期刊
CARBOHYDRATE POLYMERS
卷 101, 期 -, 页码 574-581出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.09.093
关键词
Peach gum; Adsorption; Dye; Methylene blue; Methyl violet
资金
- National Natural Science Foundation of China [51103028, 21364003]
- Guangxi Natural Science Foundation [2012GXNSFBA053152]
- Foundation Guangxi Funds for Specially-appointed Expert and Guangxi Small Highland Innovation Team of Talents in Colleges and Universities [KH2012YB006]
This study investigated the potential use of natural peach gum (PG) as alternative adsorbent for the removal of dyes from aqueous solutions. The PG showed high adsorption capacities and selectivity for cationic dyes (e.g., methylene blue (MB) and methyl violet (MV)) in the pH range 6-10. 98% of MB and MV could be adsorbed within 5 min, and both of the adsorptions reached equilibrium within 30 min. The dye uptake process followed the pseudo-second-order kinetic model. The intraparticle diffusion was not the sole rate controlling step. Equilibrium adsorption isotherm data indicated a good fit to the Langmuir isotherm model. Regeneration study revealed that PG could be well regenerated in acid solution. The recovered PG still exhibited high adsorption capacity even after five cycles of desorption-adsorption. On the basis of its excellent adsorption performance and facile availability, PG can be employed as an efficient low cost adsorbent for environmental cleanup. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据