Showing papers in "Ultrasonics Sonochemistry in 2015"

TL;DR: Combination of microwave, ultrasound and the recycled "in situ" water of citrus peels allow us to obtain high added values compounds in shorter time and managed to make a closed loop using only natural resources provided by the plant which makes the whole process intensified in terms of time and energy saving, cleanliness and reduced waste water.

TL;DR: The result showed good reusability of the synthesized sonocatalyst, indicating that the controlling mechanism of sonochemical degradation of AR17 is the free radicals (not pyrolysis).

TL;DR: An overview of recent developments in ultrasonic processing of food and dairy systems with a particular focus on functionality ofFood and dairy ingredients and the use of low frequency ultrasound in generating nutritional food emulsions, viscosity modification and encapsulation of nutrients is provided.

TL;DR: This research presents a physical method to modify lignin by ultrasonic irradiation in order to obtain nanoparticles and confirms that the compositional and structural changes of nanoparticles obtained are not significantly modified at the intensity applied but depend on the nature of lignIn.

TL;DR: Results indicate that an important quantity of bioactive compounds can be extracted from spruce wood bark by ultrasound assisted extraction technology.

TL;DR: According to the results, the acoustic assistance of the extraction process led to aqueous extracts with phenolic and antioxidant characteristics similar to those obtained with mechanical stirring, working under lower temperature conditions and during less operating time.

TL;DR: The present study estimates the prediction capability of response surface methodology (RSM) and artificial neural network (ANN) models for biodiesel synthesis from sesame (Sesamum indicum L.) oil under ultrasonication using barium hydroxide as a basic heterogeneous catalyst.

TL;DR: It was found that the reduction of particle size was related to the increase of foaming capacity of SPI, and the invariable elasticity of the interfacial films could explain the stability of foams over time.

TL;DR: Gd-doped ZnO nanoparticles can be used as a promising catalyst for degradation of organic pollutants with great reusability potential and decolorization efficiency decreased only 6% after 4 repeated runs.

TL;DR: Three level, three variable face-centered cubic experimental design with response surface methodology (RSM) was used for optimization of extraction in terms of maximized yields for total phenolics (TP), flavonoids (TF), anthocyanins (MA) and proanthocyanidins (TPA) contents.

TL;DR: Multi-frequency power ultrasound pretreatment is an efficient method in protein proteolysis due to its sonochemistry effect on the molecular conformation as well as on the microstructure of protein.

TL;DR: The obtained results indicated that the sonocatalytic activity of TiO2/MMT nanocomposite was higher than that of pureTiO2 nanoparticles and MMT particles.

TL;DR: This study demonstrates that ultrasound assisted extraction (UAE) can be employed to enhance extraction of bioactive compounds from seaweed.

TL;DR: An overview of recent developments related to the application of ultrasound in low temperature and closely related processes such as freezing, thawing, freeze concentration and freeze drying is provided.

TL;DR: Images obtained by field emission scanning electron microscopy showed that the action of ultrasonic waves did not cause cracks on the cell wall surface, and ultrasound promoted disturbances in the vegetable matrix, leading to the release of extractable material on the solid surface.

TL;DR: It was proved that ultrasound significantly enhanced SMX ozonation by assisting ozone in producing more hydroxyl radicals in UOOP by assisting the cleavage of S-N bond.

TL;DR: The ANN model was more precise compared to the RSM model and it showed that, ANN is to be a powerful tool for modeling and optimizing FAME production.

TL;DR: In this paper, an ultrasound-assisted extraction of flaxseed phenolic compounds was investigated, which revealed the deep alteration of the seedcoat ultrastructure and the release of the mucilage following ultrasound treatment.

TL;DR: The ultrasound-assisted extraction (UAE) of anthocyanins from haskap berries was investigated and it was found that this technique is a suitable technique for the extraction of Anthocyanin from hasKap berries.

TL;DR: The present work has clearly established the usefulness of ultrasound based treatment in maintaining the nutritional quality of beverages while giving enhanced shelf life as compared to the conventional approaches.

TL;DR: The present work highlights the novel approach of combination of hydrodynamic cavitation and advanced oxidation processes for wastewater treatment by investigating degradation of triazophos pesticide in aqueous solution and the impact of different operating parameters like inlet pressure and initial pH.

TL;DR: Information is provided regarding the formation of ultrasound-assisted polymeric nanocapsules from the nanoemulsion templates which could be helpful in the development of delivery systems for lipophilic food bioactives.

TL;DR: It was concluded that, in addition to the gas solubility, the nature of the internal bubble chemistry is another parameter of a paramount importance that controls the overall sonochemical activity in aqueous solutions.

TL;DR: Synthesized nanoparticles was found to be a magnetic and heterogeneous catalyst for a one-pot and efficient synthesis of 2-amino-4H-chromenes by condensation of aldehydes with malononitrile and resorcinol under ultrasound irradiation as an ecofriendly method.

TL;DR: The results suggest that the combined use of ultrasound and molecular sieves greatly improve esterification reactions by stabilizing the enzyme and increasing yields.

TL;DR: The S-TiO2 sonophotocatalysis system was studied for the first time for dye degradation and was found practicable, efficient and cost effective for the degradation of complex and resistant dyes such as RB19.

TL;DR: The disintegration of raw sludge is very important for enhancement of the biogas production in anaerobic digestion process as it provides easily degradable substrate for microorganisms to perform maximum sludge treatment efficiency and stable digestion of sludge at lower costs.

TL;DR: Good particle dispersion, smaller aggregate sizes, and higher zeta potentials were observed at 3 and 5h of ultrasonication duration for the 50% and 25% of sonicator power amplitudes, respectively.

TL;DR: In biodiesel production from chicken fat, when increasing the catalyst concentration up to 1%, the oil-to-biodiesel conversion percentage was first increased and then decreased, and the reaction time was decreased, which makes the ultrasonic method superior.

TL;DR: The results showed that tri-potassium phosphate exhibits high catalytic activity for the transesterification of waste cooking oil and higher yield was obtained in the presence of ultrasound as compared to conventional approach under otherwise similar conditions, which can be attributed to the cavitational effects.