PREPARATION METHOD OF ALUMINIUM-BASED POROUS HOLLOW FIBER MEMBRANE, AND THE STRAIGHT POROUS ALUMINIUM-BASED HOLLOW FIBER MEMBRANE IMPROVED SELECTIVE PERMEABILITY AND MECHANICAL STRENGTH FABRICATED BY THE SAME

摘要

The present invention relates to a manufacturing method of a porous aluminum-based hollow fiber membrane, and a linear porous aluminum-based hollow fiber membrane which has improved selective permeability and mechanical strength manufactured by the same and, more particularly, to a manufacturing method of a porous aluminum-based hollow fiber membrane which comprises: a step of manufacturing an aluminum precursor liquid by dissolving an aluminum precursor in the solvent (step 1); a step of manufacturing a spinning solution by adding a polymer resin in the aluminum precursor liquid of the step 1 (step 2); a step of manufacturing a hollow fiber membrane by dipping the spinning solution of the step 2 to coagulant after extruding through a nozzle (step 3); a step of heat treating the manufactured hollow fiber membrane of the step 3 (step 4); a step of sintering the heat treated hollow fiber membrane of the step 4 in a heating furnace by rotating (step 5); and a linear porous aluminum-based hollow fiber membrane manufactured by the same. The manufacturing method of a porous aluminum-based hollow fiber membrane is capable of mass-producing the hollow fiber membrane in which the unit price for producing is cheap by having a simple process; improving the heat-resisting property, the durability, the chemical-proof property, the mechanical strength, and high selective permeability by sintering with rotating inside a tube furnace; manufacturing linear porous aluminum-based hollow fiber membrane which has large valid membrane area per unit volume which is favorable to membrane modularization thereby efficiently using in a water treatment area which needs severe operation condition.