Method of purifying aqueous solutions of metal hydroxides
    10.
    发明授权
    Method of purifying aqueous solutions of metal hydroxides 失效
    纯化金属氢氧化物水溶液的方法

    公开(公告)号:US4333913A

    公开(公告)日:1982-06-08

    申请号:US179147

    申请日:1980-08-18

    摘要: A process is disclosed for purifying aqueous solutions of metal hydroxides.An aqueous solution of a metal hydroxide, such as sodium hydroxide, containing a complex of a heavy metal contaminant, such as mercury, is heated.An oxidizing agent, such as hydrogen peroxide, is reacted with the solution to precipitate solid particles of an oxide of the heavy metal, for example, mercuric oxide, in a solution. The solid particles of mercuric oxide are separated from the solution by filtration.The purified solution comprised of water and sodium hydroxide and containing less than about 0.3 part per million mercury by weight is sold commercially. The solid particles of mercuric oxide are landfilled or otherwise utilized.

    摘要翻译: 公开了用于纯化金属氢氧化物的水溶液的方法。 加入含有重金属污染物如汞的络合物的金属氢氧化物如氢氧化钠的水溶液。 将氧化剂如过氧化氢与溶液反应以在溶液中沉淀重金属氧化物例如氧化汞的固体颗粒。 通过过滤将氧化汞固体颗粒与溶液分离。 包含水和氢氧化钠并且含有小于约0.3重量百万重量ppm的纯化溶液在商业上出售。 氧化汞固体颗粒填埋或以其他方式使用。