Removal Efficiency of Lead (II) by A Biopolymer Poly-γ-Glutamic Acid

被引：1

作者：

Mu, Ruimin ^{[1
]}

Ma, Guixia ^{[1
]}

Zhao, Xia ^{[1
]}

机构：

[1] Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Peoples R China

来源：

ADVANCES IN STRUCTURAL ENGINEERING, PTS 1-3 | 2011年 / 94-96卷

基金：

中国国家自然科学基金;

关键词：

Poly-gamma-glutamic acid; lead(II); removal efficiency; POLY(GAMMA-GLUTAMIC ACID);

D O I：

10.4028/www.scientific.net/AMM.94-96.995

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Lead(II) is a typical industrial pollutant which is harmful to people's health. In this study, a new environmental-friendly material, the edible biopolymer poly-gamma-glutamic acid (gamma-PGA) was applied to adsorb lead(II). The results revealed that gamma-PGA had pronounced binding effects on lead(II) and its metal adsorption capacity was affected by lead(II) concentration, gamma-PGA dose and pH of the solution. For lead(II) concentration, the removal rate of lead(II) increased with the decrease of the metal concentration. For gamma-PGA dose, the removal rate of lead(II) increased with the increase of gamma-PGA dose until the turning point at 4000 mg/L and then the tendency was adverse. The maximum removal rate was 92.8 % when lead(II) and gamma-PGA concentration was 1000 mg/L and 4000 mg/L separately. For pH, the metal adsorption capacity was weak when pH<4 and the optimal result occurred at pH 5-6.

引用

页码：995 / +

页数：2

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