Magnetic removal of phosphate from wastewater using schwertmannite

被引：46

作者：

Eskandarpour, Akbar ^{[1
]}

Sassa, Kensuke

Bando, Yoshiyuki

Okido, Masazumi

Asai, Shigeo

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Mat Phys & Energy Engn, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Sch Engn, Grad Sch Engn, Dept Chem Engn, Nagoya, Aichi 4648603, Japan

来源：

MATERIALS TRANSACTIONS | 2006年 / 47卷 / 07期

关键词：

phosphate removal; magnetic filter; schwertmannite; wastewater; electromagnetic processing of materials;

D O I：

10.2320/matertrans.47.1832

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A magnetic filtration has firstly been applied to the phosphate removal from wastewater by using schwertmannite, which is ferric oxyhydroxide sulfate with high capacity of phosphate adsorption. High efficiency of phosphate removal without using magnetic seeding was obtained at magnetic intensities of around I Testa, which means no necessity to use a superconducting magnet. The kinetics data of phosphate adsorption have been found to be fitted well with a pseudo-second-order model and adsorption equilibrium data have been explained by the Langmuir isotherm. The effect of pH on the phosphate adsorption in this process was characterized by zeta potential measurement. It is proposed that ligand exchange is a dominant mechanism responsible for phosphate adsorption on schwertmannite.

引用

页码：1832 / 1837

页数：6

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