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Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (21): 2175-2180. Previous Articles     Next Articles

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新型低成本吸附剂稻壳对Cu(II)的去除行为研究

范春辉，张颖超，张颖*   

  1. (东北农业大学资源与环境学院 哈尔滨 150030)
  • 投稿日期:2010-02-02 修回日期:2010-04-21 发布日期:2010-07-01
  • 通讯作者: 张颖 E-mail:zhangyhrb@neau.edu.cn
  • 基金资助:

    国家科技支撑计划;黑龙江省自然科学基金

Characteristics of Cu(II) Removal by Low-Cost Novel Adsorbent of Rice Husk

FAN Chun-Hui, ZHANG Ying-Chao, ZHANG Ying   

  1. (College of Resource & Environment, Northeast Agricultural University, Harbin 150030)
  • Received:2010-02-02 Revised:2010-04-21 Published:2010-07-01
  • Supported by:

    ; the Natural Science Foundation of Heilongjiang Province

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Rice husk was used as adsorbent to study Cu(II) removal efficiency from aqueous solution on the basis of adsorption kinetics and isotherm equations, breakthrough curves affected by flow rates and initial pH values were analyzed, surface characteristics of rice husk and Cu(II) removal mechanism was investigated with the help of SEM, FTIR, XRD and XRF. The adsorption process fit pseudo second order kinetics equation and Langmuir isotherm equation with adsorption capacity on Cu(II) 1.6173 mg•g－1. The reaction could happen spontaneously. Environmental factors could affect shapes of breakthrough curves to some extent. Functional groups of OH and SiO-CxHy played an important role for Cu(II) removal, characteristic adsorption band of cellulose was found in XRD spectra, while no wave band of Cu(II) appeared after adsorption. Cu(II) was detected on rice husk after adsorption by XRF, it proved the reaction feasibility.

Key words: rice husk, Cu(II), adsorption kinetics, removal mechanism