University of Huelva posted this:New procedure for the purification of water contaminated by metals and the respective systemsThe invention solves the problems of inefficiency which usually shows the conventional passive treatment systems. The reactive fills developed for the removal of inorganic contaminants historically have focused on removing low concentrations of these (typical features of coal mining), however when these fillers are faced to high concentrations of metals (sulfur mining, uranium, industrial water waste…) quickly clogging and loss of reactivity occurs. The present invention allows the removal of metals without clogging and/or loss of reactivity. This is achieved by the use of a coarse inert material with high surface mixed with a fine-grained reactive material, so that the surface of the inert material is breaded with reactive material. Coarse fragments of inert material act as a frame, providing large pores that reduces clogging by precipitates. The small particle size of the reactive material provides a large surface area that increases its reactivity.
UATEC - Unidade de Transferência de Tecnologia posted this:Process for converting waste, effluents and organic by-products in recyclable materialsA group of researchers from a Portuguese university has developed a biological process to treat waste, effluents and organic by-products with industrial origin characterized by high biodegradability that adds value to conventional biological treatment processes, integrating their assumptions on the concept of biorefinery. The invention aims to reduce by 96% the organic matter content of the starting substrate allowing generally meet the discharge criteria set out in the legislation.
Cracow University of Technology posted this:New way of detection Cryptosporidium and Giardia protozoa.Advantages of the technology: - Our method is sensitive, reproducible, species-specific and inexpensive way to detect Cryptosporidium sp. oocysts ad Giardia intestinalis cysts in various environmental samples. - There is not necessary to use highly specialized and expensive equipment. All the materials for realizing the invention (chemical reagents and equipment etc.) are commercially available. - It is not requirement the use of toxic flammable solvents to ensure the safety of personnel conducting the test. - The use of appropriate materials, allowed to simplify and shorten the work, to improve the reproducibility of detection and reduce the cost of detection procedure. - To achieve sensitive detection method allows subjecting the examination of much smaller volumes of liquid samples in comparison with that provided by the USEPA protocols (United States Environmental Protection Agency).
University of Vigo posted this:Innovative process for the removal of persistent organic pollutants present in wastewater streams.This is the first time that surfactants-based aqueous phase segregation has been proposed for the remediation of aromatic organic pollutants. Up to know, biological degradation was used alone or in combination with other physical and chemical methods (e.g. volatilization, sorption, electrokinetic, oxidation, extraction with supercritical fluids, etc.), that often entail economic and environmental disadvantages. Therefore, the proposed strategy is an environmentally friendly alternative that entails benefits such as low energy consumption, low cost, availability of reagents at bulk quantities and easy implementation.
University of Vigo posted this:New sustainable adsorbent for bleaching efficient industrial effluentsMany industries, such as those belonging to the textile, wine, and paper industry, consume huge volumes of water and, as a result, generate a large amount of contaminated water containing persistent colour pollutant compounds. These compounds represent an environmental and health threat due to their well-known associated problems, such as carcinogenicity, toxicity and mutagenicity. Furthermore, they entail a great environmental impact when discharged in aquatic environments, perceptible at very low concentrations, creating an undesirable visual impact, which, in many cases, does not meet the degree of conformity under the current directives on the wastewater treatment for industrial effluents (Directive 91/271 / EEC). The solution proposed by the research group Chemical Engineering at the University of Vigo, is the use as adsorbent of peat, or a similar lignocellulosic material, immobilized in calcium alginate beads. This process is efficient, cheap and environmentally friendly, unlike other processes and technologies. In fact, the utilization of peat instead of activated carbon as industrial adsorbent has the advantage that peat requires no activation, unlike activated carbon, reducing operating costs. In addition, the low cost of the adsorbent would be translated into significant economic benefits. Moreover, depending on the contaminant removed from the waste effluent, the exhausted adsorbent may be used as soil fertilizer at its end of life.
IMDEA Water Institute posted this:Treatment of water from bentonite slurryWhy Does Water From Slurry Require Treatment? The problem arises once the slurry is used and subjected to the separation process by applying a filter press, in order to reuse the water to generate new slurry. The water, due to the loss of quality it suffers during the construction process, interferes with the proper functioning of bentonite, forming an unstable slurry, which tends to flocculate, and thus loses the necessary properties for application. Processing these waters entails a considerable environmental improvement, in addition to cutting operating costs by reducing water consumption and the dumping of effluent which, due to the physicochemical characteristics acquired, is not suitable for discharge under current legislation.
