Segregation behavior of magnetic ions in continuous flowing solution under gradient magnetic field

doi:10.1088/1674-1056/25/7/074704

Abstract The research of magnetic separation starts from magnetic solid particles to nanoparticles, and in the research progress, particles become smaller gradually with the development of application of magnetic separation technology. Nevertheless, little experimental study of magnetic separation of molecules and ions under continuous flowing conditions has been reported. In this work, we designed a magnetic device and a “layered” flow channel to study the magnetic separation at the ionic level in continuous flowing solution. A segregation model was built to discuss the segregation behavior as well as the factors that may affect the separation. The magnetic force was proved to be the driving force which plays an indispensable role leading to the segregation and separation. The flow velocity has an effect on the segregation behavior of magnetic ions, which determines the separation result. On the other hand, the optimum flow velocity which makes maximum separation is related to the initial concentration of solution.

Keywords: magnetic ions magnetic separation segregation enrichment

Received: 18 November 2015
Revised: 02 February 2016
Accepted manuscript online:

PACS:	47.65.Cb	(Magnetic fluids and ferrofluids)
	47.15.Rq	(Laminar flows in cavities, channels, ducts, and conduits)
	83.60.Np	(Effects of electric and magnetic fields)
	83.85.-c	(Techniques and apparatus)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51276016).

Corresponding Authors: Ping Wu
E-mail: pingwu@sas.ustb.edu.cn

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Bing Ji(冀冰), Ping Wu(吴平), Han Ren(任菡), Shiping Zhang(张师平), Abdul Rehman, Li Wang(王立) Segregation behavior of magnetic ions in continuous flowing solution under gradient magnetic field 2016 Chin. Phys. B 25 074704

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Segregation behavior of magnetic ions in continuous flowing solution under gradient magnetic field

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