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. 2020 Dec 27;72:105453. doi: 10.1016/j.ultsonch.2020.105453

Fig. 3.

Fig. 3

Effect of (a) ultrasound amplitude and (b) reaction time in the UANS process. Experimental conditions: 25 mL of acid solution (13.6 mL of 18.4 mol L−1 H2SO4 + 9.2 mL of 14.4 mol L−1 HNO3 + 2.2 mL H2O); 1 g of microcrystalline cellulose; 30 °C (error bars are the standard deviation, n = 3).