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Fixed bed mycofilter column optimization and performance evaluation through the removal of a food coloring agent from an aqueous solution
Published in Bioremediation Journal, 2023
Sanele M. Mnkandla, Patricks Voua Otomo
The food coloring solution was prepared by diluting the commercially available Moir’s sky blue food color [containing: brilliant blue FCF (E133), brillantcarmoisin O (E122), acidity regulator (E330), extra neutral ethanol, preservatives (E218), sodium benzoate (E211)] with distilled water, at pH = 7.5, or adjusted to pH = 2 using 0.1 M HCl. To determine the blue dye concentration, a standard curve was prepared from serial dilutions. Absorbances were measured at 629 nm using a Jenway 7300 spectrophotometer. The concentration was calculated using Beer’s law:
where A = absorbance; ε = molar absorptivity; b = path length of light and c = concentration.