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Effects of dried hydrogel mass (a) and initial MB concentration (b) during adsorption studies to chitosan/pectin blend hydrogel (CPB) and chitosan/DNA blend hydrogel (CDB). Experimental conditions: initial MB concentration of 10.0 mg L−1 (Figure 7a), dried hydrogel mass of 10.0 mg (Figure 7b), temperatures of 25 °C and adsorption times of 24 h.
