Publication Year:
Author(s): David L. Hutchins, Jerome P. Downey
Abstract
Within the field of wastewater treatment, nano-adsorbents are a significant emerging technology; however, separation of the nano-scale particles after loading has proved to be an impediment to widespread industrial implementation. Magnetic collection of nanoparticles is a potential strategy for effective separation. Nano-scale magnetite is an effective adsorbent, is sufficiently magnetically susceptible, and is superparamagnetic, allowing re-dispersion following magnetic collection.
In this work, an in-line, water-cooled magnetic collection module was developed with collection efficiencies regularly exceeding 98%. Models were developed over various flow regimes. The role of cooperative magnetophoresis was demonstrated and a physical model has been proposed for adsorption upon particle agglomerations about magnetic core wires.
Citation
Hutchins, D. L., & Downey, J. P. (2019). Effective separation of magnetite nanoparticles within an industrial-scale pipeline reactor. Separation Science and Technology, 55(15), 2822–2829. https://doi.org/10.1080/01496395.2019.1646762