The use of magnetic separation based on nanoparticles has been an efficient approach in many research fields and different industries. It has shown multiple advantages including high separation efficiency and fast separation speed as well as low cost, comparing to conventional sedimentation or centrifugation methods. The basic contents and modelling principles such as one-way and two-way coupling methods involving magnetic separation have been introduced specifically and comprehensively, which can be used for better understanding the process and optimizing design of magnetic separators. Then typical industry applications of magnetic separation including kaolin beneficiation, water treatment, protein purification, cell separation, and drug delivery have been summarized in detail.
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