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热解气活化的活性炭对水体中甲萘威的吸附性能

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李伟玉, 李爱民. 热解气活化的活性炭对水体中甲萘威的吸附性能[J]. 环境工程学报, 2018, 12(1): 41-48. doi: 10.12030/j.cjee.201704057
引用本文: 李伟玉, 李爱民. 热解气活化的活性炭对水体中甲萘威的吸附性能[J]. 环境工程学报, 2018, 12(1): 41-48. doi: 10.12030/j.cjee.201704057
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LI Weiyu, LI Aimin. Adsorption performance of carbaryl of wastewater on activated carbons prepared by pyrolysis gas activation[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 41-48. doi: 10.12030/j.cjee.201704057
Citation: LI Weiyu, LI Aimin. Adsorption performance of carbaryl of wastewater on activated carbons prepared by pyrolysis gas activation[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 41-48. doi: 10.12030/j.cjee.201704057
shu

热解气活化的活性炭对水体中甲萘威的吸附性能

  • 1.

    大连理工大学环境学院,教育部工业生态与环境工程重点实验室,大连 116024

  • 基金项目:

    国家水体污染控制与治理科技重大专项(2012ZX07202003-004)

    中央高校基本科研业务费专项 (DUT16LAB04)

    辽宁省自然科学基金资助项目(201602182)

Adsorption performance of carbaryl of wastewater on activated carbons prepared by pyrolysis gas activation

  • 1.

    Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China

  • Fund Project:

  • 摘要: 以生物质混合压缩颗粒为原料,在600～900 ℃活化温度下,循环利用热解气制备活性炭,考察热解气的活化作用及活性炭对农药甲萘威的吸附性能。结果表明:热解气具有明显的活化作用,经过活化的炭与热解炭相比孔结构更加发达,表面更加粗糙；活化温度对活性炭理化性质具有显著影响,随温度升高,活性炭芳香性升高,极性降低,含氧官能团逐渐减少,比表面积由239.00 m2·g-1增加到629.20 m2·g-1,平均孔径由5.438 nm减小至3.005 nm；Freundlich模型能够很好地拟合活性炭对甲萘威的吸附等温线,随活化温度升高,活性炭吸附能力增大；吸附动力学更符合伪二级反应动力学模型,60 h内基本实现吸附平衡；当活化温度为800 ℃,单位原料对甲萘威的吸附量最大。
    Abstract: In this study, activated carbons (ACs) were prepared from mixed biomass pellet, which were activated by pyrolysis gas at the temperatures from 600 ℃ to 900 ℃. Batch experiments were performed to investigate the activation effects of pyrolysis gas and adsorption properties of carbaryl onto ACs. The pyrolysis gas obviously promoted the development of pore structure, and the surface of carbons became rougher after activation process. With the increase of activation temperatures, the aromaticity of activated carbons increased, polarity and surface oxygen functional group decreased, SBET increased from 239.00 m2·g-1 to 629.20 m2·g-1 and DP decreased from 5.438 nm to 3.005 nm. Freundlich model well described adsorption isotherms of carbaryl on ACs, and the adsorption capacity of ACs increased with activation temperature. Pseudo-second order model more fit the adsorption kinetics, and the adsorption nearly reached equilibrium within 60 h. The highest adsorption capacity yield was achieved at the activation temperature of 800 ℃.
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  • 刊出日期:  2018-01-14

热解气活化的活性炭对水体中甲萘威的吸附性能

  • 1. 大连理工大学环境学院,教育部工业生态与环境工程重点实验室,大连 116024
基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07202003-004)

中央高校基本科研业务费专项 (DUT16LAB04)

辽宁省自然科学基金资助项目(201602182)

摘要: 以生物质混合压缩颗粒为原料,在600～900 ℃活化温度下,循环利用热解气制备活性炭,考察热解气的活化作用及活性炭对农药甲萘威的吸附性能。结果表明:热解气具有明显的活化作用,经过活化的炭与热解炭相比孔结构更加发达,表面更加粗糙；活化温度对活性炭理化性质具有显著影响,随温度升高,活性炭芳香性升高,极性降低,含氧官能团逐渐减少,比表面积由239.00 m2·g-1增加到629.20 m2·g-1,平均孔径由5.438 nm减小至3.005 nm；Freundlich模型能够很好地拟合活性炭对甲萘威的吸附等温线,随活化温度升高,活性炭吸附能力增大；吸附动力学更符合伪二级反应动力学模型,60 h内基本实现吸附平衡；当活化温度为800 ℃,单位原料对甲萘威的吸附量最大。

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