Adsorption Behavior of Basic Dye from Aqueous Solution onto Alkali Extracted Lignin

被引：1
|
作者：
Feng, Qinghua [1 ]
Cheng, Heli [1 ]
Li, Jinling [1 ]
Wang, Peng [1 ]
Xie, Yimin [1 ]
机构：
[1] Hubei Univ Technol, Hubei Prov Key Lab Green Mat Light Ind, Wuhan 430068, Peoples R China
来源：
BIORESOURCES | 2014年 / 9卷 / 02期
关键词：
Adsorption behavior; Alkali extracted lignin; Methylene blue; METHYLENE-BLUE DYE; ACTIVATED CARBON; REMOVAL; EQUILIBRIUM; KINETICS; SORPTION; BIOSORPTION; MECHANISM; CHITOSAN; ORANGE;
D O I：
暂无
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
Alkali extracted lignin (AEL), isolated from corn stalks with dilute alkali solution under mild condition, was used as a low-cost adsorbent for the removal of methylene blue (MB) from aqueous solutions. Batch adsorption studies were conducted to evaluate various experimental parameters such as pH, contact time, and initial dye concentration for the removal of MB. The kinetic data were analyzed using pseudo-first-order and pseudo-second-order kinetic models, and the adsorption kinetics were found to be well represented by the pseudo-second-order kinetic model. The equilibrium data were perfectly fitted to the Langmuir isotherm equation when compared with Freundlich isotherm equation. Based on the Langmuir adsorption isotherm model, the predicted maximum monolayer adsorption capacity was found to be 121.20 mg g(-1) (at 30 degrees C). The results showed that this adsorbent had a high adsorption capacity, making it a promising alternative for dye removal.
引用
收藏
页码：3602 / 3612
页数：11
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