公开(公告)号：US07214301B2

公开(公告)日：2007-05-08

申请号：US10311338

申请日：2001-07-03

Applicant: Bernt Thorstensen

Inventor： Bernt Thorstensen

IPC: B01D57/02

CPC classification number: B01D67/0041 ,  B01D61/445 ,  B01D61/48 ,  B01D61/52 ,  B01D67/0044 ,  B01D67/0046 ,  B01D67/0048 ,  B01D67/0093 ,  B01D71/02 ,  B01D71/025 ,  B01D2323/38 ,  B01D2325/14 ,  B01D2325/16 ,  B01D2325/18 ,  B01J47/08 ,  C02F1/001 ,  C02F1/42 ,  C02F1/469 ,  C02F1/4693 ,  C02F2101/20 ,  C02F2103/16

Abstract: Filter or filter-element designated for Modified Electro-Dialysis (MED) purposes characterized in that the filter or filter-element comprises a porous, ceramic, mainly uniform material with functional, preferably ion selective groups grafted onto the inner, porous surface of the ceramic body. The outer surface of the filter or filter-element may be completely or partly covered by layers of porous, ceramic membranes with a pore size of less than 1 μm and thickness less than 1 mm, and/or anion, cation or bipolar groups or membranes. The thickness of the filter-element is larger than 1 mm and has pores of size larger than 1 μm. The invention also relates to a method for the manufacture of such a filter either continuously by tape-casting, extruding, rolling or calendaring or single-bodied by casting, pressing or forging, of a paste containing a non-conductive, ceramic material. The body is then sintered and finally grafted with functional, preferably ion selective groups for one or more specific ions or groups of ions, onto the inner, porous surface of the ceramic body. Use of the filter or filter-element for filtering ions or complexes of heavy or precious metals from water is also claimed.

Abstract translation: 用于改性电透析（MED）用途的过滤器或过滤器元件，其特征在于，过滤器或过滤元件包括多孔的，陶瓷的，主要均匀的材料，其具有接枝到陶瓷的内部多孔表面上的功能性，优选离子选择性基团 身体。 过滤器或过滤器元件的外表面可以完全或部分被孔径小于1um且厚度小于1mm的多孔陶瓷膜和/或阴离子，阳离子或双极基团或膜 。 过滤元件的厚度大于1mm，并且具有大于1μm的尺寸的孔。 本发明还涉及一种通过流延，挤出，轧制或压延连续制造这种过滤器的方法，或者通过铸造，压制或锻造包含非导电陶瓷材料的浆料单体制造方法。 然后将体烧结并最终用功能性的，优选的离子选择性基团接枝到陶瓷体的内部多孔表面上，用于一种或多种特定离子或离子基团。 还要求使用过滤器或过滤元件从水中过滤离子或重金属或贵金属的复合物。