IMDEA Water Institute posted this:Membrane technology and Transformation of disposed reverse osmosis membranes into recycled membranesMembrane technology is the generic term used for any separation process in which membranes are employed. A membrane can be defined as a physical barrier separating two phases and allowing a selective transition of compounds from one phase to the other. The part that goes through the membrane is the permeate and the part that is rejected by the membrane is the retentate (Figure 1, Membrane technology separation scheme). Membrane technology can be applied for purposes such as: • Water purification: undesired impurities are removed from the solution. For example: soft water production by removal of calcium and magnesium cations • Concentration: required components are present at a low concentration and the solvent is removed. For example: concentrating fruit juice by removing water • Fractionation: a mixture must be separated into two or more desired components. For example: milk fractionation in the dairy industry Membranes can be classified depending on the compounds that membranes are able to separate (Figure 2, pressure driven membranes).
UATEC - Unidade de Transferência de Tecnologia posted this:Biopolymer based micro- and nanoparticlesA group of researchers from a Portuguese university developed a method for preparing new hybrid materials based on biopolymer and silica, in the form of spherical particles with uniform size and smaller than 1 micrometer for a number of applications in environmental and industrial areas. The method is also effective for coating nanoparticles of variable nature, with a thin shell (tens of nanometers) with composition identical to the hybrids. The materials have been successfully tested in the removal of chemical species in water at laboratory scale, in particular in the removal of organic pollutants dyes and pharmaceutical compounds. Other applications are being considered. The University looks for companies working in the environmental, pharmaceutical or biotechnology areas, or companies in the area of materials for licensing and / or future collaboration in developing new formulations and testing new applications.
UATEC - Unidade de Transferência de Tecnologia posted this:Electrochemical biosensor for the detection and quantification of alkylphenols.A group of researchers from Portuguese university developed a biosensor for the detection and quantification of alkylphenols (AP). This invention constitutes a fast, efficient and accurate method for the quantification of these contaminants, found in items ranging from detergents and pesticides to plastics, textiles and fuels. The apparatus has already been successfully tested in real samples and demonstrated to be faster and more efficient than the commonly used techniques for the quantification of AF, not requiring additional steps, namely, for sample preparation.
Universidad de Alcalá-OTRI posted this:Bioremediation strategy in situ for the precipitation and immobilization of uranium and other toxic elements in contaminated soils.A research group from the Geology Department of the University of Alcalá is developing a technology to study the role of the oxidation-reduction processes of humics in the reduction of uranium and other toxic metals in contaminated soils to determine whether stimulating the activity of humic-reducing and oxidizing microbial communities in contaminated soils can be an effective strategy for the in situ immobilization of uranium and other toxic metals. The group is looking for technical cooperation projects with companies.
Universidad de Alcalá-OTRI posted this:Process and device for an integrated treatment of vegetables wastes from agriculture explotation and wastewater originated.A Spanish research group from the Chemical Engineering Department of Alcalá University has developed a technology for an integrated treatment of vegetable wastes from agriculture exploitations, in which wastes are subjected to an integrated process producing a stable product. This product has less volume and is useful for industrial use. The group is looking for commercial agreements with technical assistance.
Research & Technology Organization
UNIVERSIDAD DE ALICANTE posted this:Stand-alone system for the purification of brackish water directly powered by photovoltaic solar energyThe Applied Electrochemistry and Electrocatalysis Research Group at the University of Alicante has developed an Stand-alone system for the desalination and disinfection of water by Electrodialysis (ED) and the necessary water pre- and post-conditioning steps. The developed system is sustainable and environmentally-friendly being directly powered by a photovoltaic solar plant without using battery racks. This new system substantially decreases both the investment and maintenance costs by eliminating the batteries. Also, it can be adjusted to be used in water from very different sources like seawater, brackish water wells, wastewater treatment plants, industrial processes water, etc. being of particular interest for remote areas isolated from the electric grid. The Research Group has a demonstration Pilot Plant with the capacity to produce up to 1m3 of drinking water per day. The Group is looking for companies interested in the commercial exploitation of this technology through licensing agreements and/or technical cooperation.
UATEC - Unidade de Transferência de Tecnologia posted this:Graphene oxide macrostructure for the removal of heavy metals from contaminated watersA group of researchers at the University of Aveiro developed a graphene based material capable of removing mercury from contaminated water. The invention consists on the functionalization of three-dimensional structures of graphene in order to increase the affinity to mercury, the subsequent encapsulation in a permeable casing facilitate its removal from the aqueous medium. The main advantage of this system lies mainly in their high mercury removal efficiency, ease synthesis process, low cost and the possibility of its application in locations that do not have specific infrastructure.