Kinetics and equilibrium studies of the adsorption of methylene blue on Euryale ferox shell-based activated carbon

被引：7

作者：

Zhang, Haiyan ^{[1
]}

Liu, Yangai ^{[1
]}

Wu, Xiaowen ^{[1
]}

Jin, Xiaozhao ^{[1
]}

Zhang, Zhijie ^{[1
]}

Zhao, Hang ^{[1
]}

Liu, Jia ^{[1
]}

Huang, Zhaohui ^{[1
]}

Fang, Minghao ^{[1
]}

Min, Xin ^{[1
]}

机构：

[1] China Univ Geosci Beijing, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, 29 Xueyuan Rd, Beijing 100083, Peoples R China

来源：

MICRO & NANO LETTERS | 2018年 / 13卷 / 04期

基金：

中国国家自然科学基金;

关键词：

organic compounds; activated carbon; adsorption; porous materials; methylene blue; Euryale ferox shell-based activated carbon; physiochemical activation; potassium hydroxide; Langmuir equation; pseudo-second-order equation; thermodynamics parameter; equilibrium state; pore diameter; pore volume; pseudo-first-order equation; temperature; 800; degC; 20; time; 2; h; C; ZINC-CHLORIDE ACTIVATION; BASIC DYE; WASTE-WATER; CHEMICAL ACTIVATION; AQUEOUS-SOLUTION; FIXED-BED; REMOVAL; BAGASSE; SORPTION; SAWDUST;

D O I：

10.1049/mnl.2017.0638

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Euryale ferox shells were used to prepare activated carbon (AC) by physiochemical activation using potassium hydroxide as the activation agent at 800 degrees C for 2 h. The as-prepared AC surface area was 2028 m(2) g(-1), while the average pore diameter and total pore volume were 3.425 nm and 0.98 cm(3) g(-1), respectively. The equilibrium and kinetics for the adsorption of methylene blue (MB) on E. ferox shell-based AC were investigated at 20 degrees C. The equilibrium data for MB adsorption were in agreement with Langmuir equation, and the maximum adsorption value was 617 mg g(-1). Adsorption was denoted by two simplified kinetic models, pseudo-first-order and pseudo-second-order equations, respectively. The MB adsorption was well fitted to the pseudo-second-order model. Thermodynamics parameters were calculated and discussed and the adsorption of MB on E. ferox shell-based AC was exothermic and spontaneous.

引用

页码：552 / 557

页数：6

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