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牛粪生物炭对紫色土吸附-解吸腐殖酸的影响

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黄惠群, 蔡文昌, 张健瑜, 李灿, 曾和平. 牛粪生物炭对紫色土吸附-解吸腐殖酸的影响[J]. 环境化学, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
引用本文: 黄惠群, 蔡文昌, 张健瑜, 李灿, 曾和平. 牛粪生物炭对紫色土吸附-解吸腐殖酸的影响[J]. 环境化学, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
shu
HUANG Huiqun, CAI Wenchang, ZANG Jianyu, LI Can, ZENG Heping. Effects of dairy manure biochar on the adsorption-desorption of humic acid onto purple soil[J]. Environmental Chemistry, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
Citation: HUANG Huiqun, CAI Wenchang, ZANG Jianyu, LI Can, ZENG Heping. Effects of dairy manure biochar on the adsorption-desorption of humic acid onto purple soil[J]. Environmental Chemistry, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
shu

牛粪生物炭对紫色土吸附-解吸腐殖酸的影响

  • 1.

    昆明理工大学环境科学与工程学院, 昆明, 650500

  • 基金项目:

    国家自然科学基金（41461061）资助.

Effects of dairy manure biochar on the adsorption-desorption of humic acid onto purple soil

  • 1.

    College of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China

  • Fund Project: Supported by the National Natural Science Foundation of China(41461061).

  • 摘要: 通过探讨牛粪生物炭对紫色土吸附-解吸腐殖酸的影响，以减少紫色土腐殖酸的流失、提高腐殖酸利用率，为提高龙川江流域紫色土肥力提供理论依据.采用土培实验，用Langmuir和Freundlich模型、Lagergren准一级和Lagergren准二级动力学方程，研究了不同添加比例牛粪生物炭（BC、CK、1%、3%、5%）对腐殖酸的吸附与解吸的影响.采用扫描电镜、BET等方法分析牛粪生物炭的表面结构以及比表面积，来探讨牛粪生物炭对紫色土吸附和解吸HA的影响机理.结果表明，牛粪生物炭对紫色土等温吸附HA过程符合Langmuir模型，动力学模型符合Lagergren准二级动力学方程；各处理对紫色土等温吸附-解吸HA过程有明显的影响，CK对HA的吸附量和吸附率最低，解吸率最高；5%对HA的吸附量、吸附率和解吸量最高.同时，各处理对紫色土吸附-解吸HA动力学也有明显的影响，在前12 h，吸附速率逐渐增加，随后吸附逐渐达到平衡，吸附过程以化学吸附为主.各处理方法相比，5%更有利于吸附HA，防止HA流失.
    Abstract: In order to reduce the loss of humic acid onto purple soil and improve the utilization rate of humic acid, it provided a theoretical basis for improving the fertility of purple soil in Longchuan River Basin by studying the effect of dairy manner biochar on adsorption and desorption of humic acid onto purple soil. Using soil cultivation experiment, the different ratios of dairy manure biochars(BC, CK, 1%, 3%, 5%) were used to study the effects of humic acid adsorption and desorption by Langmuir and Freundlich model, Lagergren pseudo-first-order and Lagergren pseudo-second-order kinetic equation. The surface structure and specific surface area of dairy manure biochar were analyzed by scanning electron microscope (SEM) and BET to explore the mechanism that the effects of dairy manure biochar on the adsorption-desorption of HA onto purple soil. The results indicated that the dairy manner biochar on the purple soil isothermal adsorption of HA was in accordance with Langmuir model, and the kinetics model was in accordance with Lagergren pseudo-second-order kinetic equation.There were obvious influences in the process of isothermal adsorption and desorption HA of purple soil under various processing conditions. Under the CK, the adsorption capacity and the adsorption rate of HA was the lowest, but the desorption rate of HA was the highest. Under the 5%, the adsorption capacity, the adsorption rate and the desorption capacity of HA was the highest. At the same time, there were obvious influences in the process of adsorption and desorption kinetics HA of purple soil under various processing conditions, the adsorption ratio gradually increased before 12 h, and then tend to balance. It is mainly owing to chemical adsorption during the whole processing. Compared with each treatment method, 5% was favorable for adsorbing HA and preventing the loss of HA.
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  • 收稿日期:  2017-08-25
  • 刊出日期:  2018-05-15
黄惠群, 蔡文昌, 张健瑜, 李灿, 曾和平. 牛粪生物炭对紫色土吸附-解吸腐殖酸的影响[J]. 环境化学, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
引用本文: 黄惠群, 蔡文昌, 张健瑜, 李灿, 曾和平. 牛粪生物炭对紫色土吸附-解吸腐殖酸的影响[J]. 环境化学, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
shu
HUANG Huiqun, CAI Wenchang, ZANG Jianyu, LI Can, ZENG Heping. Effects of dairy manure biochar on the adsorption-desorption of humic acid onto purple soil[J]. Environmental Chemistry, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
Citation: HUANG Huiqun, CAI Wenchang, ZANG Jianyu, LI Can, ZENG Heping. Effects of dairy manure biochar on the adsorption-desorption of humic acid onto purple soil[J]. Environmental Chemistry, 2018, 37(5): 1099-1109. doi: 10.7524/j.issn.0254-6108.2017082502
shu

牛粪生物炭对紫色土吸附-解吸腐殖酸的影响

  • 1. 昆明理工大学环境科学与工程学院, 昆明, 650500
  • 收稿日期:  2017-08-25
基金项目:

国家自然科学基金（41461061）资助.

摘要: 通过探讨牛粪生物炭对紫色土吸附-解吸腐殖酸的影响，以减少紫色土腐殖酸的流失、提高腐殖酸利用率，为提高龙川江流域紫色土肥力提供理论依据.采用土培实验，用Langmuir和Freundlich模型、Lagergren准一级和Lagergren准二级动力学方程，研究了不同添加比例牛粪生物炭（BC、CK、1%、3%、5%）对腐殖酸的吸附与解吸的影响.采用扫描电镜、BET等方法分析牛粪生物炭的表面结构以及比表面积，来探讨牛粪生物炭对紫色土吸附和解吸HA的影响机理.结果表明，牛粪生物炭对紫色土等温吸附HA过程符合Langmuir模型，动力学模型符合Lagergren准二级动力学方程；各处理对紫色土等温吸附-解吸HA过程有明显的影响，CK对HA的吸附量和吸附率最低，解吸率最高；5%对HA的吸附量、吸附率和解吸量最高.同时，各处理对紫色土吸附-解吸HA动力学也有明显的影响，在前12 h，吸附速率逐渐增加，随后吸附逐渐达到平衡，吸附过程以化学吸附为主.各处理方法相比，5%更有利于吸附HA，防止HA流失.

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