Consejo Superior de Investigaciones Científicas posted this:Use of immobilized enzymes in the synthesis of biodieselCSIC has developed a process for the enzymatic synthesis of alkyl esters of long chain fatty acids in the presence of an alcohol and an enzymatic preparation with a sterol esterase/lipase covalently immobilized on magnetic particles functionalized on its surface. The process increases the yield of the synthesis of alkyl esters, and allows recovery of the catalyst. The synthesized compounds can be used as biofuel. Industrial partners are being sought to use the technology through a patent licence agreement. An offer for Patent Licensing
Centre Technology Transfer CITTRU posted this:Ecological solid fuel additive, which improve fuel combustion efficiency and decrease soot generation.Solid fuel eco-additive reduces soot production and deposition on chimney walls, flues and boiler installation. Moreover it doesn't cause boiler corrosion. Consequently it improves boiler thermal efficiency and fuel combustion effectiveness. That means lower costs of heating. It also modifies soot to be biodegradable, prevents releasing soot-related pollutions and isn't harmful to human health.
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 Alicante posted this:How to get high added value products for industrial applications from agricultural wastes• The use of cocoa shell as a new lignocelulosic precursor to preparate activated carbon (monoliths) for industrial applications. • In contrast with current procedures used to synthesize activated carbon monoliths, in the present invention, the mounding of precursor is made before the carbonization and activation steps. • Raw material shows self-binder properties, so it is not necessary additional binders or additional steps for consolidation.
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 Cádiz posted this:New specific and optimized culture medium based on glycerine that increases the yield of processes for producing ethanol and hydrogenExploitation of the large amounts of glycerine produced as a by-product of the production of biodiesel and similar industrial processes. The employment of this culture medium increases the production yield of ethanol and hydrogen, in comparison with that obtained from the use of other sources of carbon. The effect of optimizing the culture medium is to reduce the costs and save energy in the industrial-scale fermentation process. No other alternative culture media exist that have been formulated and optimized for E. coli that would allow greater production yields of ethanol to be obtained. It represents a simple and attractive way of producing hydrogen and ethanol from a carbon source of low price and in plentiful supply. The high degree of reduction of the glycerine, in comparison with sugars, allows reduced chemical compounds such as succinate, xylitol, propionate, hydrogen and others to be obtained.