碘(I~-)在水泥、氢氧化铁和岩盐中吸附行为的研究
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摘要: 采用放射化学法测定了AgI在浓盐溶液中的溶解度。用间歇平衡实验研究了浓盐溶液中碘(I ̄-)在水泥、氢氧化铁和天然岩盐中的吸附行为。研究结果表明,在以上三种吸附体系中,I ̄-浓度为10 ̄(-7)-10 ̄(-4)mol/l时,I ̄-的吸附比(R_d)与吸附剂种类有关,与溶液中I ̄-的平衡浓度(c_(eq))无关。I ̄-在吸附剂上的浓度(c_s)与其在溶液中的平衡浓度(c_(eq))的关系符合Freundlich方程。Abstract: STUDIES ON THE SORPTION OF I~- ON CEMENT,Fe(OH)_3 AND ROCK SALTYE YUXING(China Institute of Atomic Energy,P.O. Box 275(26) ,Beijing 102413)G.MARX;CH.KEILING(Free University,Berlin,Germany)ABSTRACT The solubilities of AgI concentrated salt solutions are determined with radiochemicalmethod.The sorption behaviors of I~- on cement,Fe(OH)_3 and rock salt in concentrated salt solu-tions are investigated with batch test.The experimental results show that in the above three sys-tems,when the concentration of I~- is 10~(-7)-10~(-4)mol/l, the sorption ratios of I~-(R_d)changewith the absorbent,but do not change with the equilibrium concentration of I~-. For low I~- con-centration sorption isotherms are linear and are in agreement with the empirical Freundlich equa-tion. Kev words Iodide Sorption Cement Fe(OH)_3 Rock salt.
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