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The adsorption equilibrium of dark-coloured compounds from apple juice has been investigated as a function of several variables including activation conditions of bentonite (heat and acid treatments), clay concentrations (2×10 −3 –8×10 −3 kgclay/dm 3 apple juice) and temperature (range of 296–336K). The adsorption efficiency with acid-activated bentonite was greater than that...
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