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The recovery of direct dye by adsorption on cross-linked fiber (ChF-B), which we have developed, appeared technically feasible. The concentration of amino group fixed in the adsorbent phase was 3.30 mol/kg dry fiber. A typical direct dye, Brilliant Yellow (M.W.=625, divalent anion) was used in this experimental study. The breakthrough curves for adsorption of the dye were measured for different...
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