| 改性玉米秸秆对Cu2+吸附性能研究 |
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| 引用本文： | 张华丽,齐若男,谢嵬旭,汪树生.改性玉米秸秆对Cu2+吸附性能研究[J].工业水处理,2020(2):71-74. |
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| 作者姓名： | 张华丽 齐若男 谢嵬旭 汪树生 |
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| 作者单位： | 吉林农业大学生命科学学院 |
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| 基金项目： | 吉林省教育厅基金项目(吉教科合字[2016]第181号);吉林省科技厅自然基金课题(20170101108JC) |
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| 摘 要： | 研究了NaOH、HNO3改性玉米秸秆对水中Cu^2+的吸附性能及吸附特性。研究表明,改性后的秸秆表面光滑,结晶指数高,对Cu^2+的吸附容量增大。相比未改性玉米秸秆和酸改性玉米秸秆,碱改性玉米秸秆对Cu^2+的吸附效果最好。碱改性玉米秸秆对Cu^2+的吸附能较好地符合Freundlich方程和伪二级动力学模型。初步推断吸附机理是秸秆表面官能团与Cu^2+络合形成复合体的化学吸附过程。
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| 关 键 词： | 玉米秸秆 改性 吸附 CU^2+ |
Study on adsorption of Cu2+ by modified corn straw |
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| Zhang Huali,Qi Ruonan,Xie Weixu,Wang Shusheng.Study on adsorption of Cu2+ by modified corn straw[J].Industrial Water Treatment,2020(2):71-74. |
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| Authors: | Zhang Huali Qi Ruonan Xie Weixu Wang Shusheng |
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| Affiliation: | (College of Life Sciences,Jilin Agricultural University,Changchun 130118,China) |
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| Abstract: | The adsorption performance and its characteristics of NaOH and HNO3 modified corn straws on Cu^2+in water were studied.The research showed that the surface of the modified straws was smooth,the crystalline index was high,and the adsorption capacity on Cu^2+was increased.Alkali-modified corn straw had the best adsorption performance on Cu^2+,compared with unmodified corn straw and acid-modified corn straw.The adsorption on Cu^2+by alkalimodified corn straw was in good agreements with the Freundlich equation and the pseudo-second-order kinetic model.It was preliminarily inferred that the adsorption mechanism was the chemical adsorption process,in which the surface functional groups of the straw were chelated with Cu^2+to form complexes. |
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| Keywords: | corn straw modification adsorption Cu^2+ |
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