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新型正渗透汲取液的试制及其处理浓盐水的应用

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孙嘉绩, 冯轶, 马伟芳, 李轻轻, 严玉林. 新型正渗透汲取液的试制及其处理浓盐水的应用[J]. 环境工程学报, 2017, 11(9): 5020-5028. doi: 10.12030/j.cjee.201610062
引用本文: 孙嘉绩, 冯轶, 马伟芳, 李轻轻, 严玉林. 新型正渗透汲取液的试制及其处理浓盐水的应用[J]. 环境工程学报, 2017, 11(9): 5020-5028. doi: 10.12030/j.cjee.201610062
shu
SUN Jiaji, FENG Yi, MA Weifang, LI Qingqing, YAN Yulin. Preparation of a new type of forword osmosis draw solution and its application in treatment of concentrated brine[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5020-5028. doi: 10.12030/j.cjee.201610062
Citation: SUN Jiaji, FENG Yi, MA Weifang, LI Qingqing, YAN Yulin. Preparation of a new type of forword osmosis draw solution and its application in treatment of concentrated brine[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5020-5028. doi: 10.12030/j.cjee.201610062
shu

新型正渗透汲取液的试制及其处理浓盐水的应用

  • 1.

    北京林业大学环境科学与工程学院, 北京 100083

  • 2.

    北京实验学校, 北京 100037

  • 基金项目:

    北京市科技计划项目（D161100000216002）

  • 中图分类号: X703.1

Preparation of a new type of forword osmosis draw solution and its application in treatment of concentrated brine

  • 1.

    College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China

  • 2.

    Beijing Experimental School, Beijing 100037, China

  • Fund Project:

  • 摘要: 选取柠檬酸盐改良磁性纳米颗粒汲取液作为正渗透汲取液，研究其在浓盐水处理中的应用效果，采用热合成方法控制温度为30、60和90℃时制成了柠檬酸盐改良磁性纳米颗粒（MNP0、MNP1和MNP2）。对3种磁性纳米颗粒进行表征的结果显示，随反应温度的升高，分散性提高，同时温度升高，更有利于柠檬酸盐包覆到磁性纳米颗粒的表面。不同温度条件下合成的3种柠檬酸盐磁性纳米颗粒处理浓盐水测定水通量和反向盐通量研究表明，MNP2的水通量较MNP0和MNP1高，为23 L·（m2·h）-1，且水通量下降较稳定，反向盐通量较小。不同粒径的MNP2处理浓盐水研究结果表明，水通量随粒径的减小呈现增加趋势，粒径为3.5 nm时的渗透压和水通量最高且减压渗透（pressure relief osmosis，PRO）模式下水通量较正渗透（forward osmosis，FO）模式高。
    Abstract: This paper studied on a new type of forword osmosis draw solution comprised of citric acid magnetic nanoparticles and its application in the treatment of concentrated brine. Three kind of magnetic nanoparticles (MNP0, MNP1 and MNP2) were made with the method of hydrothermal synthesis by controlling the temperature in 30,60 and 90℃. The analysis of the three magnetic nanoparticles characterization showed that their dispersion in the solution increased with the reaction temperature increasing, because the citric acid can be coated onto the surface of the magnetic nanoparticles easily in high temperature. The highest water flux amount was 23 L·(m2·h)-1 in MNP2 draw solution. The decrease amount of water flux was more stable and the reverse salt flux was also smaller for MNP2 compared with the MNP0 and MNP1. The water flux increased with the decreasing of particle size for MNP2, and it is much higher in PRO mode than FO mode.
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出版历程
  • 收稿日期:  2016-12-15
  • 刊出日期:  2017-08-26

新型正渗透汲取液的试制及其处理浓盐水的应用

  • 1. 北京林业大学环境科学与工程学院, 北京 100083
  • 2. 北京实验学校, 北京 100037
  • 收稿日期:  2016-12-15
基金项目:

北京市科技计划项目（D161100000216002）

摘要: 选取柠檬酸盐改良磁性纳米颗粒汲取液作为正渗透汲取液，研究其在浓盐水处理中的应用效果，采用热合成方法控制温度为30、60和90℃时制成了柠檬酸盐改良磁性纳米颗粒（MNP0、MNP1和MNP2）。对3种磁性纳米颗粒进行表征的结果显示，随反应温度的升高，分散性提高，同时温度升高，更有利于柠檬酸盐包覆到磁性纳米颗粒的表面。不同温度条件下合成的3种柠檬酸盐磁性纳米颗粒处理浓盐水测定水通量和反向盐通量研究表明，MNP2的水通量较MNP0和MNP1高，为23 L·（m2·h）-1，且水通量下降较稳定，反向盐通量较小。不同粒径的MNP2处理浓盐水研究结果表明，水通量随粒径的减小呈现增加趋势，粒径为3.5 nm时的渗透压和水通量最高且减压渗透（pressure relief osmosis，PRO）模式下水通量较正渗透（forward osmosis，FO）模式高。

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