ions was about 168 hr.The equilibrium adsorption capacity was about 22.5mg/g and equilibrium adsorption rate and ratio were about 32% and 23.5ml/g under experimental conditions（room temperature,cerium ions concentration：1400mg/l,pH=1.5,proportion of solid-liquid=1∶50）,respectively.The equilibrium adsorption capacity decreased while the equilibrium adsorption rate and ratio increased with increasing zeolite＇s quantity for a given initial concentration of cerium ions.
参考文献
| [1] | 王金明,易发成.沸石对Sr2+的吸附性能研究[J].金属矿山,2009(05):138-142. |
| [2] | 王金明,易发成.几种矿物材料对Cs+吸附性能的研究[J].核化学与放射化学,2006(02):117-121. |
| [3] | 叶明吕,陆誓俊,秦春扣,许丽红,何阿弟,唐志华,徐国庆,范选林,顾绮芳,杜志超.放射性锶在沸石中的吸附与迁移研究[J].核化学与放射化学,1994(04):199. |
| [4] | 李利华.Sr、Cs在回填材料中的吸附与迁移研究[J].原子能科学技术,1998(z1):76. |
| [5] | Akyil S.;Aytas S.;Aslani MAA. .Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(0):769-773. |
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