【摘要】 论述了具有焦糖脱色能力的颗粒活性炭(GAC)在柠檬酸溶液脱色精制应用中的再生处理方法。对传统应用的NaOH再生方法进行了不同工艺方法和条件的研究。结果表明,在NaOH的再生过程中添加少量的氧化剂和表面活性剂,能提高再生GAC的吸附能力10%以上。氧化剂的加入量为GAC用量的3%,表面活性剂为0.1%。本研究为柠檬酸行业的液体精制脱色提供了一条经济的GAC再生方法。更多还原

【Abstract】 The regenerating method of granular activated carbon (GAC) capable of caramel decoloration used for decolorizing and refining citric acid solution was investigated. In experiments, improved means were adopted to advance the traditional regenerating method.During regeneration with NaOH,addition of a little amount of oxidizing agent and surface active agent can increase adsorption capacity of regenerated activated carbon over 10 %. The dosage of oxidizing agent is 3% of GAC; that of surface active agent is 0.1%. This investigation offers an economical method for regenerating GAC used for decolorizing and refining products for citric acid industry.更多还原