Lead(II) removal from wastewater by water hyacinth

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Yi, Zhengji^1^2 ; Liu, Jian^1^2 ; Liu, Xing^1^2 ; Zeng, Rongying^1^2 ; Cui, Ying^1^2

College of Chemistry and Materials Science, Hengyang Normal University, Hengyang

421008, China^1

Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang

421008, China^2

关键词: Biosorption capacity;    Biosorption isotherms;    Biosorption process;    Environmental problems;    Equilibrium time;    Langmuir models;    Lead concentration;    Pseudo second order kinetics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042015/pdf
DOI  :  10.1088/1755-1315/310/4/042015

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Lead(II) contamination is a serious environmental problem. The purpose of this research is to discuss the feasibility of utilizing dead water hyacinth granule to eliminate lead(II) cations from aqueous solution through batch tests. Effects of contact time, medium acidity-alkalinity, and solution lead concentration on this biosorption process were detailedly studied. The experimental result suggested that the lead(II) biosorption depended highly on the medium pH. A pH of 5.0 was most helpful to lead(II) removal. The biosorption data conformed to pseudo-second-order kinetics and the biosorption equilibrium time was equal to 45 minutes. The biosorption isotherm data could be characterized using Langmuir model accompanied with the maximum biosorption capacity of 75.44 mg/g. Our findings revealed that water hyacinth could be an efficient adsorbent for lead(II) elimination.