Sonochemical hydrogenation of metallic microparticles.
We report the sonochemical synthesis of hydrogenated metallic microparticles through room-temperature ultrasonic irradiation of aqueous metallic slurries. The role of saturating gases and of reduction-oxidation mechanism on promoting the hydride formation is investigated. The method is then applied to study the synthesis of different metallic hydrides (Mn, Ti) and the hydrogenation of La(Fe,Mn,Si)13, an intermetallic compound with magnetocaloric properties used in magnetic refrigeration applications. The samples were characterized by X-ray diffraction to identify the presence of hydrogenated phases, by differential scannin...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Troia A, Olivetti ES, Martino L, Basso V Tags: Ultrason Sonochem Source Type: research

Ultrasound-mediated fucoxanthin rich oil nanoemulsions stabilized by κ-carrageenan: Process optimization, bio-accessibility and cytotoxicity.
Ultrasound-mediated fucoxanthin rich oil nanoemulsions stabilized by κ-carrageenan: Process optimization, bio-accessibility and cytotoxicity. Ultrason Sonochem. 2019 Jul;55:105-116 Authors: Saravana PS, Shanmugapriya K, Gereniu CRN, Chae SJ, Kang HW, Woo HC, Chun BS Abstract This work aims to produce and optimize a κ-carrageenan-based nanoemulsion (NE) to encapsulate seaweed oil, which is rich in fucoxanthin (FX), using ultrasound-assisted emulsification. κ-Carrageenan was produced using subcritical water, and seaweed oil was extracted using supercritical carbon dioxide with sunflowe...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Saravana PS, Shanmugapriya K, Gereniu CRN, Chae SJ, Kang HW, Woo HC, Chun BS Tags: Ultrason Sonochem Source Type: research

Sonocatalytic degradation of tetracycline antibiotic using zinc oxide nanostructures loaded on nano-cellulose from waste straw as nanosonocatalyst.
Abstract The aim of the present investigation was the combination of ZnO nanostructures with nano-cellulose (NC) for the efficient degradation of tetracycline (TC) antibiotic under ultrasonic irradiation. The removal efficiency of 12.8% was obtained by the sole use of ultrasound (US), while the removal efficiency increased up to 70% by the US/ZnO treatment process. Due to the integration of ZnO nanostructures with NC, the removal efficiency of 87.6% was obtained within 45 min. The removal efficiency substantially decreased in the presence of tert-butyl alcohol (more than 25% reduction), indicating that radOH-med...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Soltani RDC, Mashayekhi M, Naderi M, Boczkaj G, Jorfi S, Safari M Tags: Ultrason Sonochem Source Type: research

Enhancing the recovery of whey proteins based on application of ultrasound in ultrafiltration and spray drying.
Abstract Improvements in the membrane separation of whey and subsequent spray drying for the recovery of Whey Protein Concentrate (WPC) have been investigated in the present work. Initially, ultrasonic pretreatment of whey was performed to reduce the microbial contamination and possibly improve the membrane separation based on inducing changes in the whey proteins. Studies involving the effect of important parameters in the membrane operation such as transmembrane pressure (TMP), type of membrane and molecular weight cutoff (MWCO) on permeate flux established that 10 kDa hydrosart membrane gives maximum permeate...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Prabhuzantye T, Khaire RA, Gogate PR Tags: Ultrason Sonochem Source Type: research

Ultrasound assisted purification of polyphenols of apple skins by adsorption/desorption procedure.
Abstract The ultrasound (US) assisted purification of polyphenols of apple skins by adsorption/desorption on the poly-aromatic Amberlite adsorbent XAD-16 was studied. The adsorption steps were done at different temperatures (T = 25-40 °C) with application of US at different intensities (P = 0-400 W). The desorption steps were tested in aqueous ethanol solution at different concentrations of ethanol (Cet = 0-96%). The isotherm of polyphenol adsorption was well described using the Freundlich model. The data on adsorption kinetics and static isotherm evidenced the presence of adsorption on heterog...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Wang L, Boussetta N, Lebovka N, Vorobiev E Tags: Ultrason Sonochem Source Type: research

Ultrasonic preparation, stability and thermal conductivity of a capped copper-methanol nanofluid.
Abstract This paper describes a two-step method to prepare novel copper-methanol nanofluids capped with a short chain molecule, (3-Aminopropyl)trimethoxysilane (APTMS). Two commercial nanopowders were dispersed at various powers using a 20 kHz ultrasonic probe into solutions of methanol and the capping agent. Ultrasonic energy input was measured by calorimetry with z-average diameters, intensity and number size distributions recorded by a dynamic light scattering technique. The stability of the dispersion was monitored visually, and quantified by recording the zeta potential. Dispersions of the bare powder were ...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Graves JE, Latvytė E, Greenwood A, Emekwuru NG Tags: Ultrason Sonochem Source Type: research

