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The persimmon tannin gel can adsorb vanadium highly effectively from aqueous solutions containing VOCl 2 and NH 4 VO 3 , respectively. The adsorption of vanadium from the VOCl 2 solution had a broad maximum at around pH 5-6, while that from the NH 4 VO 3 solution, a sharp maximum at around pH 3.75 and a broad one at around pH 5-6. The adsorption of vanadium...
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