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by alkaline extraction of lignite or brown coal or leonardite.
It is water soluble, contains hydroxyl, carboxylate and other active groups, has the functions of chelation,
complexing, ion exchange, floc, dispersion and adhesion.
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by alkaline extraction of lignite or brown coal or leonardite.
It is water soluble, contains hydroxyl, carboxylate and other active groups, has the functions of chelation,
complexing, ion exchange, floc, dispersion and adhesion.