Ultrasound assisted crystallization of a new cardioactive prototype using ionic liquid as solvent.
e; MI Abstract This work deals with the antisolvent crystallization of LASSBio-294 (3,4-methylenedioxybenzoyl-2-thienylhydrazon) assisted by ultrasound. An ionic liquid (IL), 1-ethyl-3-methylimidazolium methyl phosphonate [emim][CH3O(H)PO2] was used as solvent and water as antisolvent. The influence of the following parameters on crystals properties (size distribution, morphology, residual solvent and in vitro dissolution) were studied with two mixing mode (quick and dropwise) of solution with antisolvent. The impact of washing and drying process was also evaluated. Comparative studies of conventional crystallizat...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Resende de Azevedo J, Espitalier F, Ré MI Tags: Ultrason Sonochem Source Type: research

Sonocatalytic activity of biochar-supported ZnO nanorods in degradation of gemifloxacin: Synergy study, effect of parameters and phytotoxicity evaluation.
This study focuses on the facile preparation of ZnO-biochar (ZnO-BC) nanocomposite prepared by the hydrothermal approach as an efficient sonocatalyst for degradation and mineralization of gemifloxacin (GMF). Morphological and textural characteristics of bare biochar (BC), ZnO nanorods (ZnO NRs) and ZnO-BC nanocomposite were investigated using TEM, SEM and BET analyses. Moreover, XRD, FTIR, EDX and UV-vis DRS analyses were performed to study the crystalline structure, functional groups, elemental composition and optical properties of the samples, respectively. ZnO-BC nanocomposite showed better sonocatalytic performance tha...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Gholami P, Dinpazhoh L, Khataee A, Orooji Y Tags: Ultrason Sonochem Source Type: research

A facile ultrasonic-aided biosynthesis of ZnO nanoparticles using Vaccinium arctostaphylos L. leaf extract and its antidiabetic, antibacterial, and oxidative activity evaluation.
Abstract The synthesis of nanoparticles often result in the generation of harmful chemical pollutants. As such, many researchers have focused on developing green processes, which include the biosynthesis. In this research, ZnO nanoparticles were prepared using the leaf extract of whortleberry (Vaccinium arctostaphylos L.) via a simple ultrasonic-assisted method. The morphology, crystal size and structure, surface, thermal, and optical properties of the bio-mediated ZnO sample (ZnOext) were analyzed and compared with that produced without incorporating the extract (ZnOchem). The ZnO samples were evaluated for their...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Bayrami A, Alioghli S, Rahim Pouran S, Habibi-Yangjeh A, Khataee A, Ramesh S Tags: Ultrason Sonochem Source Type: research

Pulsed ultrasound for temperature control and clogging prevention in micro-reactors.
Abstract Ultrasonic micro-reactors are frequently applied to prevent micro-channel clogging in the presence of solid materials. Continuous sonication will lead to a sizeable energy input resulting in a temperature increase in the fluidic channels and concerns regarding microchannel degradation. In this paper, we investigate the application of pulsed ultrasound as a less invasive approach to prevent micro-channel clogging, while also controlling the temperature increase. The inorganic precipitation of barium sulfate particles was studied, and the impact of the effective ultrasonic treatment ratio, frequency and loa...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Delacour C, Lutz C, Kuhn S Tags: Ultrason Sonochem Source Type: research

Enhanced sono-photocatalysis of tetracycline antibiotic using TiO2 decorated on magnetic activated carbon (MAC@T) coupled with US and UV: A new hybrid system.
In conclusion, integration of MAC@T composite and US/UV for enhancing catalytic degradation efficiency can be introduced as a successful and promising technique, owing to excellent catalytic activity, easy recovery, good adsorption capacity and high durability and recycling potential. PMID: 31084793 [PubMed - in process] (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Kakavandi B, Bahari N, Rezaei Kalantary R, Dehghani Fard E Tags: Ultrason Sonochem Source Type: research

Variation of efficiencies and limits of ultrasonication for practical algal bloom control in fields.
In this study, relatively low frequencies (36-175 kHz) of ultrasonication with low power intensity, less than 650 W, were tested for algal control in various pilot (100-750 L) and field (4 m3) tests in a short duration (
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Park J, Son Y, Lee WH Tags: Ultrason Sonochem Source Type: research

Ultrasonic/sonochemical synthesis and evaluation of nanostructured oil in water emulsions for topical delivery of protein drugs.
In conclusion, our analyses of the experiments proved the fact that nanoemulsions are promising novel formulations for protein drugs and can greatly enhance stability of protein drugs. PMID: 31084795 [PubMed - in process] (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Mohamadi Saani S, Abdolalizadeh J, Zeinali Heris S Tags: Ultrason Sonochem Source Type: research

Effects of ultrasonics combined with far infrared or microwave thawing on protein denaturation and moisture migration of Sciaenops ocellatus (red drum).
Abstract The influence of ultrasonics combined with microwave thawing (UMT) and ultrasonics combined with far-infrared thawing (UIT) on the water migration and protein denaturation of red drum were studied. Five treatments were used: ultrasonics thawing (UT), microwave thawing (MT), far-infrared thawing (IT), UIT and UMT were used for thawing red drum filets. Moisture migration and protein aggregation were studied using nuclear magnetic resonance (NMR) and particle size, respectively. Raman spectra and fluorescence spectra were used to study the secondary and tertiary structure of protein. SEM was done to observe ...
Source: Ultrasonics Sonochemistry - May 17, 2019 Category: Chemistry Authors: Cai L, Zhang W, Cao A, Cao M, Li J Tags: Ultrason Sonochem Source Type: research

