摘要:
Aqueous hydrogen peroxide solutions contain variable amounts of carbon compounds following their production by the so-called anthraquinone process. Various methods are known for separating out carbon compounds, including those using organic ion exchangers or macro-porous organic adsorber resins. Described is a process using a solid adsorption agent, which can be regenerated without causing any problems, whereby the carbon content is reduced. The solid adsorption agent is a zeolite from the set of dealuminised H-Y-zeolites with a (SiO.sub.2 /Al.sub.2 O.sub.3) ratio equal to or greater than 20 or H-mordenites with a (SiO.sub.2 /A1.sub.2 O.sub.3) ratio of at least 20.
摘要翻译:过氧化氢水溶液通过所谓的蒽醌法生产后含有不同量的碳化合物。 已知有各种分离碳化合物的方法,包括使用有机离子交换剂或大孔有机吸附剂树脂的方法。 描述了使用固体吸附剂的方法,其可以再生而不引起任何问题,由此碳含量降低。 固体吸附剂是来自(SiO 2 / Al 2 O 3)比等于或大于20的脱铝H-Y-沸石组,或(SiO 2 / A 12 O 3)比至少为20的H-丝光沸石组成的沸石。
摘要:
A process for the separation of amino acids from aqueous solutions by adsorption on zeolites of different types. It is unnecessary to separate the biomass prior to the treatment.
摘要:
The invention relates to the removal of hydroxymonocarboxylic acids and tricarboxylic acids from aqueous solutions by adsorption on zeolites with a modulus of up to 400.