Continuous fractionation of fine particles using magnetically controlled countercurrent chromatography Part II: Extension of the processable material classes as well as scaling and optimization of the multidimensional separation process.

• Applicant: Professor Dr.-Ing. Matthias Franzreb
• Subject Area: Mechanical Process Engineering ; Chemical and Thermal Process Engineering
• Term: from 2017 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 382121967

The overriding objective of both, the current as well as the proposed project within the framework of SPP2045 is the development of a novel multidimensional fractionation process for magnetic and non-magnetic nanoparticle suspensions. The process should be scalable to industrial scale and enable continuous operation. The starting point for the technology development is the patent pending idea of combining the advantages of continuous countercurrent chromatography with a superimposed magnetic force onto the nanoparticles. This results in several explorable approaches for achieving the required multidimensionality. On the one hand, the magnetic force on a particle is a function of the particle shape in addition to the obvious material and size dependence. On the other hand, the final separation is also influenced by other variables, such as the magnetic properties of the fluid in which the particles are suspended and the hydrodynamic resistance.After the successful proof-of-concept in the first funding period, the objectives of the proposed follow-up project are to scale and optimize the process with regard to its potential for processing industrially relevant particle quantities and to broaden the field of application towards a multidimensional fractionation of para- and diamagnetic nanoparticles.

• DFG Programme: Priority Programmes
• Subproject of: SPP 2045: Highly specific and multidimensional fractionation of fine particle systemes with technical relevance