Structural, magnetic, optical properties and cation distribution of nanosized Ni0.3Cu0.3Zn0.4TmxFe2-xO4 (0.0  ≤ x ≤ 0.10) spinel ferrites synthesized by ultrasound irradiation.
In this study, Tm3+ ion substituted NiCuZn nanospinel ferrites, Ni0.3Cu0.3Zn0.4TmxFe2-xO4 (0.0 ≤ x ≤ 0.10), have been synthesized sonochemically. The structural, spectroscopic, morphological, optic and magnetic investigation of the samples were done by X-ray powder diffractometry (XRD), Fourier transform infrared spectrophotometry (FT-IR), UV-Vis diffused reflectance (%DR) spectrophotometry, transmission and scanning electron microscopies (TEM and SEM) along with EDX, Vibrating sample magnetometry (VSM), respectively. The purity of prepared products were confirmed via XRD, FT-IR, EDX and elemental mapping ana...
Source: Ultrasonics Sonochemistry - May 3, 2019 Category: Chemistry Authors: Slimani Y, Almessiere MA, Sertkol M, Shirsath SE, Baykal A, Nawaz M, Akhtar S, Ozcelik B, Ercan I Tags: Ultrason Sonochem Source Type: research

Ultrasound-assisted hydrothermal method for the preparation of the M-Fe2O3-CuO (M: Mn, Ag, Co) mixed oxides nanocatalysts for low-temperature CO oxidation.
Abstract In this article, M-Fe2O3-CuO (M: Mn, Ag and Co) mixed oxides nanocatalysts were synthesized by a novel ultrasound-assisted hydrothermal method and the effect of irradiation power and time on the physicochemical and catalytic properties in oxidation of carbon monoxide at low temperature was investigated. The synthesized samples were studied using XRD, BET, TPR and SEM techniques. The results indicated that the incorporation of Mn into Cu-Fe catalyst had a significant influence on the catalytic properties and the catalyst promoted with 10 wt% Mn exhibited the full conversion of CO at 100 °C. This ca...
Source: Ultrasonics Sonochemistry - April 30, 2019 Category: Chemistry Authors: Rezaei P, Rezaei M, Meshkani F Tags: Ultrason Sonochem Source Type: research

Effect of high-intensity ultrasound irradiation on the stability and structural features of coconut-grain milk composite systems utilizing maize kernels and starch with different amylose contents.
Abstract In this paper, a coconut milk composite system (glycerin monostearate as an emulsifier) with different maize additives (e.g., maize kernels and starch with different amylose contents) was treated with high-intensity ultrasound irradiation (HIUS, frequency 20 kHz). The stability and structural features of the added coconut milk emulsion were studied. Comparing the mechanical emulsifications, coconut milk with maize kernels was similar to coconut milk with high-amylose maize starch. However, coconut milk with a high proportion of amylopectin had the best stability. After ultrasonic treatment, the particle...
Source: Ultrasonics Sonochemistry - March 5, 2019 Category: Chemistry Authors: Lu X, Chen J, Zheng M, Guo J, Qi J, Chen Y, Miao S, Zheng B Tags: Ultrason Sonochem Source Type: research

Sonochemical versus hydrothermal synthesis of bismuth tungstate nanostructures: Photocatalytic, sonocatalytic and sonophotocatalytic activities.
Abstract In the present work, an ultrasound-assisted hydrothermal method was applied as a new approach for the synthesis of Bi2WO6 nanostructures. In sonication, a cup horn system as an indirect high intensity sonicator was used. To determine the influence of ultrasonic waves on the morphology, Bi2WO6 was also synthesized using the hydrothermal method. The conventional and sonochemical products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared (FTIR), Raman, photoluminescence (PL), and UV-Vis (UV-Vis) spectroscopies. The XRD...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Zargazi M, Entezari MH Tags: Ultrason Sonochem Source Type: research

Sonochemical synthesis of bismuth(III) oxide decorated reduced graphene oxide nanocomposite for detection of hormone (epinephrine) in human and rat serum.
Abstract Herein, we report an efficient electrochemical sensor strategy for determination of epinephrine based on Bi2O3 nanoparticle decorated reduced graphene oxide nanocomposite (Bi2O3@RGO). The Bi2O3@RGO was prepared by simple ultrasonic method and then it's morphological and crystal structure aspects were well characterized by physiological instruments. The electrode-electrolyte interfacial properties were examined to ensure the catalytic ability of composite sensing towards EP. The composite was deposited on the multi-conventional screen-printed electrode and was found to be desirable performance toward EP ox...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Manavalan S, Rajaji U, Chen SM, Govindasamy M, Selvin SSP, Chen TW, Ali MA, Al-Hemaid FMA, Elshikh MS Tags: Ultrason Sonochem Source Type: research

