Magnetic Separation of Organic Dyes in Wastewater Using Superconducting Bulk Magnets

Noriyo Kondo; Kazuya Yokoyama; Sumio Hosaka

doi:10.4028/www.scientific.net/KEM.534.99

Paper Titles

Effect of Metal Modification to Carbon Paper Anodes on the Performance of Yeast-Based Microbial Fuel Cells Part Ι: In the Case without Exogenous Mediator
p.76

Effect of Metal Modification to Carbon Paper Anodes on the Performance of Yeast-Based Microbial Fuel Cells Part ΙΙ: In the Case with Exogenous Mediator, Methylene Blue
p.82

Development of Particle Packed Bed Type Chromatography Using Dielectrophoresis
p.88

Analysis of Electrical Property of the Animal Cell Using Dielectrophoresis Levitation
p.93

Magnetic Separation of Organic Dyes in Wastewater Using Superconducting Bulk Magnets
p.99

Comparison of Nanosized Pattern of Calixarene and ZEP520 Resists by Using Energy Deposition Distribution
p.107

Effect of Salty Development on Forming HSQ Resist Nanodot Arrays with a Pitch of 15×15 nm² by 30-keV Electron Beam Lithography
p.113

Fabrication of 30-nm-Pitched CoPt Magnetic Dot Arrays Using 30-keV-Electron Beam Lithography and Ion Milling for Patterned Media
p.118

Measurement of Coercive Force Enhanced by Nanometer-Sizing of Magnetic Dot by X-Ray Magnetic Circular Dichroism (XMCD)
p.122

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Magnetic Separation of Organic Dyes in Wastewater Using Superconducting Bulk Magnets

Abstract:

We propose a magnetic separation system using superconducting bulk magnets to effectively separate organic dyes in wastewater. Two key technologies are applied in this system: magnetic seeding and magnetic separation. Magnetic activated carbons (MACs) are used to adsorb organic dyes Orange II and Crystal violet, which serve as magnetic seeds. We set up a magnetic separator by placing an acrylic pipe between the magnetic poles of a face-to-face superconducting bulk magnet for high gradient magnetic separation (HGMS) with the use of a stainless steel filter, composed of ferromagnetic wire stuffed into acrylic pipe. The experimental results show that the adsorption ratios of 99% and the separation ratios of over 97% were achieved at low flow rate for the organic dyes.