Synopsis:The objective of this study is to separate dyes in wastewater with high efficiency and speed using high-gradient magnetic separation via a superconducting bulk magnet. Two main technologies are necessary for this magnetic separation: one is a magnetic-seeding technology that provides the substance with ferromagnetism, and the other is a magnetic-separation technology that uses a superconducting magnet and magnetic filters. In order to separate the organic dyes, it is necessary to clarify the mechanism of magnetic seeding, and to design a suitable magnetic-seeding method for each kind of dye. Six kinds of dyes widely used in industry were used to investigate the possibility of magnetic seeding, and the interaction mechanism between the dyes and ferromagnetic particles. The results show that electrostatic interaction was one of the main interactions between the organic dyes and ferromagnetic particles. Based on the results, the possibility of practical application of the continuous magnetic separation systems was examined in a model experiment using a superconducting bulk magnet.
To separate oil contents from industrial and domestic wastewater with for the purpose of water purification and recyclying, magnetic separation of simulated emulsion wastewater was performed. Magnetic separation technology is roughly divided into magnetic seeding and magnetic separation. First, we confirmed the possibility of magnetically seeding emulsion using a flocculation method with polymer additives. For practical separation, we performed a separation experiment and particle trajectory simulation in a model system using a bulk superconducting magnet. From the results, we examined the basic conditions for highly effective magnetic separation of emulsions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.