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王莉霄, 钱天伟, 丁庆伟. 黄铁矿还原固定水中的高铼酸根[J]. 环境工程学报, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
引用本文: 王莉霄, 钱天伟, 丁庆伟. 黄铁矿还原固定水中的高铼酸根[J]. 环境工程学报, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
shu
Wang Lixiao, Qian Tianwei, Ding Qingwei. Reduction-immobilization of perrhenate in water by pyrite[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
Citation: Wang Lixiao, Qian Tianwei, Ding Qingwei. Reduction-immobilization of perrhenate in water by pyrite[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
shu

黄铁矿还原固定水中的高铼酸根

  • 1.

    太原科技大学材料科学与工程学院, 太原 030024

  • 2.

    太原科技大学环境与安全学院, 太原 030024

  • 基金项目:

    国家自然科学基金资助项目(41072265

    41272375)

    太原市科技局大学生创新创业专款(120164075)

    山西省回国留学人员科技项目重点资助项目(2013-重点2)

    山西省科技重大专项(201311D1028)

  • 中图分类号: X771

Reduction-immobilization of perrhenate in water by pyrite

  • 1.

    School of Material Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

  • 2.

    School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China

  • Fund Project:

  • 摘要: 以铼作为放射性锝的替代元素,用黄铁矿粉末对高铼酸根的还原固定进行了研究。采用球磨法制备出黄铁矿粉末。分别研究了不同固液比、不同的初始pH值和不同粒径条件下,黄铁矿粉末对高铼酸根的还原固定效果。结果显示,固液比为1:10(g/mL)为宜,在体系初始pH为12时,形成铁氧体,吸附高铼酸根,提升还原固定效果。对产物进行XPS表征,证明还原产物为ReO2。在乙醇介质中机械活化后利用超声分散可得到具有大的比表面积和晶格畸变的粒径较小的黄铁矿粉末,使其反应的活性位点增多,处理效果明显好于大粒径的黄铁矿粉末,在相对较短的时间内,铼的去除率可以达42%。在缺氧环境下黄铁矿能够长期保持有效性,在地质处置库应用中有实际意义。
    Abstract: Technetium was replaced by rhenium in order to study the technetium easily. The pyrite particles were prepared by ball milling method. The major subject of the research was to study the mechanism of reduction and immobilization of perrhenate by pyrite particle. We mainly studied the effect of three factors, different solid-liquid ratio, different initial pH conditions and different particle sizes, on the immobilization of perrhenate. The tests indicate that the solid-liquid ratio of 1:10(g/mL) is suitable. When the initial pH of the system was 12, the iron (hydr)oxides formed, which could adsorb the perrhenate, improve the effect of reduction and immobilization. The reductive production analyzed by XPS was ReO2. Mechanically activated in the ethanol, then ultrasonic dispersed, small pyrite particles with large specific surface area and lattice distortion rate could be obtained, its effect was significantly better than that of large pyrite particles. Using the small pyrite particles could obtain the best result, in the relatively short time, the removal rate was 42%. As natural mineral, pyrite could keep effective for a long time under anaerobic condition, especially used in deep geological disposal repository applications.
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  • [1] Wildung R. E., McFadden K. M., Garland T. R. Technetium sources and behavior in the environment. Journal of Environmental Quality, 1979, 8(2): 156-161
    [2] Lieser K. H., Bauscher C. Technetium in the hydrosphere and in the geosphere I: Chemistry of technetium and iron in natural waters and influence of the redox potential on the sorption of technetium. Radiochima Acta, 1987, 42(4): 205-213
    [3] Kaplan D. I. Influence of surface charge of an Fe-oxide and an organic matter dominated soil on iodide and pertechnetate sorption. Radiochima Acta, 2003, 91 (3): 173-178
    [4] James G. Speight, PhD. Lange's Handbook of Chemistry(Sixteenth Edition).USA: McGraw-Hill Education, 2005:395-399
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    [12] 李宽良,李书绅,赵英杰,等.核废物处置地球化学工程屏障研究.成都理工大学学报(自然科学版),2004,31(2):83-89 Li Kuanliang,Li Shushen,Zhao Yingjie, et al. Experimental research on geochemical engineering barrier used in radioactive waste disposal. Journal of Chengdu University of Technology(Science & Technology),2004,31(2):83-89(in Chinese)
    [13] 石俊仙,鲁安怀.黄铁矿处理含Cr(Ⅵ)废水体系的研究.内蒙古工业大学学报,2001,20(1):6-9 Shi Junxian,Lu Anhuai. Experimental research on treatment of Cr(Ⅵ)-bearing wastewater by pyrite. Journal of inner Mongolia Polytechnic University. 2001,20(1):6-9 ( in Chinese)
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出版历程
  • 收稿日期:  2014-01-21
  • 刊出日期:  2015-02-07
王莉霄, 钱天伟, 丁庆伟. 黄铁矿还原固定水中的高铼酸根[J]. 环境工程学报, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
引用本文: 王莉霄, 钱天伟, 丁庆伟. 黄铁矿还原固定水中的高铼酸根[J]. 环境工程学报, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
shu
Wang Lixiao, Qian Tianwei, Ding Qingwei. Reduction-immobilization of perrhenate in water by pyrite[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
Citation: Wang Lixiao, Qian Tianwei, Ding Qingwei. Reduction-immobilization of perrhenate in water by pyrite[J]. Chinese Journal of Environmental Engineering, 2015, 9(2): 627-632. doi: 10.12030/j.cjee.20150220
shu

黄铁矿还原固定水中的高铼酸根

  • 1.  太原科技大学材料科学与工程学院, 太原 030024
  • 2.  太原科技大学环境与安全学院, 太原 030024
  • 收稿日期:  2014-01-21
基金项目:

国家自然科学基金资助项目(41072265

41272375)

太原市科技局大学生创新创业专款(120164075)

山西省回国留学人员科技项目重点资助项目(2013-重点2)

山西省科技重大专项(201311D1028)

摘要: 以铼作为放射性锝的替代元素,用黄铁矿粉末对高铼酸根的还原固定进行了研究。采用球磨法制备出黄铁矿粉末。分别研究了不同固液比、不同的初始pH值和不同粒径条件下,黄铁矿粉末对高铼酸根的还原固定效果。结果显示,固液比为1:10(g/mL)为宜,在体系初始pH为12时,形成铁氧体,吸附高铼酸根,提升还原固定效果。对产物进行XPS表征,证明还原产物为ReO2。在乙醇介质中机械活化后利用超声分散可得到具有大的比表面积和晶格畸变的粒径较小的黄铁矿粉末,使其反应的活性位点增多,处理效果明显好于大粒径的黄铁矿粉末,在相对较短的时间内,铼的去除率可以达42%。在缺氧环境下黄铁矿能够长期保持有效性,在地质处置库应用中有实际意义。

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