Amorphous antimony oxide for adsorbing radioactive strontium-90 and cobalt-60 and preparation method of amorphous antimony oxide

Abstract

The invention relates to the field of radioactive element wastewater treatment, and provides an amorphous antimony oxide for adsorbing radioactive Sr-90 and Co-60 and a preparation method of the amorphous antimony oxide in order to solve the problems that an existing organic ion exchange agent has a poor effect and shorter service life when being used for treating low-concentration nuclear radioactive wastewater, and an antimony pentoxide adsorbent prepared in the prior art has the smaller adsorption capacity for Sr-90. The preparation method comprises the following steps that 1) antimony butter and hydrochloric acid are taken as raw materials, weighed and mixed to obtain a mixed solution; 2) the mixed solution is oxidized in a water bath condition and then is mixed and hydrolyzed with a large amount of water, filtering separation is carried out to obtain a hydrolysis product, and the amorphous antimony oxide for adsorbing the radioactive Sr-90 and Co-60 is obtained after drying. The amorphous antimony oxide for adsorbing the radioactive Sr-90 and Co-60 and the preparation method of the amorphous antimony oxide have the advantages that the preparation method is concise and efficient, and a part of raw materials can be recycled; the prepared amorphous antimony oxide has huge specific surface area and a disordered structure, and has a very strong adsorbing effect on Sr-90, Co-60and other radioactive isotopes.

Description

technical field

[0001] The invention relates to the field of radioactive element waste water treatment, in particular to an amorphous antimony oxide for adsorbing radioactive strontium-90 and cobalt-60 and a preparation method thereof. Background technique

[0002] The rapid development of nuclear energy in China, especially the construction of nuclear power plants in recent years, will inevitably lead to the generation of a large amount of low-radioactive wastewater. In order to prevent these radioactive elements from entering the water cycle of the ecological environment and causing irreversible poisoning to organisms, we must remove the radioactive elements in these low-level radioactive wastewaters before they are discharged. The main pollutants in low-level radioactive wastewater are radioactive isotopes strontium-90 and cobalt-60. And because the two radioactive isotopes, Sr-90 and Co-60, have a longer half-life and high solubility, they are more harmful. Currently, ...

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