The present invention pertains to a method to enable recycling of a panel comprising as a core structural component a polysaccharide fibre based plate at least one side of which is covered with a layer of a non water soluble adhesive, the method comprising immersing the panel in an aqueous liquid at least until the polysaccharide fibre based plate has absorbed an amount of liquid that leads to detachment of the adhesive from the polysaccharide fibres and at least partial detachment of neighbouring polysaccharide fibres from each other, resulting in a mixture of at least partially individualised polysaccharide fibres and separate adhesive, and thereafter removing the adhesive from the mixture.

The present invention pertains to a method to enable recycling of a panel comprising as a core structural component a polysaccharide fibre based plate at least one side of which is covered with a layer of a non water soluble adhesive, the method comprising immersing the panel in an aqueous liquid at least until the polysaccharide fibre based plate has absorbed an amount of liquid that leads to detachment of the adhesive from the polysaccharide fibres and at least partial detachment of neighbouring polysaccharide fibres from each other, resulting in a mixture of at least partially individualised polysaccharide fibres and separate adhesive, and thereafter removing the adhesive from the mixture.

The invention provides a method and equipment for extracting carbon materials from plastics. Particularly, the method produces nanostructured carbon materials by heating of at least one salt (e.g., NaCl) and at least one plastic material (e.g.polyethylene terephthalate) to a temperature greater than the melting point of the said salt, in which molten state of the said salt protects the carbonaceous material from oxidation. Moreover, molten salt promotes the graphitization of carbon materials. The product is in the form of graphenenano-flakes with high conductivity and high surface area. This method provides a simple, economical and efficient approach for producing conductive carbon materials. It also has a significant positive impact on the environment through the transformation of virtually non-degradable plastic wastes into high-value conductive carbon materials.

A method for dissolving a lithium compound according to the present invention includes bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to produce carbonic acid, and allowing the carbonic acid to react with the lithium compound to produce lithium hydrogen carbonate.

A waste treatment system for separating contaminants including per-fluoroalkyl and poly-fluoroalkyl substances (PFAS) from bulk solid waste (12). A preparation module (9) having a bulk material separator separates oversize material (14) from bulk solid waste (12). A physical separation module (13), located down-stream of the preparation module (9), separates the bulk solid waste (12) based on particle size using physical and/or hydrodynamic and/or density separation techniques. An extraction/chemical separation module (19), located downstream of the physical separation module (13), adds leachate and/or extractant to separate the contaminants from a slurry output from the physical separation module (13), into a fines output and a contaminated water solution. A water circulation system (21) supplies water to the physical separation module (13) and the extraction/chemical separation module (19), the water circulation system including at least one water treatment process, the treated water being recycled and recirculated within the waste treatment system.

An apparatus for sampling landfill gas from a landfill flowing through a pipe. The apparatus may comprise: an enclosure configured to receive a section of the pipe; a gas sampling port in the section of the pipe; at least one sensor device disposed in a region of the enclosure, the at least one sensor being coupled to the section of the pipe through the gas sampling port; and thermal insulation positioned to retain heat from the section of the pipe in the region of the enclosure. A method of operating a landfill gas recovery system. The method may comprise: flowing gas from a well riser pipe through a sampling subsystem to a collection system; and heating a portion of the sampling subsystem with the gas flowing from the well riser pipe to the collection system.

A method of utilizing construction and demolition waste is disclosed. The method comprises pretreating the construction and demolition waste into particles with a predetermined range of size; and obtaining calcium carbonate from the particles. The method of the present invention enables to recycle a wide range of construction and demolition waste, furthermore it can convert these waste materials into the high purity calcium carbonate which can be widely used in many applications.

This invention relates to the field of contaminated plastic waste decomposition. More specifically, the invention comprises methods and systems to decompose contaminated plastic waste and transform it into value-added products.

A process for recycling aerosol cans. The process includes the steps of draining the materials of the aerosol cans, collecting the materials of the aerosol cans, and refining the contents of the aerosol cans into original products that are available for resale. The step of draining the materials of aerosol cans is done by crushing the aerosol cans in an inert atmosphere and creating a metal brick from the aerosol cans. The materials are then drained into separator tanks where they can be separated and refined for resale.

The present invention provides a method and apparatus for dewatering a biological solid material employing both microwave irradiation and solvent extraction. The method comprises microwave irradiation pretreatment, solvent extraction dewatering, solid-liquid separation, and solvent recovery. Through microwave irradiation of an aqueous biological solid material, gaps in the solid material are increased, and the biological material is fractured, thus releasing more bound water in the solid material. Subsequently, the microwave-irradiated biological solid material is brought into full contact with an organic solvent, allowing the solvent to absorb and extract moisture from the solid, thus removing moisture from the solid. The aqueous solvent is then subjected to evaporation under reduced pressure or gasification under reduced pressure in a separation apparatus so as to separate the moisture and the solvent. The solvent is then compressed, condensed and recovered for recycling. Also provided is a device for implementing the dewatering method.