Patricio Aníbal Sorichetti
Bio: Patricio Aníbal Sorichetti is an academic researcher from University of Buenos Aires. The author has contributed to research in topics: Permittivity & Relative permittivity. The author has an hindex of 13, co-authored 62 publications receiving 565 citations.
Papers published on a yearly basis
30 Nov 2010
TL;DR: In this article, complex permittivity spectra of biodiesel and DF from 20 Hz to 20 MHz were presented, in a range of temperatures from 25 to 75°C, with an accuracy of ± 0.1 ∘ C.
TL;DR: In this article, the authors measured the electrical properties of vegetable oils in the frequency range from 20 Hz to 2 MHz and found that the real part of the relative permittivity decreases with temperature, with a very good fit to a linear function.
TL;DR: In this paper, a low-cost interface for dielectric measurements with pulsed or time-harmonic excitation is described, covering the frequency range from 30 Hz to 15 MHz.
TL;DR: In this article, the physical and the chemical parameters relevant to the production process of Biodiesel were optimized, and the results were in good agreement with the reference values in applicable standards and in the literature.
Abstract: Biodiesel (BD) is a renewable fuel used in diesel engines as a replacement of Diesel Fuel or in blends. Biodiesel was obtained by a transesterification reaction between used frying oils and methanol, using sodium hydroxide as a catalyst. The oils were treated to eliminate water, thus avoiding the formation of soaps during the chemical reaction. The physical and the chemical parameters relevant to the production process were optimized. Particular care was taken during the washing process of Biodiesel. Viscosity, density, electrical properties and refractive index of the Biodiesel were measured at the successive stages of the washing process, together with the electrical properties and pH of the effluents. In order to characterize the final product, calorific value and flash point were also measured. The results are in good agreement with the reference values in applicable standards and in the literature.
TL;DR: In this article, a fast Fourier transform method of topography and interferometry is proposed to discriminate between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour generation techniques.
Abstract: A fast-Fourier-transform method of topography and interferometry is proposed. By computer processing of a noncontour type of fringe pattern, automatic discrimination is achieved between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour-generation techniques. The method has advantages over moire topography and conventional fringe-contour interferometry in both accuracy and sensitivity. Unlike fringe-scanning techniques, the method is easy to apply because it uses no moving components.
TL;DR: In this paper, the authors provide an overview of the rapidly developing field of photoacoustic imaging, which is a promising method for visualizing biological tissues with optical absorbers, compared with optical imaging and ultrasonic imaging.
Abstract: Photoacoustic imaging is a promising method for visualizing biological tissues with optical absorbers. This article provides an overview of the rapidly developing field of photoacoustic imaging. Photoacoustics, the physical basis of photoacoustic imaging, is analyzed briefly. The merits of photoacoustic technology, compared with optical imaging and ultrasonic imaging, are described. Various imaging techniques are also discussed, including scanning tomography, computed tomography and original detection of photoacoustic imaging. Finally, some biomedical applications of photoacoustic imaging are summarized.
TL;DR: In this article, the authors have collected and analyzed the data on both advantages and disadvantages of biodiesel over conventional diesel, and the highest consensus is related to enhanced corrosion of automotive parts due to its compositional differences.
Abstract: Biodiesel, derived from the transesterification of vegetable oils or animal fats, is composed of saturated and unsaturated long-chain fatty acid alkyl esters. In spite of having some application problems, recently it is being considered as one of the most promising alternative fuels in internal combustion engine. From scientific literatures, this paper has collected and analyzed the data on both advantages and disadvantages of biodiesel over conventional diesel. Since the aim of this study is to evaluate the biodiesel feasibility in automobiles, the first section is dedicated to materials compatibility in biodiesel as compared to that in diesel. The highest consensus is related to enhanced corrosion of automotive parts due to its compositional differences. In the subsequent sections, data on performance, emission and engine durability have been analyzed and compared. In this case, the highest consensus is found in reducing emissions as well as in increasing moving parts sticking, injector coking and filter plugging. This paper has also summarized the factors of biodiesel in contributing these technical performances.
TL;DR: In this paper, a review of 1660 patents related to biodiesel production were reviewed and grouped into five categories depending on whether they related to starting materials, pre-treatment methods, catalysts, reactors and processing methods or testing methods.
Abstract: Biodiesel is a renewable fuel made from vegetable oils and animal fats. Compared with fossil fuels, it has the potential to alleviate environmental pressures and achieve sustainable development. In this paper, 1660 patents related to biodiesel production were reviewed. They were published between January 1999 and July 2018 and were retrieved from the Derwent Innovation patent database. The patents were grouped into five categories depending on whether they related to starting materials, pre-treatment methods, catalysts, reactors and processing methods, or testing methods. Their analysis shows that the availability of biodiesel starting materials depends on climate, geographical location, local soil conditions, and local agricultural practices. Starting materials constitute 75% of overall production costs and, therefore, it is crucial to select the best feedstock. Pre-treatment of feedstock can improve its suitability for processing and increase extraction effectiveness and oil yield. Catalysts can enhance the solubility of alcohol, leading to higher reaction rates, faster biodiesel production processes, and lower biodiesel production costs. Moreover, the apparatus and processes used strongly affect the oil yield and quality, and production cost. In order to be commercialized and marketed, biodiesel should pass either the American Society for Testing and Materials (ASTM) standards or European Standards (EN). Due to increases in environmental awareness, it is likely that the number of published patents on biodiesel production will remain stable or even increase.
TL;DR: In this paper, the use of palm oil, its by-products, and mill effluent for biodiesel production is discussed. And the authors discuss the properties of biodiesel, the difference between palm-biodiesel and other biodiesel sources, and the feasibility of using palm oil as a primary source for future alternative and sustainable energy sources.
Abstract: The sustainability of petroleum-based fuel supply has gained broad attention from the global community due to the increase of usage in various sectors, depletion of petroleum resources, and uncertain around crude oil market prices. Additionally, environmental problems have also arisen from the increasing emissions of harmful pollutants and greenhouse gases. Therefore, the use of clean energy sources including biodiesel is crucial. Biodiesel is mainly produced from unlimited natural resources through a transesterification process. It presents various advantages over petro-diesel; for instance, it is non-toxic, biodegradable, and contains less air pollutant per net energy produced with low sulphur and aromatic content, apart from being safe. Considering the importance of this topic, this paper focuses on the use of palm oil, its by-products, and mill effluent for biodiesel production. Palm oil is known as an excellent raw material because biodiesel has similar properties to the regular petro-diesel. Due to the debate on the usage of palm oil as food versus fuel, extensive studies have been conducted to utilise its by-products and mill effluent as raw materials. This paper also discusses the properties of biodiesel, the difference between palm-biodiesel and other biodiesel sources, and the feasibility of using palm oil as a primary source for future alternative and sustainable energy sources.