Ultrasound-assisted extraction of bioactive compounds from green tea leaves and clarification with natural coagulants (chitosan and Moringa ole ífera seeds).
In this study, a sequential process of extraction and clarification by natural coagulants and centrifugation successfully produced green tea extracts clear and enriched in bioactive compounds. Desirability function methodology was applied to optimize ultrasound-assisted extraction (UAE) of total polyphenols and flavonoids by the evaluation of the parameters temperature (22-83 °C), tea-to-water ratio (12-73 g  L-1) and amplitude (23-77%). Green tea clarification was carried out using the extract at UAE optimized conditions (77, 73 g L-1, 77%). The effect of centrifugation and the concentrations of chitosan (...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Menezes Maciel Bindes M, Hespanhol Miranda Reis M, Luiz Cardoso V, Boffito DC Tags: Ultrason Sonochem Source Type: research

Impact of ultrasound and conventional extraction techniques on bioactive compounds and biological activities of blue butterfly pea flower (Clitoria ternatea L.).
Abstract The present study was conducted to evaluate the influence of ultrasound on bioactive compounds and biological activities of blue butterfly pea flower (Clitoria ternatea L.). For this purpose, optimized conditions (temperature 50 °C, time 150 min, solid to liquid ratio 1 g:15 ml, 70% amplitude and 240 W, 20 kHz frequency, 3 s on and 3 s off) of ultrasound (US) and conventional extraction (AGE: Agitation, water bath for 150 min, 50 °C at 150 rmp) were used. The results showed significant (p  0.05) effect of US and AGE over TFlaCs and PACs were observed. Moreover, the result...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Mehmood A, Ishaq M, Zhao L, Yaqoob S, Safdar B, Nadeem M, Munir M, Wang C Tags: Ultrason Sonochem Source Type: research

Urea functionalization of ultrasound-treated biochar: A feasible strategy for enhancing heavy metal adsorption capacity.
This study investigates the capability of biochar in adsorbing Ni(II) as a hazardous contaminant and aims at enhancing its adsorption capacity by the addition of extra nitrogen and most probably phosphorous and oxygen containing sites using an ultrasono-chemical modification mechanism. To reach this objective, biochar physically modified by low-frequency ultrasound waves (USB) was chemically treated by phosphoric acid (H3PO4) and then functionalized by urea (CO(NH2)2). Cavitation induced by ultrasound waves exfoliates and breaks apart the regular shape of graphitic oxide layers of biochar, cleans smooth surfaces, and incre...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Sajjadi B, Broome JW, Chen WY, Mattern DL, Egiebor NO, Hammer N, Smith CL Tags: Ultrason Sonochem Source Type: research

Adsorption of bulk nanobubbles on the chemically surface-modified muscovite minerals.
In this study, the adsorption behaviors of bulk NBs generated in the principle of HC on muscovite surfaces in the presence of dodecylamine (DDA) were investigated. The results show that NBs are likely coated with DDA in aqueous solutions. After attaching with muscovite, bulk NBs can adsorb on the mineral surfaces, probably following the three-contact line pinning theory. The adsorption of NBs increases the surface hydrophobicity of minerals, which can be inferred from the larger contact angles and the better flotation performances obtained in the presence of DDA/NBs. In addition, the adsorption of NBs is thought to be able...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Zhou W, Niu J, Xiao W, Ou L Tags: Ultrason Sonochem Source Type: research

A rapid ultrasonic energy assisted preconcentration method for simultaneous extraction of lead and cadmium in various cosmetic brands using deep eutectic solvent: A multivariate study.
Abstract An innovative ultrasonic assisted microextraction method using a deep eutectic solvent for entrapping the organ metallic complexes was developed to pre-concentrate the trace quantities of cadmium (Cd) and lead (Pb) in lipsticks and eye shadows of different brands prior to flame atomic absorption spectrometry analysis. A deep eutectic solvent (DES) was used in this study, prepared by mixing metal salt (ZnCl2) and hydrogen bond donors such as (acetamide) in different ratio. The different branded cosmetic items, lipstick and eye shadows, obtained from local market and subjected to acid digestion prior to app...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Kazi TG, Afridi HI, Bhatti M, Akhtar A Tags: Ultrason Sonochem Source Type: research

Effect of different electrolytes and deposition time on the supercapacitor properties of nanoflake-like Co(OH)2 electrodes.
Abstract The effect of ultrasonic treatment and deposition time on nanoflake-like Co(OH)2 thin films were prepared using the potentiostatic mode of electrodeposition method on stainless steel substrates by a nitrate reduction reaction. After ultrasonic treatment, we used stainless steel substrates for deposition of the nanoflakes like Co(OH)2 thin films. The effect of deposition times and electrolytes on different physico-chemical properties of Co(OH)2 was investigated in detail, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), and e...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Maile NC, Shinde SK, Koli RR, Fulari AV, Kim DY, Fulari VJ Tags: Ultrason Sonochem Source Type: research

