【作者】 曾继述； 夏德迎；

【Author】 ZENG Ji-shu XIA De-ying (China Institute of Atomic Energy,Beijing,102413)

【机构】 中国原子能科学研究院；

【摘要】 用批式实验法,在25℃恒温条件下测定了15种国产矿物、工业产品在示踪的预平衡水或蒸馏水中对I^-和TcO₄^-离子的吸附比。结果表明,灰硒汞矿和杏壳活性炭对碘的吸附比为10³mL·g^-1量级;锑赭石、杏壳活性炭和脆硫锑铅矿对锝的吸附比为10⁴mL·g^-1量级。这些材料可被考虑用作回填材料的候选组分,以提高处置库阻滞碘、锝阴子迁移的能力。试验材料在预平衡水中和去离子水中对碘、锝的吸附比的比较表明,尽管个别材料的两个吸附比相差5倍,但在多数情况下,相差仅在2倍左右。我们认为,使用示踪去离子水进行吸附材料的筛选是可行的。更多还原

【Abstract】 By using batch sorption experiments to determine sorption ratios for I^-and TcO₄^-ions has been completed.Fifteen kinds of industrial products and minerals from China were tested.Tests were performed at 25℃constant temperature in traced pre-equilibrated water or deionized water.The test results show that the sorption ratios of I for tiemannite and active carbon of apricot-shell are of the order 10³ mL/g,while the sorption ratio of TcO₄^- for jamesonite is of the order 10⁴ mL/g.These materials can be considered as selected backfill materials to improve capability of depository for preventing iodine and technetium ions from migrating.Comparing results of sorption ratios for I^-and TcO₄^-from both in pre-equilibrated water and deionized water,in most cases values are nearly the same.Although the difference of sorption ratio between two solutions for a few materials is as high as 5 times,it is still feasible for screening sorption materials by using traced deionized water system.更多还原