Disclosed herein is a method for producing low thermal conductivity fibers for manufacturing low thermal conductivity textiles, in accordance with some embodiments. Accordingly, the method may include a step of grinding manganese oxide into manganese oxide particles of a particle size ranging from 20 (nanometers) to 600 (nanometers). Further, the method may include a step of mixing the manganese oxide particles with an applicable substance for creating a masterbatch based on the grinding. Further, the masterbatch may include the manganese oxide particles in an amount ranging from 0.25% to 20% by weight of the masterbatch. Further, the method may include a step of applying the masterbatch to hollow fibers of a polymer based on the mixing. Further, the method may include a step of producing low thermal conductivity fibers based on the applying. Further, the low thermal conductivity textiles may be manufactured using the low thermal conductivity fibers.

A filtration membrane is provided. It comprises a porous support substrate and a porous active layer on top of the support substrate, wherein the active layer is formed of a network of interconnected, randomly arranged ceramic splats with ceramic particles occupying interstices between the splats, and wherein free spaces between the particles define a network of interconnected pores extending through the thickness of the active layer. There are also provided a method of filtering a feed using the membrane and a method of manufacturing the membrane by suspension plasma spraying.

The present invention provides a preparation method for a composite porous structure, comprising the following steps: step (a): preparing a porous substrate having multiple pores, a first surface and a second surface; and step (b): continuously feeding a cooling fluid to contact the first surface and to flow continuously to the second surface through the pores of the porous substrate, and heating a coating material to multiple molten particles by a heat source and spraying the molten particles onto the second surface of the porous substrate, so as to form a coating layer having multiple micropores on the second surface of the porous substrate and obtain the composite porous structure formed. Besides, also provided is a composite porous structure prepared by the preparation method.

The present disclosure relates to systems and methods for electrically conductive membrane separation from a mixture solution via membrane nanofiltration, electro-filtration, or electro-extraction by: generating an electric field at the membrane filter, holding the membrane filter at a constant electric potential, or driving a constant current through the membrane filter; feeding a mixture solution through the membrane nanofiltration system; and separating a component from the mixture solution into a permeate solution.

The present invention provides a preparation method for a composite porous structure, comprising the following steps: step (a): preparing a porous substrate having multiple pores, a first surface and a second surface; and step (b): continuously feeding a cooling fluid to contact the first surface and to flow continuously to the second surface through the pores of the porous substrate, and heating a coating material to multiple molten particles by a heat source and spraying the molten particles onto the second surface of the porous substrate, so as to form a coating layer having multiple micropores on the second surface of the porous substrate and obtain the composite porous structure formed. Besides, also provided is a composite porous structure prepared by the preparation method.

A filter for the filtration of a fluid includes or is composed of a support element made of a porous ceramic material, the element exhibiting a tubular or parallelepipedal shape including, in its internal portion, a set of adjacent channels separated from one another by walls of the porous inorganic material, in which at least a portion of the channels and/or the external surface are covered with a porous separating membrane layer for contacting the fluid to be filtered circulating in the channels and making possible the tangential or frontal filtration of the fluid. The layer is made of a material including a mixture of silicon carbide and of at least one compound chosen from silicon nitride or silicon oxynitride, the content by weight of elemental nitrogen, with respect to the content by weight of SiC in the material constituting the porous separating membrane layer, is between 0.02 and 0.15.