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酸反应介质对柚子皮水热炭表面性质及吸附性能的影响

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刘德明, 赵玮林, 邬克彬, 姚登辉, 刘永贤, 傅春燕, 周南. 酸反应介质对柚子皮水热炭表面性质及吸附性能的影响[J]. 环境化学, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
引用本文: 刘德明, 赵玮林, 邬克彬, 姚登辉, 刘永贤, 傅春燕, 周南. 酸反应介质对柚子皮水热炭表面性质及吸附性能的影响[J]. 环境化学, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
shu
LIU Deming, ZHAO Weilin, WU Kebin, YAO Denghui, LIU Yongxian, FU Chunyan, ZHOU Nan. Effect of acid reaction medium on the surface characteristics and adsorption properties of hydrochar from pomelo peel[J]. Environmental Chemistry, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
Citation: LIU Deming, ZHAO Weilin, WU Kebin, YAO Denghui, LIU Yongxian, FU Chunyan, ZHOU Nan. Effect of acid reaction medium on the surface characteristics and adsorption properties of hydrochar from pomelo peel[J]. Environmental Chemistry, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
shu

酸反应介质对柚子皮水热炭表面性质及吸附性能的影响

  • 1. 湖南农业大学资源环境学院, 长沙, 410128;

  • 2. 湖南农业大学化学与材料科学学院, 长沙, 410128;

  • 3. 广西农业科学院农业资源与环境研究所, 南宁, 530000;

  • 4. 邵阳学院药学院, 邵阳, 422000

    • 通讯作者: 刘永贤, E-mail: 46636049@qq.com ;  周南, E-mail: zhounan@hunau.edu.cn
  • 基金项目:

    国家重点研发计划项目（2016YED0800705），广西科技重大专项（AA17202026），湖南省教育厅科研基金（17C1420），邵阳市科技局科研基金（2016ZD16）和2019年大学生创新创业训练计划国家级项目（201910537100）资助.

Effect of acid reaction medium on the surface characteristics and adsorption properties of hydrochar from pomelo peel

  • 1. College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China;

  • 2. College of Chemistry and Material Science, Hunan Agricultural University, Changsha, 410128, China;

  • 3. The Research Institute of Agricultural Resource and Environment, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China;

  • 4. College of Pharmacy, Hunan Shaoyang University, Shaoyang, 422000, China

    • Corresponding authors: LIU Yongxian, 46636049@qq.com ;  ZHOU Nan, zhounan@hunau.edu.cn
  • Fund Project: Supported by National Key Research and Development Project (2016YED0800705),Major Science and Technology Projects in Guangxi (AA17202026),Research Fund of Hunan Provincial Department of Education (17C1420), Scientific Research Fund of Shaoyang Science and Technology Bureau (2016ZD16) and the College Student's Innovative Entrepreneurial Training Program (20190537100).

