| 摘要 |
PROBLEM TO BE SOLVED: To provide shaped cellulose articles for selective binding of monovalent heavy metal ions, especially thallium and cesium ions and radioactive isotopes thereof.SOLUTION: There are provided shaped lyocell cellulose articles in which one or more hexacyanoferrates are incorporated in a cellulosic matrix and uniformly distributed therein. The shaped articles can be fibers, fibrids, fibrous nonwoven webs, granules, beads, self-supporting films, tubular films, filaments, sponges, foams or bristles. They are useful for water treatment and water decontamination, for metal beneficiation, for treatment of wound with wound dressings, for air and gas filtration and in protective apparel. |