Intensified approach for desulfurization of simulated fuel containing thiophene based on ultrasonic flow cell and oxidizing agents.
Abstract Intensified desulfurization of simulated crude fuel containing thiophene has been investigated using ultrasonic flow cell in combination with oxidizing agents such as peracetic acid, hydrogen peroxide (H2O2) and Fenton reagent at ambient conditions. The effect of thiophene loading, recirculation flow rate and the oxidant loading on the extent of desulfurization has been studied at 1 L capacity. Combination of ultrasound and hydrogen peroxide at optimized loading of 8% resulted in higher extent of desulfurization (38%) as compared to only ultrasound (17%). Higher degree of enhancement in extent of desulf...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: More NS, Gogate PR Tags: Ultrason Sonochem Source Type: research

Sonocatalytic treatment of phosphonate containing industrial wastewater intensified using combined oxidation approaches.
Abstract Treatment of actual industrial wastewater is a challenging task and has not been investigated using the cavitation-based approaches significantly. In the present work, sonocatalytic degradation (catalysts as CuO and TiO2) of phosphonate based industrial wastewater, procured from a local company, has been studied in terms of COD reduction under optimized conditions (established using initial studies involving only ultrasound) of pH as 3.2, the temperature of 32 ± 2 °C and 120 min as treatment time. The combination of ultrasound with H2O2 and ozone in different approaches has been investi...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Ayare SD, Gogate PR Tags: Ultrason Sonochem Source Type: research

Effect of ultrasonic on deterioration of oil in microwave vacuum frying and prediction of frying oil quality based on low field nuclear magnetic resonance (LF-NMR).
In conclusion, compared with the microwave vacuum frying, the ultrasonic combined with microwave vacuum frying can delay the deterioration of the frying oil and the physicochemical properties of frying oil could be well predicted by the LF-NMR T2 relaxation characteristics during the frying process. PMID: 30514488 [PubMed - in process] (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Sun Y, Zhang M, Fan D Tags: Ultrason Sonochem Source Type: research

Catalytic hydrodeoxygenation of rubber seed oil over sonochemically synthesized Ni-Mo/ γ-Al2O3 catalyst for green diesel production.
Catalytic hydrodeoxygenation of rubber seed oil over sonochemically synthesized Ni-Mo/γ-Al2O3 catalyst for green diesel production. Ultrason Sonochem. 2019 Mar;51:90-102 Authors: Ameen M, Azizan MT, Ramli A, Yusup S, Alnarabiji MS Abstract Hydrodeoxygenation is one of the promising technologies for the transformation of triglycerides into long-chain hydrocarbon fuel commonly known as green diesel. The hydrodeoxygenation (HDO) of rubber seed oil into diesel range (C15-C18) hydrocarbon over non-sulphided bimetallic (Ni-Mo/γ-Al2O3 solid catalysts were studied. The catalysts were synthesized v...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Ameen M, Azizan MT, Ramli A, Yusup S, Alnarabiji MS Tags: Ultrason Sonochem Source Type: research

Ultrasound promoted transition metal doped polyaniline nanofibers: Enhanced electrode material for electrochemical energy storage applications.
Abstract Here in, we report a simple and facile method to synthesis morphology oriented transition metal (Nickel) doped polyaniline (Ni2+/PANI) by chemical oxidative polymerization with the assistance of ultrasonic irradiation. Physicochemical property of the materials examined through XRD and FT-IR. The morphological feature exposed that the sonochemical assisted Ni2+ doped PANI is differing from the conventional method and it reveals a notable electrochemical property as in the form of specific capacitance (370 F g-1 at 0.5 A g-1) with improved rate capability and sustained cycling performance due to its...
Source: Ultrasonics Sonochemistry - December 7, 2018 Category: Chemistry Authors: Arulmani S, Wu JJ, Anandan S Tags: Ultrason Sonochem Source Type: research

Ultrasound-assisted heterogeneous activation of persulfate by nano zero-valent iron (nZVI) for the propranolol degradation in water.
This study investigated the degradation of propranolol (PRO), a beta (β)-blockers, by nano zero-valent iron (nZVI) activated persulfate (PS) under ultrasonic irradiation. Effects of several critical factors were evaluated, inclusive of PS concentration, nZVI dosage, ultrasound power, initial pH, common anions, and chelating agent on PRO degradation kinetics. Higher PS concentration, nZVI dosage and ultrasound power as well as acidic pH favored the PRO degradation. Conversely, anions and chelating agent took on the inhibitory effect towards PRO degradation to different extents. Furthermore, the variations of morphology...
Source: Ultrasonics Sonochemistry - September 11, 2018 Category: Chemistry Authors: Gao YQ, Gao NY, Wang W, Kang SF, Xu JH, Xiang HM, Yin DQ Tags: Ultrason Sonochem Source Type: research

