Ron Jimdar posted this:
DIT Hothouse posted this:Wind Urchin: A 3D Spherical AnemometerThe Wind Urchin is a novel instrument for the simultaneous measurement of wind speed, direction and turbulence. It is effectively a multidirectional anemometer which uses multiple Pitot tubes incorporated into a unique spherical design to provide simultaneous real-time data on all elements of wind and uniquely turbulence.
Universidad de Alicante posted this:Sustainable production of biofuel (bioethanol) from shellfish wasteThe research group of Plant Pathology at the University of Alicante has developed a new process by using fungi to produce biofuel (bioethanol) and fungal biomass for agrobiotech use from shellfish waste. It is a sustainable alternative to agroforestry crops currently used. The current technology stands out because it uses chitosan as the sole source of nutrients, and produces bioethanol in profitable, sustainable and environmentally friendly manner. The research group is looking for companies or investors partners interested in acquiring this technology for commercial exploitation.
Universidad de Alcalá-OTRI posted this:Controller and communication system development for grid-converters applied to power quality and renewable energies.The research group "Electronic engineering applied to renewable energy systems", has developed controllers and communications systems for power electronic converters that operate as an interface to the power supply systems in order to improve power quality, to facilitate the efficient use of energy and to impulse the expansion of smart grids. The group is looking for technical cooperation agreements.
Universidad de Alicante posted this:New family of dyesThe main innovative aspects of this technology regarding current methods of synthesis are: • The indolizine dyes are obtained in one step from commercially available materials, unlike current procedures, which involve multiple steps. This is an advantage in the production process, as it reduces costs, increases the final yield and less waste is generated. • The procedure is based on a very simple treatment which produces indolizine dyes in yields higher than 70%. • The present invention does not require the use of inert atmosphere, dry solvents or physical activation (heat or radiation) to obtain the final product. • Unlike other methodologies for preparing indolizine dyes (requiring temperatures around 100°C), this process is carried out at room temperature and atmospheric pressure, which simplifies the method and decreases production costs. • This is an environmentally friendly technology because it does not use solvents such as dioxane, pyridine, chloroform or benzene, which are used in other methods and are characterized by their high toxicity and demonstrated carcinogenicity. • The selectivity of the reaction is very high. The indolizine dye is obtained with absolute control, obtaining a single isomer of the ten possible.
Universidad de Cádiz posted this:Pre-treatment of lignocellulosic biomass for the production of second-generation bioethanol• The action of the alkaline peroxide at moderate concentrations has been combined in one single stage. • The reaction times are short and the operating temperature is moderate. • The accessibility of the polysaccharides to the subsequent enzymatic attack is improved. • Hydrolysis yields of close to 100% are obtained. • Added value can be obtained from agricultural wastes rich in lignocellulose. • Low cost of implementation. • Simplicity of design.
Universidad de Cádiz posted this:New process for using beer bagasse (spent brewers grain) to obtain raw materials for the production of biofuelsCurrently, considerable quantities of lingo-cellulosic residues are generated continuously in many sectors of the agro-food industry. If these can be suitably processed, they are of great commercial interest to industry as potential raw materials for the production of biofuels and a variety of other high value-added products. The residual biomass of the agro-food industry typically has a high content in lipids, carbohydrates, proteins and other compounds of industrial interest. The only limitations to its use as a precursor of biofuel are the economic viability of the process for obtaining these precursors and their quality. One of the byproducts of special interest for this application is spent beer grain, also known as bagasse; given the existing lack of commercial value, this bagasse is widely available as a low-cost raw material. Currently, the principal application of bagasse is as feedstuff for livestock. In general, bagasse does not represent a source of income for breweries, and the reason why it is sold is to minimize the associated problems of waste management and disposal. The UCA research group on "Allelopathy in Higher Plants and Microorganisms" (FQM- 286) has developed an acid hydrolysis procedure whereby precursor materials for biofuels and other high -value-added products are obtained from beer bagasse. Its content in lipids and food fibre (equal to or more than 5% and 20%, dry weight, respectively), make it an ideal material for this application. This would represent a more attractive commercial outlet for many of the residues resulting from operations of the agro-food industry, and in particular, for beer bagasse. The object of the process is to obtain two different products. The first is an oil consisting mainly of the fats contained in the bagasse; the second is a substance rich in sugars or molasses. The oil is of interest as raw material for the production of biodiesel by the process of transesterification; the molasses can be employed as raw material for the production of bio-ethanol by means of fermentation. Molasses can also be formulated as sugar, after a crystallization process. The oil would be particularly useful for correcting the viscosity of biodiesel, thus achieving the optimum parameters for its use as biofuel. In outline, the process developed by the research group consists of a principal line, in which a series of operations take place for the conditioning of the bagasse, such as milling, extraction of lipids and the separation of the resulting solids. Downstream, this line divides into two secondary lines: in one line, for production of oils, the solvents from the prior extraction stage are separated out; in the other secondary line, for the production of molasses, an acid hydrolysis of the sugars is carried out. Another significant feature is that the optimum operating mode of the process is continuous operation, although batch loading is also accepted.
