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舒艳, 李科林, 李芸, 汤春芳. 狭叶香蒲绒纤维对油的吸附与机理[J]. 环境工程学报, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
引用本文: 舒艳, 李科林, 李芸, 汤春芳. 狭叶香蒲绒纤维对油的吸附与机理[J]. 环境工程学报, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
shu
Shu Yan, Li Kelin, Li Yun, Tang Chunfang. Adsorption characteristics and mechanism of zero diesel and colza oil by narrow-leaf cattail fiber[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
Citation: Shu Yan, Li Kelin, Li Yun, Tang Chunfang. Adsorption characteristics and mechanism of zero diesel and colza oil by narrow-leaf cattail fiber[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
shu

狭叶香蒲绒纤维对油的吸附与机理

  • 1.

    中南林业科技大学环境科学与工程学院, 长沙 410004

  • 基金项目:

    湖南省教育厅项目(13C1141)

    湖南省科技厅计划项目(2012FJ3144)

  • 中图分类号: X703

Adsorption characteristics and mechanism of zero diesel and colza oil by narrow-leaf cattail fiber

  • 1.

    College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China

  • Fund Project:

  • 摘要: 为了解香蒲绒纤维对油的吸附性能与机理,通过静态实验,研究了吸附时间、温度、香蒲绒投加量、油浓度对狭叶香蒲绒吸附水溶液中0#柴油、菜籽油的影响。香蒲绒纤维对油的吸附大约15 min达到平衡;2种油类物质的吸附量随温度、香蒲绒投加量增加而降低,随0#柴油和菜籽油含量增加而增加。热力学分析表明,香蒲绒对油类物质的吸附过程自发而且放热;拟二级动力学模型比拟一级动力学模型对吸附动力学实验结果拟合度更高;相比Freundlich等模型,0#柴油和菜籽油的平衡吸附量与Langmuir吸附等温模型的拟合效果更好;25℃条件下,由Langmuir线性模型得到的0#柴油和菜籽油的最大吸附量Qm分别为32.15 g/g和34.60 g/g。香蒲绒纤维表面粗糙、凹凸不平,主要含有O-H、C=O、C-O等官能团,平均蜡质含量为19.86%。结果表明,香蒲绒纤维是处理含油废水廉价且效果良好的吸附剂,吸附机理以物理吸附为主。
    Abstract: To understand the characteristics and mechanism of the adsorption of oil on cattail fiber, the effects of sorption time, temperature, dose of cattail fiber, and concentration of oil on the sorption of zero diesel and colza oil from aqueous solution were investigated. It took about 15 min to reach adsorption equilibrium; the adsorption capacity of both oils decreased with temperature and cattail fiber dose, and increased with the concentration of the oils. The adsorption process was spontaneous and endothermic, and was well depicted by the pseudo-second-order sorption model. The equilibrium adsorption data for zero diesel and colza oil fitted reasonably well with the Langmuir isotherm. The maximum adsorption capacity of zero diesel and colza oil, obtained from the Langmuir adsorption isotherm, reached 32.15 and 34.60 g/g, respectively, at 25℃. The cattail fiber had a rough and porous surface mainly contained O-H, C=O, and C-O groups; the average wax content of the cattail fiber was 19.86%. The results show that the cattail fiber is a low cost and effective sorbent for the treatment of oily wastewater and physical adsorption is the main sorption mechanism.
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  • 收稿日期:  2015-02-03
  • 刊出日期:  2016-06-03
舒艳, 李科林, 李芸, 汤春芳. 狭叶香蒲绒纤维对油的吸附与机理[J]. 环境工程学报, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
引用本文: 舒艳, 李科林, 李芸, 汤春芳. 狭叶香蒲绒纤维对油的吸附与机理[J]. 环境工程学报, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
shu
Shu Yan, Li Kelin, Li Yun, Tang Chunfang. Adsorption characteristics and mechanism of zero diesel and colza oil by narrow-leaf cattail fiber[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
Citation: Shu Yan, Li Kelin, Li Yun, Tang Chunfang. Adsorption characteristics and mechanism of zero diesel and colza oil by narrow-leaf cattail fiber[J]. Chinese Journal of Environmental Engineering, 2016, 10(6): 2947-2954. doi: 10.12030/j.cjee.201501100
shu

狭叶香蒲绒纤维对油的吸附与机理

  • 1. 中南林业科技大学环境科学与工程学院, 长沙 410004
  • 收稿日期:  2015-02-03
基金项目:

湖南省教育厅项目(13C1141)

湖南省科技厅计划项目(2012FJ3144)

摘要: 为了解香蒲绒纤维对油的吸附性能与机理,通过静态实验,研究了吸附时间、温度、香蒲绒投加量、油浓度对狭叶香蒲绒吸附水溶液中0#柴油、菜籽油的影响。香蒲绒纤维对油的吸附大约15 min达到平衡;2种油类物质的吸附量随温度、香蒲绒投加量增加而降低,随0#柴油和菜籽油含量增加而增加。热力学分析表明,香蒲绒对油类物质的吸附过程自发而且放热;拟二级动力学模型比拟一级动力学模型对吸附动力学实验结果拟合度更高;相比Freundlich等模型,0#柴油和菜籽油的平衡吸附量与Langmuir吸附等温模型的拟合效果更好;25℃条件下,由Langmuir线性模型得到的0#柴油和菜籽油的最大吸附量Qm分别为32.15 g/g和34.60 g/g。香蒲绒纤维表面粗糙、凹凸不平,主要含有O-H、C=O、C-O等官能团,平均蜡质含量为19.86%。结果表明,香蒲绒纤维是处理含油废水廉价且效果良好的吸附剂,吸附机理以物理吸附为主。

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