文献类型：期刊文献

英文题名：Lead and copper removal from aqueous solutions by porous glass derived calcium hydroxyapatite

作者：Liang, Wen[1];Zhan, Lei[1];Piao, Longhua[1];Ruessel, Christian[2]

机构：[1]E China Univ Sci & Technol, Res Inst Biomat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Univ Jena, Otto Schott Inst, Jena, Germany

年份：2011

卷号：176

期号：13

起止页码：1010

外文期刊名：MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

收录：;EI(收录号：20112914151065);WOS:【SCI-EXPANDED(收录号:WOS:000293991100009)】；

基金：The authors gratefully acknowledge the financial support of National Nature Science Foundation of China (Project for Young Scientists Fund No. 50902048) and Program for Changjiang Scholars and Innovative Research Team in University (IRT0825). The authors wish to acknowledge the valuable discussion with Prof. D E Day in the Materials Research Center, University of Missouri-Rolla, who had the idea of using glass derived calcium hydroxyapatite in waste water treatment.

语种：英文

外文关键词：Adsorption; Glass derived calcium hydroxyapatite; Lead; Copper

摘要：A porous glass was prepared by sintering Na2O-CaO-B2O3 glass powder with powdered sodium chloride. Subsequently, the sodium chloride was dissolved in water resulting in a highly porous material. A sample was prepared consisting of 60 vol% glass and 40 vol% salt which both had particle sizes <100 and 400-500 mu m, respectively. The sample was sintered at a temperature of 580 degrees C for 15 min which resulted in an optimum structure with 57.5% porosity and 0.944 MPa compressive strength. Amorphous calcium hydroxyapatite was formed by immersing these materials in 0.1 M K-2 HPO4 solutions at room temperature for 1 day. The porous glass derived hydroxyapatite matrix was then processed for removing lead and copper ions from aqueous solutions. The results showed that the glass derived calcium hydroxyapatite matrix effectively immobilizes lead and copper ions in solution. The adsorption mechanism was investigated by the X-ray Diffraction (XRD) and Scanning Electron Microscopy including Energy Dispersive X-Ray Spectrometry (SEM-EDX). (C) 2011 Elsevier B.V. All rights reserved.