engleski

Removal of Synthetic Dye Using a Low-cost Adsorbent: Column Studies

Brewers’ spent grain (BSG) has been investigated as a low cost adsorbent for the removal of synthetic dye Congo red (CR) from aqueous solution using columns. The results revealed that BSG can rapidly remove azo dye CR from water. Continuous flow operations were used to obtain breakthrough curves. Different experimental conditions were tested: BSG particle size (100-400 µm and 500-600 µm), column diameter (13 and 18 mm), bed height (2 and 4 cm) at dye concentration 50 mg/L, while the dye solution flow rate was kept constant (8 mL/min). The results showed 58% CR removal during the first few minutes. Maximum saturation capacity was 54.73 mg/g.

low cost adsorbent, Congo red, adsorption, column studies

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