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水热法制备榴莲碳对水体中四环素的去除性能

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徐奕, 孙宝瑞, 彭亮, 曾清如, 铁柏清, 雷鸣, 邵继海. 水热法制备榴莲碳对水体中四环素的去除性能[J]. 环境化学, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
引用本文: 徐奕, 孙宝瑞, 彭亮, 曾清如, 铁柏清, 雷鸣, 邵继海. 水热法制备榴莲碳对水体中四环素的去除性能[J]. 环境化学, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
shu
XU Yi, SUN Baorui, PENG Liang, ZENG Qingru, TIE Boqing, LEI Ming, SHAO Jihai. Hydrothermal preparation of durian biochar and its application on removal of tetracycline from aqueous solution[J]. Environmental Chemistry, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
Citation: XU Yi, SUN Baorui, PENG Liang, ZENG Qingru, TIE Boqing, LEI Ming, SHAO Jihai. Hydrothermal preparation of durian biochar and its application on removal of tetracycline from aqueous solution[J]. Environmental Chemistry, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
shu

水热法制备榴莲碳对水体中四环素的去除性能

  • 1.

    湖南农业大学资源环境学院, 长沙, 410128

  • 基金项目:

    湖南农业大学大学生创新实验项目（XCX14096），国家自然科学青年基金（41401260），湖南省自然科学基金（13JJ04068），湖南省科技厅重点项目（2015NK3015），湖南农业大学1515人才基金资助.

Hydrothermal preparation of durian biochar and its application on removal of tetracycline from aqueous solution

  • 1.

    College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, China

  • Fund Project: Supported by the Special Fund for Innovative Experimental Project of College Students(XCX14096), the National Natural Science Youth Foundation Project of China(41401260), Project of Natural Science Foundation of Hunan Province(13JJ04068), Key Project of Science and Technology Department of Hunan Province(2015NK3015), Hunan Agricultural University 1515 talent fund.

