Production process for an eco-friendly construction panel and the resulting eco-friendly panel
Abstract: This invention belongs to the construction technology sector and concerns a process for producing an eco-friendly panel suitable for building walls, partitions, ceilings, and other elements using recycled aseptic beverage cartons, as well as the resulting product. Given the volume of industrial waste, the high production costs, and the substantial consumption of nonrenewable resources associated with existing panels, the invention proposes using beverage cartons as thermal and acoustic insulation instead of polyurethane, rock wool, glass wool, or other materials. Furthermore, the main constituent of its boards is a specially developed layer of lightweight mortar containing a compound obtained by extruding EVA waste and polyurethane-coated textile waste, Portland cement, water, and sand. This produces a monolithic material rather than using gypsum boards. Moreover, because the panel consists of a single block, its assembly is faster and more practical.
Production process for an eco-friendly construction panel and the resulting eco-friendly panel
ViewProcess for obtaining homogeneous cationic membranes for electrodialysis
Abstract: This invention belongs to the field of materials engineering and, more specifically, concerns a process for obtaining homogeneous cationic membranes through sulfonation. These membranes can be used in the treatment of industrial and domestic wastewater and water intended for public supply. The invention provides a new method for preparing homogeneous ion-exchange membranes for assembling electrodialysis equipment. The process essentially consists of sulfonating PPO and subsequently forming films. The patent therefore seeks to address the high cost of homogeneous cation-exchange membranes currently available in the Brazilian market, since no companies in Brazil develop and manufacture these membranes competitively.
Process for obtaining homogeneous cationic membranes for electrodialysis
ViewSeparator and membrane assembly for electrodialysis equipment and its assembly process
Abstract: This invention belongs to the wastewater treatment technology sector and, more specifically, concerns a new method for producing and assembling membrane/flow-separator units (A)(B) for use in electrodialysis reversal (EDR) equipment. To overcome shortcomings in the current state of the art, the proposed invention comprises one flow-separator assembly connected to a cationic membrane (B) and another separator assembly connected to an anionic membrane (A). The invention proposes coupling ion-selective membranes with the flow separators used in EDR equipment for industrial and municipal water and wastewater treatment systems, thereby allowing the equipment to be assembled quickly and safely. Thus, the invention represents a technological advance in the assembly of electrodialysis systems, particularly the electrodialysis cell, known as a stack, which basically comprises a set of alternating anionic and cationic membranes arranged between two elect(...)
Separator and membrane assembly for electrodialysis equipment and its assembly process
ViewProduction process for recycled lightweight aggregate from wet-blue leather waste incorporated into polypropylene, and preparation of cementitious matrices using the lightweight aggregate
Abstract: This invention belongs to the field of construction materials used in civil engineering and, more specifically, concerns the production of recycled lightweight aggregate (RLA) from wet-blue (WB) leather waste incorporated into polypropylene (PP), as well as the preparation of cementitious matrices using RLA. The proposed cementitious matrix partially replaces natural fine aggregate (sand) with RLA. The main objective is to reduce the environmental impact caused by improper disposal of wet-blue leather waste and to help decrease the amount of this waste sent to hazardous industrial waste landfills (ARIP). This RLA can be used as a lightweight fine aggregate in construction because its density is below 2.0 g/cm³, reducing the dry density of the resulting cementitious matrix without compromising essential properties required for use in nonstructural building elements such as partition blocks, walls, and ceilings.
Production process for recycled lightweight aggregate from wet-blue leather waste
ViewProduction process for regenerative membranes for treating injuries
Abstract: This invention belongs to the tissue engineering technology sector and, more specifically, concerns the development of regenerative tissue membranes made from polysaccharide derivatives and their production process. The invention aims to improve the properties of chitosan membranes used as temporary substitutes for damaged tissue without substantially increasing production costs. To this end, chitosan–?-carrageenan membranes were made using phycocolloid extracts obtained from Nori seaweed waste. The biomass was converted into a value-added product that meets social and environmental requirements, making it more accessible to most people who need this type of care. Membranes formed from polyelectrolyte complexes (PECs) with phycocolloid extract are more ductile due to the plasticizing properties of the phycocolloid; they also exhibit greater thermal stability and surface roughness, resulting in a film with good potential for use in(...)
