Adsorption Equilibrium and Kinetics of Lead Ion onto Synthetic Ferrihydrites

被引：0

作者：

Shi Zhongliang ^{[1
]}

Zou Peichen ^{[1
]}

Guo Man ^{[1
]}

Yao Shuhua ^{[1
]}

机构：

[1] Shenyang Univ Chem Technol, Sch Appl Chem, Shenyang 110142, Peoples R China

来源：

IRANIAN JOURNAL OF CHEMISTRY & CHEMICAL ENGINEERING-INTERNATIONAL ENGLISH EDITION | 2015年 / 34卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Ferrihydrite; Adsorption equilibrium; Kinetics; Lead ion; AQUEOUS-SOLUTION; HEAVY-METALS; REMOVAL; DESORPTION; SORPTION; CADMIUM; CARBON; NICKEL(II); MECHANISMS; ADSORBENT;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Batch experiments were conducted to study the adsorption behaviors of lead ion (Pb2+) onto ferrihydrites prepared using three different procedures which were characterized by textural analysis (BET). The adsorption removal of Pb2+ by the three ferrihydrites (called FH-1, FH-2 and FH-3, respectively) were compared, and FH-3 shows fast adsorption kinetics as well as high adsorption capacities, the adsorption properties of the three ferrihydrites for lead ion depend on the pH value and the optimal pH for Pb2+ adsorption of FH-3 is 6.0. The maximum adsorption capacity of lead ion on FH-3 is 13.75 mg/g and the adsorption isotherms followed Langmuir isotherm model better than the Freundlich isotherm model. The adsorption kinetic data could be described well by pseudo-second-order kinetic equation.

引用

页码：25 / 32

页数：8

共 31 条

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