Packed bed column investigation on As(V) adsorption using magnetic iron oxide/bagasse biomass carbon composite adsorbent

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Xu, Shuiping^1 ; Liang, Meina^1^2^3 ; Zhang, Lihao^1^2^3 ; Tang, Shen^1^2^3 ; Zhu, Zongqiang^1^2^3 ; Zhu, Lin^1

College of Environmental Science and Engineering, Guilin University of Technology, Guilin

541004, China^1

Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin

541004, China^2

Guangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin

541004, China^3

关键词: Break through curve;    Carbon composites;    Exhaustion time;    High adsorption capacity;    Magnetic iron oxides;    Packed bed column;    Solution flow rate;    Solution pH;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/3/032032/pdf
DOI  :  10.1088/1757-899X/490/3/032032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this study, the magnetic iron oxide/bagasse biomass carbon composite adsorbent(M-Fe3O4-BC) was achieved by the microwave precipitation one-step carbonization heating chemical modification method with bagasse as the main raw material. The effects of initial As(V) concentration, solution pH, solution flow rate and bed height on the breakthrough curve of M-Fe3O4-BC adsorption As(V) were studied. The results shown that the penetration time was shortened with growing initial As(V) concentration, solution pH and solution flow rate, and it lengthened with growing bed height. The exhaustion time was prolonged with increasing initial As(V) concentration and height of bed, and the influence of solution pH on the exhaustion time was not significant. When the solution flow rate is lower than 1.5 ml/min, the exhaustion point was not reached within 2000 min, and the exhaustion time was 720 min when the solution flow rate was 2.0 ml/min. The regenerated adsorbent still maintained a high adsorption capacity for As(V).