Figure 11

(a) TGA changes of mineralization products before and after ultrasonic treatment at 50 \(^{\circ }\)C condition. (b) TGA changes of mineralization products before and after ultrasonic treatment at 40 \(^{\circ }\)C condition. (c) TGA changes of mineralization products before and after ultrasonic treatment at 30 \(^{\circ }\)C condition.