Fixed Bed Adsorption of Ethylenediamine-grafted Silica Gel on Copper Ions
[1]Fan Zhonglei,Cha Huiping,Wang Linghui.Fixed Bed Adsorption of Ethylenediamine-grafted Silica Gel on Copper Ions[J].Journal of Zhengzhou University (Engineering Science),2014,35(01):68-72.[doi:10.3969/j.issn.1671-6833.2014.01.016]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35
Number of periods:
2014 01
Page number:
68-72
Column:
Public date:
2014-02-28
- Title:
- Fixed Bed Adsorption of Ethylenediamine-grafted Silica Gel on Copper Ions
- CLC:
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- Abstract:
- The ethylenediamine silica gel material (EDA/SiO2) with an amine group content of 1.35 mmol/g was synthesized, the effects of solution flow rate, initial concentration, and loading amount on its dynamic adsorption performance were investigated, and the Thomas model parameters and operating conditions of the system were studied. The results show that EDA/SiO2 can effectively remove copper ions in water, and the breakthrough time is shortened with the increase of the initial concentration of the solution and the acceleration of the flow rate. The equilibrium adsorption capacity q0 has a significant impact, and the flow Q has a significant impact on kTh. The model parameter q0 has a linear relationship with C0/m through the specific strength of the ion adsorbent, and the equation is: q0=0.023 4C0/m+ 0.257. The correlation equation can Describe the relationship between the adsorption operating conditions and the breakthrough curve, and provide a certain experimental basis for the application of this material.
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