Investigation of lead(II) biosorption onto Hydrilla verticillata

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Yi, Zhengji^1^2 ; Yao, Jun^3 ; Liu, Xing^1^2 ; Liu, Jian^1^2 ; Zeng, Rongying^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

School of Water Resource and Environmental Engineering, Sino-Hungarian Joint Laboratory of Environmental Science and Health, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, Beijing

100083, China^3

关键词: Adsorption capacities;    Adsorption data;    Adsorption equilibria;    Batch experiments;    Isotherm data;    Langmuir equation;    Pb adsorptions;    Pseudo first-order kinetics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/2/022020/pdf
DOI  :  10.1088/1755-1315/237/2/022020

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aim of the present research is to study the applicability of using dead Hydrilla verticillata powder to remove lead(II) ion from aqueous solution by means of batch experiments. Influence of oscillation time, solution pH value, and initial Pb(II) level upon its biosorption was examined in some detail. The result indicated that Pb(II) adsorption is highly pH dependent. The pH range from 5.0 to 5.5 is most favorable for Pb(II) removal with ca. 90% of Pb(II) removed. The adsorption data was in agreement with pseudo-first-order kinetics with an adsorption equilibrium time of 50 min. Isotherm data can be described by the Langmuir equation with a maximum adsorption capacity of 157.23 mg/g. These findings suggest that H. verticillata could be a promising biosorbent for Pb(II) removal.