How to remove iron ions from products?
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The product has turned yellow; after investigation, it is caused by residual iron ions. How can this be removed? The product is a liquid, and there are significant losses due to redistillation and distillation; is there any good solution?
Substances with strong adsorption properties (such as bentonite and activated carbon) are selected to effectively remove trace metal ions from oils; this not only helps in decolorization but also creates favorable conditions for further refining.
Activated carbon can be used for direct adsorption! ! ! ! ! ! ! ! ! ! !
The product is a bit thick; when activated carbon is added, it gets trapped inside and can no longer perform adsorption. Sir, is there any other good solution?
Please explain the product so that everyone can have a clear idea.
Are you a residue feedstock? Explain the product clearly so everyone doesn’t have to guess.
Add some EDTA during layered extraction; you can try to see if that solves the problem.
It can still be done in the future; the iron ions should be removed in advance. If the distillation tower is made of stainless steel, sodium sulfite can be dissolved in water to wash the tower and remove the iron ions. Another dry distillation tower.
What kind of products are they, and what are the specific manufacturing processes? A comprehensive analysis is needed to determine at which stage or with which equipment iron ions enter the product; source control is essential. Of course, there are many methods for removing iron