Ultrasonic-assisted preparation of interlaced layered hydrotalcite (U–Fe/Al-LDH) for high-efficiency removal of Cr(VI): Enhancing adsorption-coupled reduction capacity and stability

Advances and Outlook of Heavy Metal Treatment Technology from Municipal Solid Waste Incineration Fly Ash: A Review

“…Ultrasonic transmission, as a popular external field enhancement technology, has the characteristics of excellent directionality, enormous energy and transmission power . The propagation of ultrasonic waves in the liquid will produce a cavitation effect, which will cause the formation, growth and rupture of microbubbles, and at the same time generate local high temperature and pressure and rapid turbulence, which will enhance the mass transfer of substances and increase the reaction rate in the system. ,, Nowadays, ultrasound-assisted technology has been widely used in synthetic chemistry, metallurgy, environmental treatment, and other fields. , Lin et al demonstrated that the effect of ultrasonic power on Cr fixation was significant, with Cr fixation exceeding 99.64% at parameters of 50 min, 800 W, 500 rpm and 8 L/kg. Consequently, the use of ultrasound-assisted techniques to augment the sulfonation and immobilization of heavy metals by minerals in MSWI fly ash on the basis of water washing is worth examining.…”

“…216,220,221 Nowadays, ultrasound-assisted technology has been widely used in synthetic chemistry, metallurgy, environmental treatment, and other fields. 220,222 Lin et al 223 demonstrated that the effect of ultrasonic power on Cr fixation was significant, with Cr fixation exceeding 99.64% at parameters of 50 min, 800 W, 500 rpm and 8 L/kg. Consequently, the use of ultrasound-assisted techniques to augment the sulfonation and immobilization of heavy metals by minerals in MSWI fly ash on the basis of water washing is worth examining.…”