11.

Adsorption as a function of time at different temperatures at pH 2 (A) and pH 7 (B). Experimental conditions: 0.1 g of inactivated BSY was added to 50 mL of buffer solution containing tartrazine dye at a concentration of 10 mg·L^–1. Samples were incubated at 10, 25, 37, and 90 °C.