Biosorption of Cu2+ and Pb2+ using sophora alopecuroides residue

International Conference on Water Resource and Environment 2016

地球科学;生态环境科学

Feng, N.^1 ; Fan, W.^1 ; Zhu, M.^1 ; Zhang, Y.^1

School of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia, China^1

关键词: Batch techniques;    Biosorption capacity;    Langmuir isotherm models;    Porous structures;    Second order kinetics;    Simulated wastewater;    Surface textures;    Traditional Chinese herbal medicine;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/39/1/012019/pdf
DOI  :  10.1088/1755-1315/39/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Sophora alopecuroides residue (SAP), a kind of traditional Chinese herbal medicine residue, was developed in an alternative biosorbent for the removal Cu2+and Pb2+in simulated wastewater. The morphology and surface texture of SAP were characterized by scanning electron microscopy, which showed a loose and porous structure. The biosorption experiments of Cu2+and Pb2+onto SAP were investigated by using batch techniques. High biosorption percentage appeared at pH values of 4.5-6.0. The experimental data followed the second-order kinetic model well. Equilibrium fit with the Langmuir isotherm model well. The maximum biosorption capacity of an adsorbent at 25 °C was respectively 60.6 mg/g Cu2+and 128.1 mg/g Pb2+. The findings of the present study show that SAP is an attractive and effective biosorbent for Cu2+and Pb2+.