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李振炫, 黄利东, 陈艳芳, 缪晔, 刘大刚, 许正文. 开放系统下丙二酸在方解石上的吸附[J]. 环境化学, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
引用本文: 李振炫, 黄利东, 陈艳芳, 缪晔, 刘大刚, 许正文. 开放系统下丙二酸在方解石上的吸附[J]. 环境化学, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
shu
LI Zhenxuan, HUANG Lidong, CHEN Yanfang, MIAO Ye, LIU Dagang, XU Zhengwen. Sorption of malonate onto calcite in open-system[J]. Environmental Chemistry, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
Citation: LI Zhenxuan, HUANG Lidong, CHEN Yanfang, MIAO Ye, LIU Dagang, XU Zhengwen. Sorption of malonate onto calcite in open-system[J]. Environmental Chemistry, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
shu

开放系统下丙二酸在方解石上的吸附

  • 1.

    南京信息工程大学环境科学与工程学院, 南京, 210044;

  • 2.

    江苏省大气环境监测与污染控制高技术重点实验室, 南京, 210044;

  • 3.

    江苏省大气环境与装备技术协同创新中心, 南京, 210044;

  • 4.

    南京信息工程大学应用气象学院, 南京, 210044

  • 基金项目:

    国家自然科学基金(41303096,41201515)

    教育部留学回国科研启动基金(S131304001)

    南京信息工程大学科研启动基金(S8111032001)

    国家水体污染控制与治理科技重大专项(2015ZX07204-002)资助.

Sorption of malonate onto calcite in open-system

  • 1.

    School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China;

  • 2.

    Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing, 210044, China;

  • 3.

    Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing, 210044, China;

  • 4.

    School of Applied Meteology, Nanjing University of Information Science & Technology, Nanjing, 210044, China

  • Fund Project:

  • 摘要: 通过批量平衡法, 研究开放系统条件下方解石对丙二酸的吸附特性.结果表明, 丙二酸在方解石上的吸附先快后慢, 3 h后渐趋平衡;当pH值从7.7增加到9.7时, 丙二酸的吸附率逐渐降低, HCO3-和CO32-的竞争效应及方解石表面的静电效应是其主导因素;同一初始浓度下, 与开放系统条件比较, 半封闭系统条件下丙二酸的吸附量显著降低, 推测其原因是半封闭系统中OH-的竞争作用.丙二酸与邻苯二甲酸的等温吸附结果对比发现, 丙二酸的吸附能力较邻苯二甲酸更强, 丙二酸的等温吸附过程符合Langmuir模型, 而邻苯二甲酸的等温吸附过程更符合Freundlich模型, 推测以上差异是由两羧基之间的分子结构不同引起的.
    Abstract: Batch methods were deployed to study the sorption of malonate on calcite in open-system. Results show that: malonate sorption increased rapidly with time initially and then reached between equilibrium within 3 hours. The malonate sorption rate decreased with in pH 7.7—9.7. This is due to the competition effect of HCO3- and CO32-, and the electrostatic effect on the surface; At the same initial concentration, compared to open-system, the malonate adsorption quantity in half-closed system was relatively small, which may be due to the obvious competition effect of OH- in half-closed system. Compared with o-phthalate, malonate sorption capacity was higher and its sorption isotherm was better described by Langmuir model. The sorption isotherm of o-phthalate was better described by Freundlich model. These differences may be attributed to the different structures between their two carboxyl groups.
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  • 收稿日期:  2015-05-30
  • 刊出日期:  2015-10-15
李振炫, 黄利东, 陈艳芳, 缪晔, 刘大刚, 许正文. 开放系统下丙二酸在方解石上的吸附[J]. 环境化学, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
引用本文: 李振炫, 黄利东, 陈艳芳, 缪晔, 刘大刚, 许正文. 开放系统下丙二酸在方解石上的吸附[J]. 环境化学, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
shu
LI Zhenxuan, HUANG Lidong, CHEN Yanfang, MIAO Ye, LIU Dagang, XU Zhengwen. Sorption of malonate onto calcite in open-system[J]. Environmental Chemistry, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
Citation: LI Zhenxuan, HUANG Lidong, CHEN Yanfang, MIAO Ye, LIU Dagang, XU Zhengwen. Sorption of malonate onto calcite in open-system[J]. Environmental Chemistry, 2015, 34(10): 1940-1947. doi: 10.7524/j.issn.0254-6108.2015.10.2015053001
shu

开放系统下丙二酸在方解石上的吸附

  • 1.  南京信息工程大学环境科学与工程学院, 南京, 210044;
  • 2.  江苏省大气环境监测与污染控制高技术重点实验室, 南京, 210044;
  • 3.  江苏省大气环境与装备技术协同创新中心, 南京, 210044;
  • 4.  南京信息工程大学应用气象学院, 南京, 210044
  • 收稿日期:  2015-05-30
基金项目:

国家自然科学基金(41303096,41201515)

教育部留学回国科研启动基金(S131304001)

南京信息工程大学科研启动基金(S8111032001)

国家水体污染控制与治理科技重大专项(2015ZX07204-002)资助.

摘要: 通过批量平衡法, 研究开放系统条件下方解石对丙二酸的吸附特性.结果表明, 丙二酸在方解石上的吸附先快后慢, 3 h后渐趋平衡;当pH值从7.7增加到9.7时, 丙二酸的吸附率逐渐降低, HCO3-和CO32-的竞争效应及方解石表面的静电效应是其主导因素;同一初始浓度下, 与开放系统条件比较, 半封闭系统条件下丙二酸的吸附量显著降低, 推测其原因是半封闭系统中OH-的竞争作用.丙二酸与邻苯二甲酸的等温吸附结果对比发现, 丙二酸的吸附能力较邻苯二甲酸更强, 丙二酸的等温吸附过程符合Langmuir模型, 而邻苯二甲酸的等温吸附过程更符合Freundlich模型, 推测以上差异是由两羧基之间的分子结构不同引起的.

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