Cobalt(II)-, nickel(II)-bearing aqueous solutions may be treated with an extractant comprising an organic-soluble phosphinic acid, or a salt thereof, to separate the cobalt(II) from the aqueous solution. Typical extraction techniques compatible with the instant process include liquid- liquid extraction employing either mixer settlers or columns, packed beds of supported extractants as in ion exchange, liquid membrane extraction and selective supported membrane extraction.
含
钴(II)、
镍(II)的
水溶液可以用萃取剂处理,萃取剂包括有机溶解的
膦酸或其盐,以便从
水溶液中分离出
钴(II)。与本工艺兼容的典型萃取技术包括采用混合沉淀器或柱的液-液萃取、离子交换中的支撑萃取剂填料床、液膜萃取和选择性支撑膜萃取。