Study on Congo Red Adsorption with Ethylenediamine Modified Sawdust
[1]ZoU Wei-hua,LI Ke,GAO Shuai-peng,et al.Study on Congo Red Adsorption with Ethylenediamine Modified Sawdust[J].Journal of Zhengzhou University (Engineering Science),2013,34(02):28-31,36.[doi:10.3969/j.issn.1671-6833.2013.02.008]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 02
Page number:
28-31,36
Column:
Public date:
2013-03-28
- Title:
- Study on Congo Red Adsorption with Ethylenediamine Modified Sawdust
- Keywords:
- ethylenediamine; sawdust; congo red; adsorption; kinetic study ; regeneration
- CLC:
- X703
- Abstract:
- The potential feasibility of ethylenediamine modified sawdust as the adsorbent for removal of anionicdye of congo red from aqueous solution was investigated. The experiments were carried out as function of pH,salt concentration,temperature,initial concentration and contact time. The results show that the sawdust mod-ified with ethylenediamine made the adsorption capacity of congo red increase. By functionalizing,the adsorp-tion capacity (q.) of sawdust for congo red was increased from 6.99 to 14.77 mg/g at 298 K. The equilibri-um data agreed well with the Freundlich model.The pseudo-second order and the intra-particle diffusion mod-el were used for discussing the kinetics and mechanism of adsorption of congo red.The adsorption of congo redcan be devided into two phases: membrane diffusion and particle internal diffusion.The best desorption meth-od for saturated sawdust was NaOH.
- References:
- -
- Similar References:
Memo
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Last Update:
1900-01-01