Ultrasound-assisted synthesis of two novel [CuBr(diamine)2 ·H2O]Br complexes: Solvatochromism, crystal structure, physicochemical, Hirshfeld surface thermal, DNA/binding, antitumor and antibacterial activities.
Ultrasound-assisted synthesis of two novel [CuBr(diamine)2·H2O]Br complexes: Solvatochromism, crystal structure, physicochemical, Hirshfeld surface thermal, DNA/binding, antitumor and antibacterial activities. Ultrason Sonochem. 2018 Nov;48:1-10 Authors: Warad I, Awwadi FF, Abd Al-Ghani B, Sawafta A, Shivalingegowda N, Lokanath NK, Mubarak MS, Ben Hadda T, Zarrouk A, Al-Rimawi F, Odeh AB, Barghouthi SA Abstract Two new hydrated monocationic Cu(II) complexes with 1,3-propylenediamine and 1,2-ethylenediamine of general formula [CuBr(N-N)2·H2O]Br were prepared. The complexes were identified...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Warad I, Awwadi FF, Abd Al-Ghani B, Sawafta A, Shivalingegowda N, Lokanath NK, Mubarak MS, Ben Hadda T, Zarrouk A, Al-Rimawi F, Odeh AB, Barghouthi SA Tags: Ultrason Sonochem Source Type: research

A novel ultrasonic-assisted method for enhanced yield of light oil in the thermal cracking of residual oil.
This study has vital significance in predicting and enhancing the performance of thermal cracking on a large scale. PMID: 30080531 [PubMed] (Source: Ultrasonics Sonochemistry)
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Song G, Wang DH, Zhang Z, Liu M, Xu Q, Zhao DZ Tags: Ultrason Sonochem Source Type: research

Ultrasonic pretreatment promotes diacylglycerol production from lard by lipase-catalysed glycerolysis and its physicochemical properties.
The objective of this study was to evaluate the effect of ultrasonic pretreatment on diacylglycerol (DAG) synthesis by lipase-catalysed glycerolysis of lard and to analyse the physicochemical properties of lard-based DAG. The optimal ultrasonic pretreatment conditions were: Rhizomucor miehei (Lipozyme® RMIM)-to-lard ratio 4:100 (W/W), 45 °C for 5 min, and power 250 W. The lard-based DAG samples for 4 h of glycerolysis reactions with ultrasonic pretreatment (named DAG-U) and 11 h of glycerolysis reactions without ultrasonic pretreatment (named DAG-N) had similar DAG contents and were used for further analy...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Zhao X, Sun Q, Qin Z, Liu Q, Kong B Tags: Ultrason Sonochem Source Type: research

Sonochemical reduction of Cr(VI) in air in the presence of organic additives: What are the involved mechanistic pathways?
Abstract The sonochemical (850 kHz) reduction of Cr(VI) (0.3 mM, pH 2, reactor open to air) was analyzed in the presence of different additives. The effects on Cr(VI) reduction efficiency of added formic acid (FA, 10 mM), citric acid (Cit, 2 mM), ethylenediaminetetraacetic acid (EDTA, 1 mM), methanol (MeOH, 0.1 M), ethanol (EtOH, 0.1 M), 2-propanol (2-PrOH, 0.1 M), tert-butanol (t-BuOH, 0.1 M), phenol (PhOH, 2 mM) and sodium lauryl sulfate (SLS, 1 mM) have been evaluated in comparison with the system in the absence of additives. Complete Cr(VI) reduction was obtained only when using EDTA (at ...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Meichtry JM, Slodowicz M, Cancelada L, Destaillats H, Litter MI Tags: Ultrason Sonochem Source Type: research

Use of ultrasound irradiation to inactivate Cryptosporidium parvum oocysts in effluents from municipal wastewater treatment plants.
e;z-Couso H Abstract Water reuse is currently considered an innovative way to addressing water shortage that can provide significant economic, social and environmental benefits, particularly -but not exclusively- in water deficient areas. The potential transmission of infectious diseases is the most common concern in relation to water reclamation. Cryptosporidium is an important genus of protozoan enteropathogens that infect a wide range of vertebrate hosts, including humans. The infective form (oocyst) is highly resistant to the environmental conditions and disinfection treatments. Consequently, Cryptosporidium i...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Abeledo-Lameiro MJ, Ares-Mazás E, Goméz-Couso H Tags: Ultrason Sonochem Source Type: research

Sonochemical synthesis and properties of two new nanostructured silver(I) coordination polymers.
Abstract Two new Ag(I) coordination polymers (CPs), namely, Ag(L)(Htp) (1) and [Ag(L)]·(Htp)·2H2O (2) were synthesized from the long flexible ligand of 1,6-bis(2-methylbenzimidazolyl)hexane (L), terephthalic acid (H2tp) and different silver(I) salts using hydrothermal and sonochemical methods, These CPs were characterized by elemental analysis, IR spectra, scanning electron microscopy, single-crystal and powder X-ray diffraction analysis. 1 features a uninodal 3-connected 2D hcb layered structure, while 2 exhibits an infinite 1D linear chain and ultimately extended into 3D supramolecular framework vi...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Li JX, Qin ZB, Li YH, Cui GH Tags: Ultrason Sonochem Source Type: research

