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不同孔结构对活性炭动态吸附高浓度甲苯的影响

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宋磊, 王春颖, 陈虹霖, 王夔. 不同孔结构对活性炭动态吸附高浓度甲苯的影响[J]. 环境工程学报, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
引用本文: 宋磊, 王春颖, 陈虹霖, 王夔. 不同孔结构对活性炭动态吸附高浓度甲苯的影响[J]. 环境工程学报, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
shu
SONG Lei, WANG Chunying, CHEN Honglin, WANG Kui. Effects of pore structure on activated carbon adsorption on toluene with high concentration[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
Citation: SONG Lei, WANG Chunying, CHEN Honglin, WANG Kui. Effects of pore structure on activated carbon adsorption on toluene with high concentration[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
shu

不同孔结构对活性炭动态吸附高浓度甲苯的影响

  • 1.

    华侨大学化工学院, 厦门, 361021

  • 2.

    西南民族大学图书馆, 成都, 610000

  • 基金项目:

    华侨大学高层次人才科研启动基金（11BS215）

  • 中图分类号: X701

Effects of pore structure on activated carbon adsorption on toluene with high concentration

  • 1.

    College of Chemical Engineering, Huaqiao University, Xiamen 361021, China

  • 2.

    Southwest University of Nationalties Library, Chengdu 610000, China

  • Fund Project:

  • 摘要: 研究不同孔结构的活性炭对于高浓度甲苯的吸附性能、吸附行为和吸附位的影响。结果表明，微孔活性炭对甲苯的吸附量随着微孔孔容的增大而增大，0.6~1.2 nm的微孔孔容和甲苯吸附量存在良好的线性正相关。当中孔孔容达到微孔孔容的0.32倍时，微孔利用率达到100%，甲苯首先吸附在微孔中，待微孔吸附饱和，吸附位向中孔转移，中孔不仅起到通道作用，同时也起到吸附作用；当中孔孔容继续增大，增加的中孔容量主要起到吸附作用，最高吸附量达565 mg·g-1，是已有研究的2.5倍。随着吸附温度升高，饱和吸附量减少，表明活性炭吸附甲苯是以物理吸附主。
    Abstract: To explore the effects of activated carbon pore structure on its adsorption properties, behavior, and potential, adsorption of toluene at a high concentration onto activated carbons was investigated via kinetic adsorption methods. The results showed that the adsorption amount of toluene increased as the micropore volume increased and that there was a good linear relationship between toluene adsorptive capacity and microporous activated carbon pore volume when the aperture was from 0.6 to 1.2 nm. When the ratio between mesopore and micropore volume reached 0.32, the effective micropore could be fully utilized. The adsorption potential of mesoporous activated carbon for toluene was initially located in the micropore and then transferred to the mesopore when the micropore was filled. The mesopore played a role in not only the channel, but also the adsorption of toluene. When the ratio reached 1, the saturated adsorption amount reached 565 mg·g-1, which is 2.5 times higher than those of previous studies. As the adsorption temperature increased, the saturated adsorption amount decreased, which indicated that the adsorption behavior of toluene on activated carbon was physical adsorption.
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  • 收稿日期:  2015-10-26
  • 刊出日期:  2017-01-05
宋磊, 王春颖, 陈虹霖, 王夔. 不同孔结构对活性炭动态吸附高浓度甲苯的影响[J]. 环境工程学报, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
引用本文: 宋磊, 王春颖, 陈虹霖, 王夔. 不同孔结构对活性炭动态吸附高浓度甲苯的影响[J]. 环境工程学报, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
shu
SONG Lei, WANG Chunying, CHEN Honglin, WANG Kui. Effects of pore structure on activated carbon adsorption on toluene with high concentration[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
Citation: SONG Lei, WANG Chunying, CHEN Honglin, WANG Kui. Effects of pore structure on activated carbon adsorption on toluene with high concentration[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 457-464. doi: 10.12030/j.cjee.201508223
shu

不同孔结构对活性炭动态吸附高浓度甲苯的影响

  • 1. 华侨大学化工学院, 厦门, 361021
  • 2. 西南民族大学图书馆, 成都, 610000
  • 收稿日期:  2015-10-26
基金项目:

华侨大学高层次人才科研启动基金（11BS215）

摘要: 研究不同孔结构的活性炭对于高浓度甲苯的吸附性能、吸附行为和吸附位的影响。结果表明，微孔活性炭对甲苯的吸附量随着微孔孔容的增大而增大，0.6~1.2 nm的微孔孔容和甲苯吸附量存在良好的线性正相关。当中孔孔容达到微孔孔容的0.32倍时，微孔利用率达到100%，甲苯首先吸附在微孔中，待微孔吸附饱和，吸附位向中孔转移，中孔不仅起到通道作用，同时也起到吸附作用；当中孔孔容继续增大，增加的中孔容量主要起到吸附作用，最高吸附量达565 mg·g-1，是已有研究的2.5倍。随着吸附温度升高，饱和吸附量减少，表明活性炭吸附甲苯是以物理吸附主。

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