Preparation and characterization of MnO2-impregnated granular activated carbon for Reactive Black 5 removal

被引：2
|
作者：
Zhao, Jianhai [1 ]
Liu, Tingting [1 ]
Shi, Huanhuan [1 ]
Zhang, Jiayi [1 ]
Li, Haiyan [2 ]
Ge, Wenqi [3 ]
Chi, Yongzhi [1 ]
机构：
[1] Tianjin Chengjian Univ, Sch Environm & Municipal Engn, Tianjin Key Lab Aquat Sci & Technol, Tianjin 300384, Peoples R China
[2] Beijing Univ Civil Engn & Architecture, Beijing Engn Res Ctr Sustainable Urban Sewage Sys, Beijing, Peoples R China
[3] Tianjin Chengjian Univ, Sch Control & Mech Engn, Tianjin, Peoples R China
来源：
DESALINATION AND WATER TREATMENT | 2019年 / 171卷
关键词：
Granular activated carbon; Manganese dioxide; Reactive Black 5 (RB5); Adsorption; METHYLENE-BLUE; SURFACE-AREA; WASTE-WATER; DYES; ADSORPTION; OXIDE; EQUILIBRIUM; NANOTUBES; DIATOMITE; KINETICS;
D O I：
10.5004/dwt.2019.24782
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Granular activated carbon (GAC) was impregnated with manganese dioxide through an impregnation-precipitation-calcination procedure for removing Reactive Black 5 (RB5) from aqueous solution. The higher Brunauer-Emmett-Teller surface areas (820.25 m(2) g(-1)) and porous structure were obtained for manganese dioxide-GAC. The X-ray diffractometer and scanning electron microscopy analysis revealed that a large amount of manganese dioxide coating on the GAC surface. The optimized manganese dioxide-GAC preparation conditions were Mn(NO3)(2) and Na2CO3 solutions of 0.5 mol L-1, impregnating time of 5 h, calcining time of 3 h and calcining temperature of 360 degrees C. The experimental results indicated that the pseudo-second-order kinetic equation can be used to describe the adsorption of RB5 on manganese dioxide-GAC. The highest removal capacity of RB5 from solution for manganese dioxide-GAC was 4.468 mg g(-1).
引用
收藏
页码：428 / 435
页数：8
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