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We are now developing a device for reusing acid, and we need to find an authoritative organization to evaluate it. Which organization can do it?
-- Put it up and let everyone evaluate it for you. As long as Haichuan passes, sales should be fine. ： ) --
The device uses special resin to separate free acid and metal ions at room temperature through the ion blocking effect, and the regenerated acid can be reused. Specifically, the electrolyte from copper refining (to remove impurities such as iron), the acid leaching solution from rare earths, and the regeneration solution from rare metal cationic resins can be reused. As long as it is the separation of acids and inorganic impurities, it can basically be applied. Compared with diffusion dialysis and membrane methods, this technology has low investment and low operating costs. And there is no limit on scale. I hope all sea friends can provide more valuable opinions. neterli@hotmail.com
Can you elaborate on the characteristics of this resin?
4# FILTRATION-MAN This kind of resin is also called amphoteric resin. Its chemical structure is different from ordinary resin. When the resin comes into contact with waste acid, the hydrogen radicals and acid radicals of the free acid in the waste acid are adsorbed to the resin surface at the same time, while impurities, such as cations with large hydrogen ions, are not preferentially adsorbed, thereby achieving separation. Water can be used to regenerate the resin.
5# maradona0901 As long as the oxidizing property is not too strong, such as high-temperature nitric acid, etc., the resin will generally have no problems and can be used for several years.
-- ‘For example, cations with large hydrogen ions are not preferentially adsorbed. I don't understand. Can the poster explain the meaning of this sentence? What is a cation with a large hydrogen ion? --
From the most fundamental principle, I don't understand it very well. It seems that the material adsorbs acid ions. In order to balance the charge, cations must also be adsorbed. But only hydrogen cations can approach the material, and those larger than it, such as metal ions, are blocked and cannot approach. In terms of applications, I know more.
Mozhu, if it's convenient, could you give me some more advice?