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本文报导了对铀、锌、铜和锂四种元素具有一定吸附性能的几种钦复合吸附剂研制,其中筛选出钛(Ⅳ)铁(Ⅲ)复合吸附剂较佳,它的制备条件是Ti/Fe(摩尔比)=1/0.5,沉淀pH值为6.0,在加浓铀的人工海水中它的吸铀量为15717微克/克干剂,在天然海水中,逆流通海水十天,它的吸铀量亦是同类吸附剂中较高的,述到114.6微克/克吸附剂.另外,这种复合吸附剂在天然海水中吸铜量是16.55微克/克吸附剂,亦是较高的,它在天然海水中吸锌量是256.1微克/克吸附剂,吸锌量也是较高的.这些结果,对海水综合利用、废水利用环境保护方面等,都有重要的参考价值. 另外,在钛复合附剂电性和结构方面的研究,都取得较有价值的信息.吸铀量大的吸附剂,ξ电位绝对值有小的趋势.产生异质同晶的吸附剂吸铀量与吸锌量都较大.
In this paper, several kinds of complex adsorbents with certain adsorption capacity for four elements of uranium, zinc, copper and lithium were reported. Among them, titanium (Ⅳ) iron (Ⅲ) composite adsorbents were screened out. The preparation conditions are Ti / Fe (molar ratio) = 1 / 0.5, precipitation pH 6.0, uranium uptake of 15,717 μg / g dry enriched uranium in artificial seawater and in natural seawater countercurrent seawater for 10 days The amount of uranium absorbed was also higher for the same type of adsorbent, which was 114.6 μg / g adsorbent.In addition, the composite adsorbent absorbed 16.55 μg / g of adsorbent in natural seawater and was also high , Which absorb zinc in natural seawater is 256.1 μg / g adsorbent, zinc absorption is also higher These results have important reference value for comprehensive utilization of sea water, environmental protection of waste water utilization, etc. In addition, in the Titanium composite additives electrical and structural aspects of the study, have obtained more valuable information.Under the large amount of adsorbed uranium adsorbent, the absolute value of the zeta potential has a small tendency to produce heterogeneous isomerization of adsorbent uranium absorption and absorption Zinc are larger.