Adsorber Particles with Magnetically‐Supported Improved Electrochemical Conversion Behavior for Waste Water Treatment Processes

Micron‐sized supraparticles, consisting of a plurality of discrete nano‐ and microscale functional units, are assembled and fused by means of a droplet extrusion process. By combining nano magnetite, activated carbon, and conductive carbon with a polymeric binder matrix, particles are obtained which unite good magnetic properties, electrical conductivity, and adsorber activity through the high accessible surface area of the incorporated activated carbon of about 570 m2 g−1, thereby enabling a new approach toward sustainable water treatment processes. Due to the interplay of the components, it is possible to adsorb target substances, dissolved in the water which is demonstrated by the adsorption of the model dye methylene blue. A very fast adsorption kinetic and an adsorption capacity of about 400 mg g−1 is determined. By using the developed composite particles, it is also possible to electrochemically alter substances flowing through a magnetically‐stabilized fluidized‐bed reactor by electrochemically charging/discharging, significantly supported by the magnetic field enabling alternatingly optimum mobility/adsorption phases with contact/charging intervals. The electrochemical conversion can be increased up to 151% depending on the applied flow‐rate and electrical voltage. By applying an external magnetic field, a further increase of electrochemical conversion of up to 70% can be observed

Versatile triggered substance release systems via a highly flexible high throughput encapsulation technique

Herein, a new high speed process for microcapsule generation in the field of medium-to-large-size capsules (0.2–5 mm) is reported which is rendered possible by combining three basic processing techniques in one system, namely the coextrusion technique, the vibrational nozzle technique and UV-curing. The versatility of the process is impressing, when it is combined with suitable materials. This is demonstrated for controlled release systems for concrete additives (superplasticizers) based on core–shell as well as matrix-type morphology that are assembled herein. It is shown that the process is highly flexible with respect to the material that can be encapsulated and, moreover, highly adjustable with respect to release mechanisms as these can be steered via the flexible choice of the shell materials. Eventually, the capsules can be created in a highly robust way and at remarkable throughput speed

Nanostrukturierte Mikropartikel aus silanisierten Primärpartikeln mit steuerbarer Redispergierbarkeit und Verfahren zu deren Herstellung:

Die vorliegende Erfindung betrifft nanostrukturierte Mikropartikel, die silanisierte Primärpartikel enthalten und deren Redispergierbarkeit gesteuert werden kann. Außerdem bezieht sich die Erfindung auf die Verwendung dieser Mikropartikel und auf ein Verfahren zu deren Herstellung

Adsorber Particles with Magnetically‐Supported Improved Electrochemical Conversion Behavior for Waste Water Treatment Processes

Micron‐sized supraparticles, consisting of a plurality of discrete nano‐ and microscale functional units, are assembled and fused by means of a droplet extrusion process. By combining nano magnetite, activated carbon, and conductive carbon with a polymeric binder matrix, particles are obtained which unite good magnetic properties, electrical conductivity, and adsorber activity through the high accessible surface area of the incorporated activated carbon of about 570 m$^{2}$ g$^{-1}$, thereby enabling a new approach toward sustainable water treatment processes. Due to the interplay of the components, it is possible to adsorb target substances, dissolved in the water which is demonstrated by the adsorption of the model dye methylene blue. A very fast adsorption kinetic and an adsorption capacity of about 400 mg g$^{-1}$ is determined. By using the developed composite particles, it is also possible to electrochemically alter substances flowing through a magnetically‐stabilized fluidized‐bed reactor by electrochemically charging/discharging, significantly supported by the magnetic field enabling alternatingly optimum mobility/adsorption phases with contact/charging intervals. The electrochemical conversion can be increased up to 151% depending on the applied flow‐rate and electrical voltage. By applying an external magnetic field, a further increase of electrochemical conversion of up to 70% can be observed