Universidad de Cádiz posted this:New procedure for the elimination of nutrients from waste waters by photobiotreatment with microalgasUCA researchers have developed a new process for the treatment of waste waters by using microalgae, specifically for the removal of nitrogen and phosphorus. This process is based on applying three fundamental findings made by the research group: • Before the microalgae start to grow, they are already consuming nitrogen and phosphorus when cultivated in waste waters. • The microalgae accumulate nutrients internally in such a way that the assimilation of nutrients commences before the growth phase, and at a rate that is considerably faster than the rate during the generation of biomass. • The initial elimination of nutrients prior to the growth of biomass takes place at a similar rate both in darkness and in the presence of light. To exploit this phenomenon, a procedure has been designed in which the two phases take place separately in two reactors: the first phase for elimination of nutrients from the waste water in darkness (known as ‘luxury uptake’) and the second for the growth of biomass under illumination. What this achieves is not only the efficient removal of the nutrients from the waste water but also, by means of a simple change of the mode of operation of the process, nutrients can be eliminated at night using the excess of biomass generated during daylight hours. To implement this advance, the research group has conceived a process for the separation of the biomass from the culture medium in both phases, by means of membrane technologies. The treatment plant can operate with cellular retention times very much longer than the hydraulic residence times. This, in turn, allows the same flow volumes of waste water to be treated in smaller reactors. • It enables waste waters to be treated at night without the need for a luminous phase. This cannot currently be done with the processes that employ existing photosynthetic organisms. • Simplicity of operation and reduction of costs in comparison with conventional technologies. It avoids the production of more solid residues, i.e. sludges, which require disposal. • The use of microalgae allows the treatment of waste waters with high levels of nitrogen and phosphorus but low content of organic matter (a characteristic of the waste waters of steelworks), since autotrophic organisms are involved. Thus the proposed process avoids the need to add organic matter from an external source, as is the case of other biological processes. • With the possibility of generating energy and capturing CO2, the biomass generated in the process represents value added in terms of energy consumption and environmental protection
Universidad de Alicante posted this:Novel photobioreactor for mass cultivation of microalgaeThe main innovation of this invention is: • This novel photobioreactor combines the mechanism of a bubble column with the air-lift type for higher biomass production than that obtained for both systems separately.
Universitat de València posted this:Nitrogen removal control system based on low-cost sensorsThis control system allows optimization of the activated sludge process since maintains effluent nitrogen concentration under limit values with minimum energy consumption. The most remarkable advantages provided by this technology are: Cost reduction of initial investment and maintenance Easier operation than nutrient analysers Lower time response Lower aireation energy consumption Lower pumping energy consumption
Universitat de València posted this:Nanocomposites for electrochemical supercapacitorsThe new materials have the following advantages over existing materials in supercapacitor’s sector: Supercapacitive properties: they have specific capacitance values much higher than those obtained by commercial nanostructured carbon electrodes. Low cost: obtained by a chemical process of a single stage, with a single precursor, at low temperature, and highly available, non-polluting and low cost materials. Good cyclability: testing in cyclability is promising in terms of electrochemical and mechanical stability. In parallel to its advantages as supercapacitors, the nanocomposites show the advantages associated with the following additional properties: Giant magnetoresistance, GMR: this property is observed at room temperature, and high magnetic fields are not needed. Source of carbon nanoforms: based on the nanocomposite, can be obtained a mixture of carbon nanoforms consisting of nano-onions and multi-walled nanotubes.
Universitat de València posted this:Magnetic In-Tube Solid Phase MicroextractionThe device has the following advantages over existing equipment: Allows quantitative extraction efficiency, solving one of the main drawbacks of IT-SPME systems Broadens applicability of IT-SPME thus making available its advantages (automation, precision) to specific analyses that require high sensitivity of analytes estimation.
Universitat de València posted this:Passive sensor for in situ detection of amines in atmospheres Simplicity and ease of use: it is a passive colorimetric sensor that does not require any kind of pretreatment or power supply or external instrument. Low cost: simple fabrication process without high costs Low detection limits: suitable for use in real atmospheres, of the order of 3 mg/m3. Quantitative detection: direct quantitative detection can be carried out by diffuse reflectance of the sensors. Stability: against a wide range of temperatures and to humidity and solar radiation. Reversion resistance.