PPA与热法磷酸制备活性炭差异性研究  

Study on the Difference of the Active Carbon Prepared by PPA and Hot Process Phosphoric Acid

作　　者：李文飞 张丹 郭举 刘美霞 

机构地区：[1]瓮福(集团)有限责任公司,贵州贵阳550000

出　　处：《广州化工》2015年第21期102-103,153,共3页GuangZhou Chemical Industry

摘　　要：采用食品级净化磷酸(食品级PPA)以及热法磷酸分别制备了活性碳,并对比研究了两种活性碳对亚甲基蓝的吸附率、灰份含量、磷酸回收率、活性碳收率等参数,同时引入电子级磷酸为参照,结果表明:以两种磷酸为原料制备的活性炭产品对亚甲基蓝的吸附率、灰份含量、磷酸回收率、活性碳收率等参数相差不大,食品级PPA可以取代热法磷酸用于活性炭制备工业,但其中电子级磷酸对亚甲基蓝的吸附率及灰分大小表现出了优异的性能。Activated carbon were prepared by food grade purified wet phosphoric acid（ food grade PPA） and hot process phosphoric acid,respectively. The parameters,such as the adsorption rate of methylene blue,ash content,phosphate recycle rate and active carbon recycle rate,were compared between two active carbon. At the same time,the electronic grade phosphoric acid was used as reference. The results showed that difference between adsorption rate of methylene blue,ash content,phosphate recycle rate and active carbon recycle rate of the parameters of activated carbon products prepared with two kinds of phosphoric acid was little. Food grade PPA can be used to replace the hot process phosphoric acid for the preparation of activated carbon. But the adsorption rate of methylene blue and ash content prepared by the electronic grade phosphoric acid showed excellent performance.

关 键 词：食品级PPA 热法磷酸 活性炭 灰分 亚蓝值 

分 类 号：TQ126.35[化学工程—无机化工]