Sono-assisted adsorption of organic compounds contained in industrial solution on iron nanoparticles supported on clay: Optimization using central composite design

Synergistic sono-adsorption and adsorption-enhanced sonochemical degradation of dyes in water by additive manufactured PVDF-based materials

“…In this regard, ultrasound-assisted adsorption and desorption has been known for a while; some early work on this topic were published over two decades ago [68] , [69] . However, the effect of ultrasound on adsorption processes did not receive much attention until recent years, where the number of publications on sono-adsorption for environmental remediation applications has flourished [42] , [43] , [70] , [71] , [72] , [73] , [74] , [75] , [76] , [77] , [78] . In all of these studies, though, experimental sono-adsorption data was routinely fitted to empirical models such as pseudo-first order adsorption kinetics, pseudo-second order adsorption kinetics, Elovich chemisorption kinetics and intraparticle diffusion that may lead to the incorrect interpretation of the mass transport mechanisms behind the overall adsorption process [56] .…”

“…This was achieved by developing a direct ink writing method to fabricate poled PVDF-BaTiO 3 composites via in-situ poling during 3D-printing. However, the use of the 3D-printed poled PVDF-BaTiO 3 composite in the degradation of RhB revealed the competing contribution of yet another simultaneous phenomenon that had rarely been associated to piezocatalysis before: ultrasound-assisted adsorption, also known as sono-adsorption [42] , [43] . To better understand this, a mechanistic model accounting for the main physico-chemical phenomena occurring in adsorption experiments under ultrasound was proposed, to the best of the author’s knowledge, for the very first time.…”

Sonoactivated Nanomaterials: A potent armament for wastewater treatment

“… Nanomaterial Synthesis method Ultrasound Parameters Main Pollutants Key Findings Ref. CuO-NP-AC Precipitation and deposition method 40 kHz, 130 W Pb 2+ , MG Adsorption of Pb 2+ ions and MG [105] ZnO-NRs-AC Hydrothermal method 60 kHz, 130 W Cd +2 , Co +2 ions, MB and CV Simultaneous removal of dyes and ions [106] Ni–Fe bimetallic Chemical reduction method 20 kHz, 0–250 W pentachlorophenol Effective dechlorination [107] TiO2–NPs–AC Hydrothermal method 37 kHz, 320 W congo red and phenol red Green Synthesis, adsorbed dyes [108] Iron Intercalated Bentonite Pillared clays synthesis 45 kHz, 100 W organic substance Effectively purification of industrial phosphoric acid [109] ZnAl 2 O 4 Sol-Gel method – heavy metal ions and dyes High efficiency to remove Cd 2+ , AO, and MB；Good stability [110] Ag/Cu/Mn modified TiO 2 Sonochemical synthesis. 20 kHz, 30 W cm −2 organic compounds Sono-Photocatalysis enhances organic matter degradation [111] ZnSnO3 Thermal decomposition method 33 ± 3 kHz, 120 W RB Efficient piezocatalyst for decontamination of organic pollutants [98] Single-walled carbon nanotubes Simulation 40 kHz, 500 W phenol Ultrasound can promote the adsorption of carbon nanotubes to phenol [112] nano-ZnO ...…”

Advances in ultrasound-assisted synthesis of photocatalysts and sonophotocatalytic processes: A review

“… 38 Numerous studies have investigated the sono-assisted photocatalytic degradation of various organic pollutants. 39 These pollutants encompass a wide range of compounds, including dyes, pharmaceuticals, pesticides, and emerging contaminants. 40 , 41 , 42 , 43 Researchers have explored the optimization of operating parameters, such as catalyst type, catalyst loading, sonochemical power, and reaction time, to achieve maximum degradation efficiency.…”