Depth effect on the inertial collapse of cavitation bubble under ultrasound: Special emphasis on the role of the wave attenuation.
Abstract Acoustic cavitation concentrates and releases a very large amount of energy in localized areas, which can be used for many physical and chemical processes. Even though acoustic cavitation has been studied widely for decades in lab-scale sonoreactors, only few studies have been devoted to characterize this event in big-scale sonoreactors, where the liquid depth may have a critical influence on the bubble collapse. The present computational study furnished numerical data about the effect of depth (z = 0-10 m) on acoustic cavitation with special focus on the role of attenuation of the ultrasound wave o...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Kerabchi N, Merouani S, Hamdaoui O Tags: Ultrason Sonochem Source Type: research

Combining pressurized liquids with ultrasound to improve the extraction of phenolic compounds from pomegranate peel (Punica granatum L.).
Abstract The combination of ultrasound and pressurized liquid extraction (UAPLE) was evaluated for the extraction of phenolic compounds from pomegranate peels (Punica granatum L.). The influence of several variables of the process on extraction yield, including solvent type (water, ethanol + water 30, 50 and 70% v:v), temperature (50-100 °C), ultrasound power (0-800 W at the generator, or 0-38.5 W at the tip of the probe), mean particle size (0.68 and 1.05 mm), and number of cycles (1-5), were analyzed according to the yield of 20 different phenolic compounds. The most suitable temperatures for the...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Sumere BR, de Souza MC, Dos Santos MP, Bezerra RMN, da Cunha DT, Martinez J, Rostagno MA Tags: Ultrason Sonochem Source Type: research

Synergistic effect between ultrasound and fierce mechanical activation towards mineral extraction: A case study of ZnO ore.
In this study, as a novel mechanical activation style, bead milling (BM) was presented and ZnO ore was selected to determine its effectiveness. Results showed that median particle size of ZnO ore could be pulverized to as low as 1/164 of its original value (from ∼29.2 μm to ∼178 nm), indicating much higher activation potential of BM than that of conventional ball milling. Besides, structure destruction, even phase transformation with the direct participation of airborne CO2 occurred. All these processes rendered the superior activation capacity of BM. In view of the extraction promotion, the combination of u...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: He H, Cao J, Duan N Tags: Ultrason Sonochem Source Type: research

Optimized removal of natural organic matter by ultrasound-assisted coagulation of recycling drinking water treatment sludge.
Abstract In previous work we have shown that recycling pre-sonicated drinking water treatment sludge (DWTS) could improve coagulated water quality. Here, the removal of naturally occurring organic matter of source water was further optimized using response surface methodology (RSM) with Box-Behnken Design (BBD). The four variables, i.e., volumetric recycling ratio of DWTS, energy density, ultra-sonication time and duty cycle in an experimental jar test of ultrasound assisted flocculation-coagulation were optimized. All the variables showed a significant effect on dissolved organic carbon (DOC) removal of source water (p 
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Zhou Z, Yang Y, Li X, Li P, Zhang T, Lv X, Liu L, Dong J, Zheng D Tags: Ultrason Sonochem Source Type: research

Research on the techniques of ultrasound-assisted liquid-phase peeling, thermal oxidation peeling and acid-base chemical peeling for ultra-thin graphite carbon nitride nanosheets.
Abstract Graphite phase carbon nitride (g-C3N4) composite structure materials, as a kind of stable compound with graphite-like structure, has attracted more and more attention due to its excellent properties, such as being able to absorb solar energy, stable chemical and optical properties and having a suitable oxidation potential. However, its application in the field of photocatalysis is limited by its small specific surface area and poor dispersibility. To solve this problem, ultra-thin g-C3N4 nanosheets are often prepared using peeling methods. In this paper, the current status and mechanism of thermal oxidati...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Cui J, Qi D, Wang X Tags: Ultrason Sonochem Source Type: research

Structural, morphological and thermal properties of nanocomposites poly(GMA)/clay prepared by ultrasound and in-situ polymerization.
Abstract This work focuses on the preparation and characterization of nanocomposites poly(glycidylmethacrylate)/organoclay. Effect of the organoclays nature and the preparation method were investigated in order to evaluate their structural, morphological and thermal properties. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nitrogen sorption at 77 K, scanning and transmission electronic microscopy (SEM, TEM) and thermogravimetric analysis (TGA) were employed to determine the features of the obtained materials. In the first step, the Algerian clay was modified by ultrasonic-assisted meth...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Cherifi Z, Boukoussa B, Zaoui A, Belbachir M, Meghabar R Tags: Ultrason Sonochem Source Type: research

Easy fabrication of poly(butyl acrylate)/silicon dioxide core-shell composite microspheres through ultrasonically initiated encapsulation emulsion polymerization.
In this study, instead of using the usual chemical methods, poly(butyl acrylate)/silicon dioxide (PBA/SiO2) core-shell composite microspheres were prepared using a physical method-ultrasonically initiated encapsulation emulsion polymerization. The morphology and particle size of the PBA/SiO2 microspheres were analysed using transmission electron microscopy (TEM) and dynamic light scattering (DLS). The encapsulation state was determined using X-ray photoelectron spectroscopy (XPS). The composition and thermogravimetric behavior were characterized using Fourier transform infrared spectroscopy (FTIR) and thermogravimetric ana...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Guo S, Wang X, Gao Z, Wang G, Nie M Tags: Ultrason Sonochem Source Type: research

