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氧化石墨烯的制备、表征及其对发酵液中鼠李糖脂吸附分离特性

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崔莹, 聂麦茜, 聂红云, 第五振军, 孙涵. 氧化石墨烯的制备、表征及其对发酵液中鼠李糖脂吸附分离特性[J]. 环境化学, 2019, (10): 2294-2299. doi: 10.7524/j.issn.0254-6108.2018112604
引用本文: 崔莹, 聂麦茜, 聂红云, 第五振军, 孙涵. 氧化石墨烯的制备、表征及其对发酵液中鼠李糖脂吸附分离特性[J]. 环境化学, 2019, (10): 2294-2299. doi: 10.7524/j.issn.0254-6108.2018112604
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CUI Ying, NIE Maiqian, NIE Hongyun, DIWU Zhenjun, SUN Han. Preparation and characterization of graphene oxide and its adsorption and separation properties of rhamnolipid from fermentation broth[J]. Environmental Chemistry, 2019, (10): 2294-2299. doi: 10.7524/j.issn.0254-6108.2018112604
Citation: CUI Ying, NIE Maiqian, NIE Hongyun, DIWU Zhenjun, SUN Han. Preparation and characterization of graphene oxide and its adsorption and separation properties of rhamnolipid from fermentation broth[J]. Environmental Chemistry, 2019, (10): 2294-2299. doi: 10.7524/j.issn.0254-6108.2018112604
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氧化石墨烯的制备、表征及其对发酵液中鼠李糖脂吸附分离特性

  • 1. 西安建筑科技大学环境与市政工程学院, 西安, 710055;

  • 2. 陕西省膜分离重点实验室, 西安, 710055

    • 通讯作者: 聂麦茜, E-mail: niemaiqian@xauat.edu.cn ; 
  • 基金项目:

    中国博士后科学基金（2018M633479），陕西省科技厅重点产业创新链项目（20192DLSF05-04）和陕西省教育厅科研计划项目（18JK0449）资助.

Preparation and characterization of graphene oxide and its adsorption and separation properties of rhamnolipid from fermentation broth

  • 1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China;

  • 2. Key Laboratory of Membrane Separation of Shannxi Province, Xi'an, 710055, China

    • Corresponding author: NIE Maiqian, niemaiqian@xauat.edu.cn ; 
  • Fund Project: Supported by China Postdoctoral Science Foundation (2018M633479), Shaanxi Provincial Department of Science And Technology Key Industrial Innovation Chain Project (20192DLSF05-04) and Shaanxi Provincial Department of Education Scientific Research Program (18JK0449).

  • 摘要: 以改良的Hummers氧化法制备了氧化石墨烯（GO），并研究其对铜绿假单胞菌发酵液中鼠李糖脂（Rha）的吸附分离特性.结果表明，通过Hummers氧化法，可使石墨粉氧化为GO，并形成层数很少甚至单层的GO片，使所得GO的比表面积较石墨粉显著增大.以所得GO对铜绿假单胞菌NY3发酵液中的Rha进行吸附，发现当发酵液的pH值为4.0、吸附温度为25℃时，Rha在GO表面的吸附可迅速平衡，其最大吸附量约为1.7 g·g-1.pH 13的氢氧化钠溶液可使Rha一次洗脱回收率为86.1%，是较佳的洗脱剂.重复利用实验表明，且所得的GO吸附剂可重复利用.
    Abstract: Graphene oxide (GO) was prepared using the method of improved Hummers, and its adsorption and separation properties of rhamnolipid from the fermentation broth of P. aeruginosa were studied. The results showed that, graphene has been oxidize and peeled to fewer layers with obviously lager specific surface area after oxidized by Hummer method. The adsorption of rhamnolipid on the surface of GO reached equilibrium quickly and the maximum adsorption amounts got to be 1.7 g·g-1 when pH and temperature of the fermentation broth was 4.0 and 25℃ respectively. The once desorption rate of rhamnolipid reached 86.1% using sodium hydroxide solution with pH of 13 as optimum desorption reagent. Meanwhile, the adsorbents of GO could be used recycling.
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    [7] 任方旭, 孙全莲, 董文博, 等. 发酵液中鼠李糖脂的活性炭吸附-酸沉淀分离[J]. 化学工程, 2016, 44(7):15-18.

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  • 收稿日期:  2018-11-26

氧化石墨烯的制备、表征及其对发酵液中鼠李糖脂吸附分离特性

    通讯作者: 聂麦茜, E-mail: niemaiqian@xauat.edu.cn ; 
  • 1. 西安建筑科技大学环境与市政工程学院, 西安, 710055;
  • 2. 陕西省膜分离重点实验室, 西安, 710055
  • 收稿日期:  2018-11-26
基金项目:

中国博士后科学基金（2018M633479），陕西省科技厅重点产业创新链项目（20192DLSF05-04）和陕西省教育厅科研计划项目（18JK0449）资助.

摘要: 以改良的Hummers氧化法制备了氧化石墨烯（GO），并研究其对铜绿假单胞菌发酵液中鼠李糖脂（Rha）的吸附分离特性.结果表明，通过Hummers氧化法，可使石墨粉氧化为GO，并形成层数很少甚至单层的GO片，使所得GO的比表面积较石墨粉显著增大.以所得GO对铜绿假单胞菌NY3发酵液中的Rha进行吸附，发现当发酵液的pH值为4.0、吸附温度为25℃时，Rha在GO表面的吸附可迅速平衡，其最大吸附量约为1.7 g·g-1.pH 13的氢氧化钠溶液可使Rha一次洗脱回收率为86.1%，是较佳的洗脱剂.重复利用实验表明，且所得的GO吸附剂可重复利用.

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