  • 摘要: 以柚子皮为原材料，磷酸和醋酸为反应介质，通过水热炭化法制备水热炭，探索了酸种类和酸浓度对水热炭表面性质，以及Pb2+、Cr6+、Cd2+、Cu2+等4种重金属离子和亚甲基蓝吸附性能的影响，并利用光谱分析法对柚子皮水热炭的各项性能进行了表征与分析.结果表明，在不同的酸反应介质下所获得的炭微球尺寸大小有较大的差异，材料颗粒的大小与其吸附性能存在较为密切的关系，颗粒越小吸附性能越强.两种酸反应介质条件下获得的水热炭对4种重金属离子都具有一定的吸附效果，其中以磷酸为反应介质处理后的水热炭材料对Pb2+的吸附效果最好，其最高吸附量为20.11 mg·g-1，最高吸附率为20.13%；而以醋酸为反应介质处理后的水热炭材料对Cr6+的吸附效果最好，其最高吸附量为19.38 mg·g-1，最高吸附率为18.53%.所用酸种类对其表面活性官能团的种类也具有重要影响，与醋酸条件下制备的柚子皮水热炭相比，磷酸条件下制备的水热炭具有丰富的醚键，采用浓度为60%的磷酸所制备的柚子皮水热炭对亚甲基蓝吸附效果最好，其吸附量为56.30 mg·g-1，吸附率高达92.87%.由此可见，不同种类的酸以及酸的浓度均能改善柚子皮水热炭表面性状以及对重金属和亚甲基蓝的吸附性能，这为生产上制备新型的水热炭吸附材料处理工业和农业污水、资源化利用柚子皮生活垃圾提供了科学依据.
    Abstract: Using pomelo peel as raw material, phosphoric acid and acetic acid as reaction medium, the study explored the effects of acid types and acid concentration on the surface properties of hydrothermal charcoal, as well as on the adsorption properties of the heavy metal ions (such as Pb2+, Cr6+, Cd2+, and Cu2+) and methylene blue by hydrothermal carbonization method. Then it analyzed the properties of citron peel hydrothermal charcoal by spectroscopic analysis. The results showed that there were large differences among the sizes of carbon microspheres obtained from reaction media with different acid types. In addition, the size of carbon microspheres correlated closely with the adsorption. Specifically, the smaller the sizes, the stronger the adsorption. The hydrothermal carbon obtained under the conditions of the two acid reaction media had certain adsorption effects on the four heavy metal ions. Among them, the hydrothermal carbon material treated with phosphoric acid as the reaction medium had the best adsorption effect on Pb2+, and the highest adsorption capacity was 20.11 mg·g-1 with the highest adsorption rate up to 20.13%. While that treated with acetic acid as the reaction medium had the best adsorption effect on Cr6+, and the highest adsorption amount was 19.38 mg·g-1 with the highest adsorption rate of 18.53%. The acid types also had important effects on the kinds of surface-active functional groups. The hydrothermal charcoal prepared under phosphoric acid conditions had richer ether bonds than that under acetic acid conditions. Moreover, the hydrothermal charcoal using 60% concentration of phosphoric acid had strongest adsorption on methylene blue with 56.30 mg·g-1 adsorption capacity and 92.87% adsorption rate. In summary, both acid kinds and acid concentrations could improve the surface properties of citron peel hydrothermal charcoal and the adsorption performance of heavy metals and methylene blue, which would provide scientific basis for production of new hydrothermal charcoal adsorption material.
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  • 收稿日期:  2019-07-15
刘德明, 赵玮林, 邬克彬, 姚登辉, 刘永贤, 傅春燕, 周南. 酸反应介质对柚子皮水热炭表面性质及吸附性能的影响[J]. 环境化学, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
引用本文: 刘德明, 赵玮林, 邬克彬, 姚登辉, 刘永贤, 傅春燕, 周南. 酸反应介质对柚子皮水热炭表面性质及吸附性能的影响[J]. 环境化学, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
shu
LIU Deming, ZHAO Weilin, WU Kebin, YAO Denghui, LIU Yongxian, FU Chunyan, ZHOU Nan. Effect of acid reaction medium on the surface characteristics and adsorption properties of hydrochar from pomelo peel[J]. Environmental Chemistry, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
Citation: LIU Deming, ZHAO Weilin, WU Kebin, YAO Denghui, LIU Yongxian, FU Chunyan, ZHOU Nan. Effect of acid reaction medium on the surface characteristics and adsorption properties of hydrochar from pomelo peel[J]. Environmental Chemistry, 2020, (10): 2921-2928. doi: 10.7524/j.issn.0254-6108.2019071504
shu

酸反应介质对柚子皮水热炭表面性质及吸附性能的影响

    通讯作者: 刘永贤, E-mail: 46636049@qq.com ;  周南, E-mail: zhounan@hunau.edu.cn
  • 1. 湖南农业大学资源环境学院, 长沙, 410128;
  • 2. 湖南农业大学化学与材料科学学院, 长沙, 410128;
  • 3. 广西农业科学院农业资源与环境研究所, 南宁, 530000;
  • 4. 邵阳学院药学院, 邵阳, 422000
  • 收稿日期:  2019-07-15
基金项目:

国家重点研发计划项目（2016YED0800705），广西科技重大专项（AA17202026），湖南省教育厅科研基金（17C1420），邵阳市科技局科研基金（2016ZD16）和2019年大学生创新创业训练计划国家级项目（201910537100）资助.

摘要: 以柚子皮为原材料，磷酸和醋酸为反应介质，通过水热炭化法制备水热炭，探索了酸种类和酸浓度对水热炭表面性质，以及Pb2+、Cr6+、Cd2+、Cu2+等4种重金属离子和亚甲基蓝吸附性能的影响，并利用光谱分析法对柚子皮水热炭的各项性能进行了表征与分析.结果表明，在不同的酸反应介质下所获得的炭微球尺寸大小有较大的差异，材料颗粒的大小与其吸附性能存在较为密切的关系，颗粒越小吸附性能越强.两种酸反应介质条件下获得的水热炭对4种重金属离子都具有一定的吸附效果，其中以磷酸为反应介质处理后的水热炭材料对Pb2+的吸附效果最好，其最高吸附量为20.11 mg·g-1，最高吸附率为20.13%；而以醋酸为反应介质处理后的水热炭材料对Cr6+的吸附效果最好，其最高吸附量为19.38 mg·g-1，最高吸附率为18.53%.所用酸种类对其表面活性官能团的种类也具有重要影响，与醋酸条件下制备的柚子皮水热炭相比，磷酸条件下制备的水热炭具有丰富的醚键，采用浓度为60%的磷酸所制备的柚子皮水热炭对亚甲基蓝吸附效果最好，其吸附量为56.30 mg·g-1，吸附率高达92.87%.由此可见，不同种类的酸以及酸的浓度均能改善柚子皮水热炭表面性状以及对重金属和亚甲基蓝的吸附性能，这为生产上制备新型的水热炭吸附材料处理工业和农业污水、资源化利用柚子皮生活垃圾提供了科学依据.

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