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pH值对有机蒙脱土吸附苯酚的影响

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杨柳燕, 肖琳, 周治, 裴大平, 王晓蓉. pH值对有机蒙脱土吸附苯酚的影响[J]. 环境化学, 2004, 23(2): 183-187.
引用本文: 杨柳燕, 肖琳, 周治, 裴大平, 王晓蓉. pH值对有机蒙脱土吸附苯酚的影响[J]. 环境化学, 2004, 23(2): 183-187.
shu
YANG Liu-yan, XIAO Lin, ZHOU Zhi, PEI Da-ping, WANG Xiao-rong . AFFECT OF pH ON ADSORPTION OF PHENOL TO ORGANIC MONTMORILLONITE[J]. Environmental Chemistry, 2004, 23(2): 183-187.
Citation: YANG Liu-yan, XIAO Lin, ZHOU Zhi, PEI Da-ping, WANG Xiao-rong . AFFECT OF pH ON ADSORPTION OF PHENOL TO ORGANIC MONTMORILLONITE[J]. Environmental Chemistry, 2004, 23(2): 183-187.
shu

pH值对有机蒙脱土吸附苯酚的影响

  • 1.

    污染控制与资源化研究国家重点实验室, 南京大学环境学院, 南京, 210093

  • 基金项目:

    国家自然科学基金资助项目(29777014)

    江苏省环保局资助项目(9710)

AFFECT OF pH ON ADSORPTION OF PHENOL TO ORGANIC MONTMORILLONITE

  • 1.

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093

  • Fund Project:

  • 摘要: 利用十六烷基三甲基溴化铵(HDTMA)改性的蒙脱土来处理含酚废水,了解pH值对有机蒙脱土吸附苯酚的影响.结果表明:不论是酸性还是碱性含酚水溶液,加入有机蒙脱土后其pH值都趋向中性,因此,有机蒙脱土对酸碱具有良好的缓冲能力.在相同pH条件下,吸附在有机蒙脱土上苯酚的数量随着其改性量的提高而增加.在碱性条件下,被有机蒙脱土吸附的苯酚可以发生解吸,pH值愈高,有机蒙脱土吸附的苯酚数量愈少,因此,吸附在有机蒙脱土上的苯酚在碱性条件下是不稳定的.通过碱再生有机蒙脱土又能吸附水溶液中的苯酚,但是其吸附苯酚的能力有所下降.
    Abstract: In order to probe the affent of pH on adsorptive capacity of phenol to modified montmorillonite,the natural montmorillonite was modified with different amounts of hexadeeyltrimethylammonium bremide(HDTMA)according to its cation exchange capacity(CEC)and was used to treat phenolic wastewater.The results of experiments showed that organic montmorillonite could strongly neutralize acidic or alkali phenolic wastewater.If more mounts of HDTMA were exchanged in montmorillonite,more mounts of phenol were adsotrbed under same pH.Amounts of phenol adsorbed to organic montmorillonite decreased when pH became high.Thus,phenol asdorbed organic montmorillonite could be regenerated under high pH circumstances.Alkali regenerated organic montmorillonite could adsorb phenol again though its adsorption capability of phenol decreased lightly.
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  • [1] 王晓蓉,吴顺年,李万山等.改性粘土矿物对污染环境修复的研究进展.环境化学,1997,16(1):1-14
    [2] Gao B,Yang L,Wang X et al.,Influence of Modified Soils on the Removal of Diesel Fuel Oil from Water and the Growth of Oil Degradation Micro-Organism.Chemosphere,2000,41:419-426
    [3] 朱利中,张淳,周立峰等.有机膨润土吸附苯酚的性能及其在水处理中的应用初探.中国环境科学,1994,14(5):346-349
    [4] Zhu L,Li Y,Zhang J,Sorption of Organobentonites to Some Organic Pollutants in Water,Environ.Sci.Technol.,1997,31:1407-1410
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  • 收稿日期:  2003-02-25
杨柳燕, 肖琳, 周治, 裴大平, 王晓蓉. pH值对有机蒙脱土吸附苯酚的影响[J]. 环境化学, 2004, 23(2): 183-187.
引用本文: 杨柳燕, 肖琳, 周治, 裴大平, 王晓蓉. pH值对有机蒙脱土吸附苯酚的影响[J]. 环境化学, 2004, 23(2): 183-187.
shu
YANG Liu-yan, XIAO Lin, ZHOU Zhi, PEI Da-ping, WANG Xiao-rong . AFFECT OF pH ON ADSORPTION OF PHENOL TO ORGANIC MONTMORILLONITE[J]. Environmental Chemistry, 2004, 23(2): 183-187.
Citation: YANG Liu-yan, XIAO Lin, ZHOU Zhi, PEI Da-ping, WANG Xiao-rong . AFFECT OF pH ON ADSORPTION OF PHENOL TO ORGANIC MONTMORILLONITE[J]. Environmental Chemistry, 2004, 23(2): 183-187.
shu

pH值对有机蒙脱土吸附苯酚的影响

  • 1. 污染控制与资源化研究国家重点实验室, 南京大学环境学院, 南京, 210093
  • 收稿日期:  2003-02-25
基金项目:

国家自然科学基金资助项目(29777014)

江苏省环保局资助项目(9710)

摘要: 利用十六烷基三甲基溴化铵(HDTMA)改性的蒙脱土来处理含酚废水,了解pH值对有机蒙脱土吸附苯酚的影响.结果表明:不论是酸性还是碱性含酚水溶液,加入有机蒙脱土后其pH值都趋向中性,因此,有机蒙脱土对酸碱具有良好的缓冲能力.在相同pH条件下,吸附在有机蒙脱土上苯酚的数量随着其改性量的提高而增加.在碱性条件下,被有机蒙脱土吸附的苯酚可以发生解吸,pH值愈高,有机蒙脱土吸附的苯酚数量愈少,因此,吸附在有机蒙脱土上的苯酚在碱性条件下是不稳定的.通过碱再生有机蒙脱土又能吸附水溶液中的苯酚,但是其吸附苯酚的能力有所下降.

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