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  • 标题:Synthesis of a Novel Composite Hydrous Titanium Oxide- Hydroxyapatite for Adsorbing Uranium from Waste Effluents
  • 本地全文:下载
  • 作者:Amr H Ali ; Shaimaa MA Esmaeel ; Salah A Zaki
  • 期刊名称:International Journal of Waste Resources
  • 电子版ISSN:2252-5211
  • 出版年度:2020
  • 卷号:10
  • 期号:5
  • 页码:1-10
  • DOI:10.35248/2252-5211.20.10.390
  • 语种:English
  • 出版社:OMICS International
  • 摘要:In this paper; a novel composite (HAP@HTO)derived from hydrous titanium oxide (HTO) extracted from Rosettailmenite mineral and hydroxyapatite (HAP) was formed by co-precipitation method,specified and used for uraniumpreconcentration from its solutions. Batch tests were performed to investigate its selectivity towards uranium;maximum adsorption efficiency reached at pH 2.5, 120 minutes contact time, 900 mg L–1 uranium concentrationand adsorbent ratio (0.1g/75 mL). The equilibrium data fitted well with Langmuir adsorption isotherm. FromKinetics and thermodynamics data; process was fast, fitted well with pseudo-second order, spontaneous andexothermic. The percentage desorption of uranium reached its maximal at 15 minutes equilibrium time using 1 molL-1 H2SO4. Thereby, (HAP@HTO)composite has promising potential applications in extracting U (VI) from itsaqueous solutions in nuclear fuel field and environmental pollution cleanup.
  • 关键词:Ilmenite; Titanium hydroxide; Uranium; Langmuir; Elution
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