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    • 1. 发明授权
    • Alginate gel based adsorbents for heavy metal removal
    • 用于重金属去除的藻酸盐凝胶基吸附剂
    • US06989102B1
    • 2006-01-24
    • US09469818
    • 1999-12-22
    • Hyun Gyu ParkKyung Hwa KimMyeong Yun ChaeEu Gene OhEun Yeol Lee
    • Hyun Gyu ParkKyung Hwa KimMyeong Yun ChaeEu Gene OhEun Yeol Lee
    • C02F1/28
    • C08B37/0084B01J20/20B01J20/26B01J20/262B01J20/267B01J2220/46C02F1/283C02F1/286C02F1/288C02F2101/20C02F2101/322C08J3/075C08J2305/04C08L3/02C08L5/00C08L5/04C08L97/02C08L2205/02Y02W10/37C08L2666/26
    • An alginate gel adsorbent to remove heavy metal ions according to the present invention is prepared by adding dropwisely 0.1-5 wt % alginate solution to a polyvalent cationic solution thereby cross-linking alginic acid with polyvalent cations. An alginate gel adsorbent containing activated carbon capable of simultaneously removing heavy metal ions and organotoxic materials, that is, activated carbon/alginate gel adsorbent, is prepared by adding dropwisely a mixed solution of 0.17-10 wt % of alginate and 0.1-10 wt % of activated carbon powder to a polyvalent cationic solution thereby cross-linking alginic acid with polyvalent cations in order to immobilize polyvalent cation to alginic acid containing activated carbon. The polyvalent cationic solution is selected from the group consisting of calcium chloride (CaCl2), strontium chloride (SrCl2), barium chloride (BaCl2) and aluminium chloride (AlCl3). A flat board or a thin membrane coated alginate gel adsorbent can be prepared by coating alginate gels onto a supporter such as paper, wood plate and textile fabrics. The alginate gel adsorbent for water purification can be applied to a water purifier as well as a process of wastewater treatment. The alginate gel coated onto a supporter is prepared by immersing a supporter in 0.05-5 wt % alginate solution so that the supporter may uniformly adsorb the alginate solution, immersing the supporter in a polyvalent cationic solution thereby forming alginate gel on the surface of the supporter, and drying the supporter formed with alginate gel thereon.
    • 通过将0.1-5重量%的藻酸盐溶液滴加到多价阳离子溶液中,由此将藻酸与多价阳离子交联,制备了根据本发明的用于去除重金属离子的藻酸盐凝胶吸附剂。 通过滴加0.17-10重量%的藻酸盐和0.1-10重量%的藻酸盐的混合溶液,制备含有能够同时除去重金属离子和有机毒物质的活性炭的藻酸盐凝胶吸附剂,即活性炭/藻酸盐凝胶吸附剂, 的活性炭粉末与多价阳离子溶液反应,从而将藻酸与多价阳离子交联,以便将多价阳离子固定在含藻酸的活性炭中。 多价阳离子溶液选自氯化钙(CaCl 2 Cl 2),氯化锶(SrCl 2 Cl 2),氯化钡(BaCl 2 N 2) >)和氯化铝(AlCl 3 3)。 可以通过将藻酸盐凝胶涂布在诸如纸,木板和纺织品的支撑物上来制备平板或薄膜包衣藻酸盐凝胶吸附剂。 用于水净化的藻酸盐凝胶吸附剂可以应用于净水器以及废水处理过程。 通过将支持体浸渍在0.05-5重量%的藻酸盐溶液中来制备涂覆在支持体上的藻酸盐凝胶,使得载体可以均匀地吸附藻酸盐溶液,将载体浸入多价阳离子溶液中,从而在支持物的表面上形成藻酸盐凝胶 ,并将其上形成有藻酸盐凝胶的载体干燥。