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CTAB改性膨润土制备及其对海洋溢油的吸附性能

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刘香玉, 孙娟, 赵朝成, 张彤, 蔡留苹, 侯亚璐, 李慧芬, 刘芳. CTAB改性膨润土制备及其对海洋溢油的吸附性能[J]. 环境工程学报, 2019, 13(1): 68-78. doi: 10.12030/j.cjee.201808021
引用本文: 刘香玉, 孙娟, 赵朝成, 张彤, 蔡留苹, 侯亚璐, 李慧芬, 刘芳. CTAB改性膨润土制备及其对海洋溢油的吸附性能[J]. 环境工程学报, 2019, 13(1): 68-78. doi: 10.12030/j.cjee.201808021
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LIU Xiangyu, SUN Juan, ZHAO Chaocheng, ZHANG Tong, CAI Liuping, HOU Yalu, LI Huifen, LIU Fang. Preparation of CTAB modified bentonites and its adsorption properties of marine oil spill[J]. Chinese Journal of Environmental Engineering, 2019, 13(1): 68-78. doi: 10.12030/j.cjee.201808021
Citation: LIU Xiangyu, SUN Juan, ZHAO Chaocheng, ZHANG Tong, CAI Liuping, HOU Yalu, LI Huifen, LIU Fang. Preparation of CTAB modified bentonites and its adsorption properties of marine oil spill[J]. Chinese Journal of Environmental Engineering, 2019, 13(1): 68-78. doi: 10.12030/j.cjee.201808021
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CTAB改性膨润土制备及其对海洋溢油的吸附性能

  • 1.

    中国石油大学华东化学工程学院，青岛 266580

  • 2.

    石油石化污染物控制与处理国家重点实验室，北京 102206

  • 3.

    浙江大学山东工业技术研究院，枣庄 277000

  • 基金项目:

    国家自然科学基金资助项目(41506117)

    中央高校基本科研业务费专项资助(18CX02132A)

    中国石油大学(华东)教学改革项目(QN201606)

    国家科技重大专项(2016ZX05040-003)

Preparation of CTAB modified bentonites and its adsorption properties of marine oil spill

  • 1.

    College of Chemical Engineering, China University of Petroleum East China, Qingdao 266580, China

  • 2.

    State Key Laboratory of Petroleum Pollution Control and Treatment, Beijing 102206, China

  • 3.

    Shandong Industrial Technology Research Institute of Zhejiang University, Zaozhuang 277000, China

  • Fund Project:

  • 摘要: 利用室内吸附实验，以钙基膨润土和改性后的CTAB-膨润土为研究对象，研究了改性前后的膨润土在海洋环境条件下对石油的吸附性能。结果表明，CTAB已经成功地插层到钙基膨润土层间，使其表面形貌更加蓬松，层间距增大为2.04 nm，改性后膨润土由亲水性变为疏水性。改性前后的膨润土对海洋溢油的吸附率均随着膨润土浓度的增加及粒径的减小而增加，改性后膨润土的吸油率比改性前提高了13.1%，最高达到59.5%。临界颗粒物浓度为1 000 mg·L-1，最佳颗粒物粒径范围为-1。改性前后的膨润土在海洋环境条件下对石油的吸附性能有明显变化，CTAB-膨润土对海洋溢油的吸附优势较为显著。
    Abstract: In this study, the laboratory adsorption experiments were conducted to compare the adsorption properties of marine petroleum on the calcium-based bentonite and modified CTAB-bentonite. The results show that CTAB successfully entered the calcium-based bentonite layers, causing a more fluffy surface morphology and increased interlayer distance (up to 2.04 nm) than before. And the hydrophilic calcium-based bentonite was modified to a hydrophobic of CTAB-bentonite. For calcium-based bentonite and CTAB-bentonite, their adsorption efficiencies of marine petroleum increased with the increase of bentonite concentration or the decrease of particle size. The absorption efficiency on CTAB-bentonite increased by 13.1%, and up to 59.5%. The critical particle concentration was 1 000 mg·L-1, the optimum range for particle size was lower than 100 μm. Finally, the Venezuelan crude oil was used to test its adsorption on CTAB-bentonite, the corresponding adsorption process could be well described by the quasi-secondary kinetic model and the Freundlich adsorption isotherm model. The optimum adsorption time and temperature were 240 min and 30 °C, respectively, and the adsorption capacity was about 526 mg·g-1. CTAB modified bentonite will be widely used in the marine oil spill in the future because its adsorption properties have significantly improved.
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  • 刊出日期:  2019-01-08

CTAB改性膨润土制备及其对海洋溢油的吸附性能

  • 1. 中国石油大学华东化学工程学院，青岛 266580
  • 2. 石油石化污染物控制与处理国家重点实验室，北京 102206
  • 3. 浙江大学山东工业技术研究院，枣庄 277000
基金项目:

国家自然科学基金资助项目(41506117)

中央高校基本科研业务费专项资助(18CX02132A)

中国石油大学(华东)教学改革项目(QN201606)

国家科技重大专项(2016ZX05040-003)

摘要: 利用室内吸附实验，以钙基膨润土和改性后的CTAB-膨润土为研究对象，研究了改性前后的膨润土在海洋环境条件下对石油的吸附性能。结果表明，CTAB已经成功地插层到钙基膨润土层间，使其表面形貌更加蓬松，层间距增大为2.04 nm，改性后膨润土由亲水性变为疏水性。改性前后的膨润土对海洋溢油的吸附率均随着膨润土浓度的增加及粒径的减小而增加，改性后膨润土的吸油率比改性前提高了13.1%，最高达到59.5%。临界颗粒物浓度为1 000 mg·L-1，最佳颗粒物粒径范围为-1。改性前后的膨润土在海洋环境条件下对石油的吸附性能有明显变化，CTAB-膨润土对海洋溢油的吸附优势较为显著。

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