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A potential refinement of water endangered with Zn-65 onto modified zeolite
Journal of Radioanalytical and Nuclear Chemistry ( IF 1.5 ) Pub Date : 2021-01-04 , DOI: 10.1007/s10967-020-07504-y
Eva Chmielewská , Wlodzimierz Tylus

The recently synthesized mono- and bimetallic Fe and Mn oxides supported zeolite of clinoptilolite type, characterized with FT-IR, XRD, SEM–EDS and XPS spectroscopy, confirmed the occurrence of a new MnO 2 phase (pyrolusite, birnessite) including mostly amorphous iron oxi(hydr)oxide FeO(OH) species on the surface. The product validated a much higher adsorption capacity toward Zn-65 pollutant compared to the natural clinoptilolite. The following order, beginning with a decreasing maximum adsorption capacity a(max) toward Zn-65 was found: MnOx-zeolite (35.1 mg/g) > FeO(OH)-MnOx-zeolite (23.5 mg/g) > FeO(OH)-zeolite (12.9 mg/g) > natural zeolite (8 mg/g).

中文翻译:

改性沸石对受 Zn-65 危害的水的潜在精制

最近合成的单金属和双金属 Fe 和 Mn 氧化物负载的斜发沸石型沸石,用 FT-IR、XRD、SEM-EDS 和 XPS 光谱表征,证实了新的 MnO 2 相(软锰矿、水钠锰矿)的出现,其中主要包括无定形铁表面上的氧化(氢)氧化物 FeO(OH)物质。与天然斜发沸石相比,该产品证实了对 Zn-65 污染物具有更高的吸附能力。发现以下顺序,从对 Zn-65 的最大吸附容量 a(max) 递减开始:MnOx-沸石 (35.1 mg/g) > FeO(OH)-MnOx-沸石 (23.5 mg/g) > FeO(OH) )-沸石 (12.9 mg/g) > 天然沸石 (8 mg/g)。
更新日期:2021-01-04
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