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Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用

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赵保卫, 石夏颖, 马锋锋. Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用[J]. 环境化学, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
引用本文: 赵保卫, 石夏颖, 马锋锋. Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用[J]. 环境化学, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
shu
ZHAO Baowei, SHI Xiaying, MA Fengfeng. Interacion between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars derived from flax and rape biomasses[J]. Environmental Chemistry, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
Citation: ZHAO Baowei, SHI Xiaying, MA Fengfeng. Interacion between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars derived from flax and rape biomasses[J]. Environmental Chemistry, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
shu

Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用

  • 1.

    兰州交通大学环境与市政工程学院, 兰州, 730070

  • 基金项目:

    国家自然科学基金(21167007,21467013)和高等学校博士学科点专项科研基金(20136204110003)资助.

Interacion between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars derived from flax and rape biomasses

  • 1.

    School of Environmental and Municipal Engineering, Lanzhou Jiaotong Univeristy, Lanzhou, 730070, China

  • Fund Project: Sponsored by the National Natural Science Foundation of China(21167007,21467013)and Specialized Research Fund for the Doctoral Program of Higher Education of China(20136204110003).

  • 摘要: 以胡麻、油菜的秸秆和油渣热解制得的4种生物炭为吸附剂,以批平衡吸附实验研究了Cr(Ⅵ)-Cu(Ⅱ)混合溶液体系中两种金属的吸附作用,考察吸附时间和初始金属浓度对吸附作用的影响,并与单一吸附体系对比,分析了可能的交互作用机制.发现混合体系中生物炭对Cr(Ⅵ)和Cu(Ⅱ)的吸附动力学和热力学规律与单一金属体系下相似,但生物炭对Cr(Ⅵ)的吸附量较单一Cr(Ⅵ)体系略有增加但不显著,而Cu(Ⅱ)的吸附量较单一Cu(Ⅱ)体系明显增大.表明两种金属在4种生物炭上的吸附存在交互作用,为协同吸附作用.交互作用的主要机制是两种金属离子间正负电荷的静电引力作用.
    Abstract: Bioachars derived from flax(Linum usitatissimum L.) and rape(Brassica campestris L.) biomasses(flax straw, rape straw, flax seed tailing and rape seed tailing) were used to adsorb Cr(Ⅵ) and Cu(Ⅱ) simultaneously from the mixed Cr(Ⅵ)-Cu(Ⅱ) solutions by batch equilibrium method. The effects of contact time and initial metal concentration on the adsorption capacities of Cr(Ⅵ) and Cu(Ⅱ) were tested. The mechanisms for the interaction between Cr(Ⅵ) and Cu(Ⅱ) adsorption were discussed. Compared with the single metal system, similar patterns of kinetic and thermodynamic adsorption processes were observed, but the adsorption capacity of Cr(Ⅵ) was slightly enhanced while that of Cu(Ⅱ) was significantly improved, which indicates that synergistic interactions between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars occurred. The main mechanism is the electrostatic attraction between two metal species during the adsorption process.
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  • 收稿日期:  2015-08-20
  • 刊出日期:  2016-02-15
赵保卫, 石夏颖, 马锋锋. Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用[J]. 环境化学, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
引用本文: 赵保卫, 石夏颖, 马锋锋. Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用[J]. 环境化学, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
shu
ZHAO Baowei, SHI Xiaying, MA Fengfeng. Interacion between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars derived from flax and rape biomasses[J]. Environmental Chemistry, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
Citation: ZHAO Baowei, SHI Xiaying, MA Fengfeng. Interacion between Cr(Ⅵ) and Cu(Ⅱ) adsorption onto biochars derived from flax and rape biomasses[J]. Environmental Chemistry, 2016, 35(2): 323-329. doi: 10.7524/j.issn.0254-6108.2016.02.2015082003
shu

Cr(Ⅵ)和Cu(Ⅱ)在胡麻和油菜生物质炭上吸附的交互作用

  • 1. 兰州交通大学环境与市政工程学院, 兰州, 730070
  • 收稿日期:  2015-08-20
基金项目:

国家自然科学基金(21167007,21467013)和高等学校博士学科点专项科研基金(20136204110003)资助.

摘要: 以胡麻、油菜的秸秆和油渣热解制得的4种生物炭为吸附剂,以批平衡吸附实验研究了Cr(Ⅵ)-Cu(Ⅱ)混合溶液体系中两种金属的吸附作用,考察吸附时间和初始金属浓度对吸附作用的影响,并与单一吸附体系对比,分析了可能的交互作用机制.发现混合体系中生物炭对Cr(Ⅵ)和Cu(Ⅱ)的吸附动力学和热力学规律与单一金属体系下相似,但生物炭对Cr(Ⅵ)的吸附量较单一Cr(Ⅵ)体系略有增加但不显著,而Cu(Ⅱ)的吸附量较单一Cu(Ⅱ)体系明显增大.表明两种金属在4种生物炭上的吸附存在交互作用,为协同吸附作用.交互作用的主要机制是两种金属离子间正负电荷的静电引力作用.

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