Adsorbing Properties of Magnetic Nanoparticles Mn-Ferrites on Removal of Congo Red from Aqueous Solution

被引：29
作者：
Liu, Xueyan [1 ]
Zhang, Zhenzhen [1 ]
Shi, Wen [1 ]
Zhang, Yunyu [1 ]
An, Shuai [2 ]
Zhang, Lei [1 ]
机构：
[1] Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China
[2] Shenyang Geol Survey Ctr, Shenyang, Peoples R China
来源：
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2015年 / 36卷 / 04期
关键词：
Adsorption; Congo red; magnetic nanoparticles; Mn-ferrites; METHYLENE-BLUE; WASTE-WATER; ADSORPTION; DYES; EQUILIBRIUM; PERFORMANCE; SEPIOLITE; ISOTHERM; ORANGE; CARBON;
D O I：
10.1080/01932691.2014.896745
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, the removal of Congo red (CR) from aqueous solution was investigated using magnetic nanoparticles Mn-ferrites (MnFe2O4). The results indicated that the removal percentages of CR could reach up to 99% within 10.0 minutes under pH 4-9. The formation of hydrogen bond was the main adsorption mechanism. Sorption kinetics data was found to follow the pseudo-second-order model. The overall rate process was mainly controlled by external mass transfer. The sorption behavior could be well interpreted by the Langmuir model with the maximum adsorption capacity of 41.99 mg g(-1) at 298 K. Thermodynamic data indicated a spontaneous and endothermic process.
引用
收藏
页码：462 / 470
页数：9
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