  • 摘要: 本文利用榴莲壳和氯化高铁水热法制备具有磁性的榴莲碳，利用XRD、FTIR和SEM对榴莲碳进行结构表征，并研究榴莲碳对水体中四环素的吸附性能，以及水热反应温度、溶液pH和盐浓度等对榴莲碳吸附去除四环素性能的影响.结果表明，在水热温度170℃加热10 h条件下制备的榴莲碳D170具有明显的纳米片状和颗粒状结构，随着温度的升高，制备的榴莲碳XRD衍射峰增强，形成的结晶更好.吸附实验表明，随着水热制备温度的升高，制备的榴莲碳对四环素的吸附去除率呈降低趋势.榴莲碳对四环素的吸附热力学模型拟合表明：D170、D180和D200对水体中四环素的最大吸附容量分别为153.97 mg·g-1、80.26 mg·g-1和34.14 mg·g-1，其中D170对四环素的吸附效果最好，最佳吸附溶液pH值约为6.0，吸附热力学过程符合Freundich模型，吸附动力学过程符合假二级动力学模型.溶液中添加NaCl能促进榴莲碳对四环素的吸附作用，当NaCl浓度高于0.1 mol·L-1，榴莲碳对四环素的去除率达到100%；而添加Ca（NO3）2可降低榴莲碳对四环素的吸附能力，当Ca（NO3）2浓度从0.1 mol·L-1增加到1.0 mol·L-1时，水溶液中四环素的去除率从93%降低到78%.
    Abstract: Magnetic durian biochar was prepared with durian shells and iron chloride using hydrothermal method, and its surface properties were characterized by XRD, FTIR and SEM. The removal efficiency of tetracycline(TC) under different reaction conditions were than studied. The hydrothermal temperature, pH, adsorption kinetics and adsorption isothermal, salt efffect on the removal of TC in aqueous solutions were investivagated in detail. The results showed that the durian biochar prepared at hydrothermal temperature of 170℃ (D170) possessed nano flake and granular structures. With the increase of temperature, the XRD diffraction peak become stronger, and the crystallization was better. The adsorption experiment showed that with the increase of hydrothermal temperature, the removal efficiency of tetracycline on durian biochar decreased. Adsorption isotherm model fitting indicated the maximum adsorption capacity of D170, D180 and D200 for tetracycline was 153.97 mg·g-1, 80.26 mg·g-1and 34.14 mg·g-1, respectively. Among them, D170 had the highest removal efficiency, and the optimal pH was 6.0. The adsorption process was fitted with the Freundlich model, and the kinetics was pseudo-second-order reaction. NaCl greatly enhanced the removal of TC by durian biochar, and the remvoal efficency of TC reached 100% when NaCl was more than 0.1 mol·L-1. However, Ca(NO3)2 inhibited the TC removal, and the remvoal efficency decreased from 93% to 78% when the Ca(NO3)2 concentration was increased from 0.1 mol·L-1 to 1.0 mol·L-1.
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  • 收稿日期:  2016-03-20
  • 刊出日期:  2016-07-15
徐奕, 孙宝瑞, 彭亮, 曾清如, 铁柏清, 雷鸣, 邵继海. 水热法制备榴莲碳对水体中四环素的去除性能[J]. 环境化学, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
引用本文: 徐奕, 孙宝瑞, 彭亮, 曾清如, 铁柏清, 雷鸣, 邵继海. 水热法制备榴莲碳对水体中四环素的去除性能[J]. 环境化学, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
shu
XU Yi, SUN Baorui, PENG Liang, ZENG Qingru, TIE Boqing, LEI Ming, SHAO Jihai. Hydrothermal preparation of durian biochar and its application on removal of tetracycline from aqueous solution[J]. Environmental Chemistry, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
Citation: XU Yi, SUN Baorui, PENG Liang, ZENG Qingru, TIE Boqing, LEI Ming, SHAO Jihai. Hydrothermal preparation of durian biochar and its application on removal of tetracycline from aqueous solution[J]. Environmental Chemistry, 2016, 35(7): 1452-1460. doi: 10.7524/j.issn.0254-6108.2016.07.2016032001
shu

水热法制备榴莲碳对水体中四环素的去除性能

  • 1. 湖南农业大学资源环境学院, 长沙, 410128
  • 收稿日期:  2016-03-20
基金项目:

湖南农业大学大学生创新实验项目（XCX14096），国家自然科学青年基金（41401260），湖南省自然科学基金（13JJ04068），湖南省科技厅重点项目（2015NK3015），湖南农业大学1515人才基金资助.

摘要: 本文利用榴莲壳和氯化高铁水热法制备具有磁性的榴莲碳，利用XRD、FTIR和SEM对榴莲碳进行结构表征，并研究榴莲碳对水体中四环素的吸附性能，以及水热反应温度、溶液pH和盐浓度等对榴莲碳吸附去除四环素性能的影响.结果表明，在水热温度170℃加热10 h条件下制备的榴莲碳D170具有明显的纳米片状和颗粒状结构，随着温度的升高，制备的榴莲碳XRD衍射峰增强，形成的结晶更好.吸附实验表明，随着水热制备温度的升高，制备的榴莲碳对四环素的吸附去除率呈降低趋势.榴莲碳对四环素的吸附热力学模型拟合表明：D170、D180和D200对水体中四环素的最大吸附容量分别为153.97 mg·g-1、80.26 mg·g-1和34.14 mg·g-1，其中D170对四环素的吸附效果最好，最佳吸附溶液pH值约为6.0，吸附热力学过程符合Freundich模型，吸附动力学过程符合假二级动力学模型.溶液中添加NaCl能促进榴莲碳对四环素的吸附作用，当NaCl浓度高于0.1 mol·L-1，榴莲碳对四环素的去除率达到100%；而添加Ca（NO3）2可降低榴莲碳对四环素的吸附能力，当Ca（NO3）2浓度从0.1 mol·L-1增加到1.0 mol·L-1时，水溶液中四环素的去除率从93%降低到78%.

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