首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >RADIOTRACER TECHNIQUE IN ADSORPTION STUDY .14. EFFICIENT REMOVAL OF MERCURY FROM AQUEOUS SOLUTIONS BY HYDROUS ZIRCONIUM OXIDE
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RADIOTRACER TECHNIQUE IN ADSORPTION STUDY .14. EFFICIENT REMOVAL OF MERCURY FROM AQUEOUS SOLUTIONS BY HYDROUS ZIRCONIUM OXIDE

机译:吸附研究中的放射性示踪剂技术.14。用含水氧化锆有效去除水溶液中的汞

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Adsorption of Hg(II) ions on synthetic hydrous zirconium oxide has been investigated as a function of contact time, Hg(II) concentration (10(-3)-10(-8) M) and temperature (303-333 K). x-Ray diffraction studies indicated the amorphous nature of the synthesized oxide. The relative change of uptake, i.e. percentage adsorption increases from 80.3 to 98.3% with the increase in dilution (from 1.0 x 10(-3) to 1.0 x 10(-8) M). The kinetics of the process follows first order rate law and obeys the Freundlich isotherm over the entire range for the bulk concentration of Hg(II). The uptake of Hg(II) increases with the increase in temperature from 303 to 333 K. Pre-irradiation of adsorbent with neutrons (3.85 x 10(6) n/cm(2)/s) and gamma-radiations (ca 1.72 Gy/h) has practically no effect on the extent of adsorption of Hg(II).
机译:已经研究了Hg(II)离子在合成水合氧化锆上的吸附与接触时间,Hg(II)浓度(10(-3)-10(-8)M)和温度(303-333 K)的关系。 X射线衍射研究表明合成氧化物的无定形性质。吸收的相对变化,即吸附百分比随稀释度的增加(从1.0 x 10(-3)增至1.0 x 10(-8)M)从80.3%增加到98.3%。该过程的动力学遵循一阶速率定律,并且在整个范围内对于Hg(II)的整体浓度都遵循Freundlich等温线。 Hg(II)的吸收量随着温度从303 K升高到333 K而增加。中子(3.85 x 10(6)n / cm(2)/ s)和伽马射线(ca 1.72 Gy)预先吸附吸附剂/ h)对Hg(II)的吸附程度几乎没有影响。

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