Ultrasound-assisted synthesis of NiFe- layered double hydroxides as efficient electrode materials in supercapacitors.
Abstract Under ultrasound irradiation, NiFe-layered double hydroxide (NiFe-LDH) nanostructures with three molar ratios and three dissimilar reaction times were prepared. The powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Fourier transform infrared spectroscopy (FT-IR) were employed to characterize the synthesized nanomaterials. Using a sonochemichal route, various morphologies of the NiFe-LDH nanostructures without any impurity and variations in the structure were produced. During the optimization process, it was found that sonication time and reagent concentration in a f...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Sanati S, Rezvani Z Tags: Ultrason Sonochem Source Type: research

Wetting mechanism of Sn to Zr50.7Cu28Ni9Al12.3 bulk metallic glass assisted by ultrasonic treatment.
Abstract In this work, pure Sn was used to wet Zr50.7Cu28Ni9Al12.3 bulk metallic glasses (BMGs) assisted by ultrasonic treatment. Without ultrasonic treatment, pure Sn showed a non-wetting condition to BMG. Ultrasonic vibration facilitated the wetting of Sn to BMG. Prior to ultrasonication for 30 s, only physical adsorption formed at the Sn/BMG interface. Increasing ultrasonic time led to the alteration of the bond at the Sn/BMG interface from point contact to local surface contact, and to diffusion layer. Two bonding modes of order-order and order-disorder were discovered at the Sn/BMG interface. Cu content was...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Xu Z, Li Z, Zhong S, Ma Z, Yan J Tags: Ultrason Sonochem Source Type: research

Characterisation of flow behaviour and velocity induced by ultrasound using particle image velocimetry (PIV): Effect of fluid rheology, acoustic intensity and transducer tip size.
Abstract Acoustic streaming phenomena of ultrasound propagation through liquid media was investigated experimentally employing particle image velocimetry (PIV). Parameters associated with the ultrasonic processor of ultrasonic amplitude (i.e., acoustic power) and transducer tip diameter (i.e., surface area), as well as, fluid rheology (i.e., water, glycerol solution and CMC solution), were studied for their effects on overall flow behaviour and fluid velocity. PIV yielded velocity gradient maps, demonstrating the acoustic streaming phenomena of ultrasound and its associated flow behaviour as a function of ultrason...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: O'Sullivan JJ, Espinoza CJU, Mihailova O, Alberini F Tags: Ultrason Sonochem Source Type: research

Extraction of proteins from microalgae using integrated method of sugaring-out assisted liquid biphasic flotation (LBF) and ultrasound.
In this study, a simple sugaring-out supported by liquid biphasic flotation technique combined with ultrasonication was introduced for the extraction of proteins from microalgae. Sugaring-out as a phase separation method is novel and has been used in the extraction of metal ions, biomolecules and drugs. But, its functioning in protein separation from microalgae is still unknown. In this work, the feasibility of sugaring-out coupled with ultrasound for the extraction of protein was investigated. Primary studies were carried out to examine the effect of sonication on the microalgae cell as well as the separation efficiency o...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Sankaran R, Manickam S, Yap YJ, Ling TC, Chang JS, Show PL Tags: Ultrason Sonochem Source Type: research

Investigation on ultrasonic volume effects: Stress superposition, acoustic softening and dynamic impact.
Abstract Conventional high power ultrasonic vibration has been widely used to improve manufacturing processes like surface treatment and metal forming. Ultrasonic vibration affects material properties, leading to a flow stress reduction, which is called ultrasonic volume effect. The volume effect contains multi-mechanisms such as stress superposition due to oscillatory stress, acoustic softening by easier dislocation motion and dynamic impact leading to extra surface plastic deformation. However, most researches ignored the stress superposition for the convenience of measurement, and few studies considered ultraso...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Hu J, Shimizu T, Yang M Tags: Ultrason Sonochem Source Type: research

Ultrasound- and microwave-assisted convective drying of carrots - Process kinetics and product's quality analysis.
Abstract The aim of these studies was to investigate the influence of airborne ultrasound-assisted convective drying and microwave-assisted convective drying, as well as their combination, on process kinetics, total color change, water activity, content of carotenoids, polyphenols and antioxidant activity of carrots (Daucus carota L.). The global model of drying kinetics based on coupled ordinary differential equations was used to describe the moisture and material temperature profiles during drying. Application of ultrasound and microwave in convective drying reduced drying time in the range of 9-81%, but the sho...
Source: Ultrasonics Sonochemistry - August 8, 2018 Category: Chemistry Authors: Kroehnke J, Szadzińska J, Stasiak M, Radziejewska-Kubzdela E, Biegańska-Marecik R, Musielak G Tags: Ultrason Sonochem Source Type: research