There are provided processes for recycling waste such as polystyrene thermoplastic polymer waste and/or polystyrene thermoplastic copolymer waste as well as recycled polystyrene thermoplastic polymer and/or recycled thermoplastic copolymer that may, for example, be obtained from such processes. The processes can comprise the use of a reducing agent.

A feeding device for feeding a separation apparatus, the separation apparatus being suitable for separating aggregates from concrete residues in order to reclaim said aggregates, comprises: a tank for containing a fluid comprising a liquid in which the aggregates to be reclaimed are dispersed; a main screw conveyor for collecting said fluid from a collecting zone of the tank and conveying the liquid and the aggregates contained in said fluid towards the separation apparatus; at least one auxiliary screw conveyor positioned along a bottom surface of the tank for conveying the fluid towards said collecting zone.

Methods and equipment for the recycling of carpet are disclosed that produce a clean fiber product suitable for industrial use. The methods allow the recovery of face fiber material, for example a polyester, polyolefin, or a polyamide, from carpets that includes a face fiber material, a polypropylene backing material, and an adhesive, and include the steps of mechanically impacting the carpet to break the bonds between the adhesive and the fibrous components, treating the fibrous components to remove adhesive granules from the fibrous components, and optionally separating the polypropylene backing from the face fiber. A clean adhesive/calcium carbonate product can also be produced from this process.

A disclosed system and method are configured to process waste via a frontend processing module configured to crush, grind, aggregate and concentrate waste from a coarse material to a finer material including an iterative reprocessing of any oversized components. The disclosed system also includes a classifying module to separate the coarse material from the finer material via a process water and at least one microgrinder and fractioning centrifuge. The disclosed system further comprises a backend processing module configured for further classifying the respective coarse and fine material for energy production and dewatering, recovering and combusting component materials. System submodules are configured to microgrind and gasify or pyrolize a resulting particle slurry into a combustible synthetic gas release for electricity generation and heat. The system is applied to waste recovery of waste glass, electronics waste, coal piles, coal water fuels, biofuels, algae lipid oils, and various precious minerals.

A process for separating synthetic turf product comprising includes the consecutive steps of: (a) downsizing the synthetic turf product into a downsized turf material; (b) separating the downsized turf material by sieving into at least a first fraction substantially comprising a mixture of backing material and additional components and a second fraction substantially comprising grass fiber components; (c) separating the first fraction by specific gravity to provide a low density fraction and a high density fraction; (d) separating the second fraction by specific gravity and size by providing an airflow directed upwards in a separator configured to cause a swirling motion whereby a lighter fraction is entrained upwards in the air flow and a heavy fraction is allowed to fall downwards; and (e) collecting the low density fraction and the light fraction.

A graphene material prepared using waste tires and a preparation method thereof. Waste tires are crushed to 30-200 meshes to obtain tire powders. The tire powders are mixed with KOH or an aqueous solution of KOH to obtain a homogeneous mixture. The mixture is dried at 50-90° C. for 12-48 hours, heated and calcinated in a tube furnace under a protective gas for 1-48 hour to obtain a black lump. The black lump is washed with distilled water, dilute hydrochloric acid or dilute sulfuric acid for at least 3 times, and then washed with deionized water for at least 3 times to obtain a black powder. The black powder is dried to obtain the graphene material. The graphene material has a three-dimensional structure composed of oligolayer graphene intertwined and connected with each other, has a high crystallinity, is not easily agglomerated, and thus can maintain nano-effect of the graphene material.

A specially-equipped ship is configured for environmental cleanup to collect plastic waste floating in the ocean. A method of using the ship is described. The specially-equipped ship can retrieve floating plastic waste in the ocean, shred it, melt it, and cool it to form a solidified block that is usefully employed to form an artificial reef on the ocean floor to house aquatic biota. The ship is outfitted with a conveyor belt fixed to the ship; a furnace to make molten plastic; a davit to drop the solidified block into the ocean to form a reef on the ocean floor. Optionally the ship includes a mold to contain molten plastic; a shredder; a storage compartment to receive plastic particles from the shredder; a fish escape; a vertical wall; a boring machine; photovoltaic cells and/or windmills to produce electric energy.

A method for separating glass from a laminate of glass and binder by breaking sheets of laminated glass into pieces; placing the pieces into a chamber with water; and then pressurizing the chamber, whereby the glass separates from binder; and removing the separated glass from the chamber. The separation can be enhanced by agitating and alternately pressurizing the chamber and freezing the water in the chamber.

A plant for the treatment of car fluff is disclosed having one or more magnetic iron separators, followed by one or more eddy current separators that receive the negative coming from the magnetic iron separators, followed by one or more inductive sensor-based recovery separators that receive the negative coming from the eddy current separators, followed by at least two inductive sensor-based polishing separators respectively calibrated for the separation of stainless steel and copper wires arranged for receiving the material separated by the inductive sensor-based recovery separators, an unravelling shredder also being arranged between the latter and the polishing separator(s) calibrated for the separation of copper wires.

The present invention discloses a method of utilizing refuses in urban and rural areas. The method includes a refuses collection step, a refuse distributing step, a primary magnetic separation step, a primary crushing step, a primary elutriation and floatation step, a uniform cutting step, an acidification and anaerobic treatment step, a selection and separation step, a buffering and adjusting step, an additional anaerobic treatment step and a sludge sedimentation and concentration step. The present invention can make the anaerobic treatment method continuatively dispose the refuses, thereby thoroughly solving the problem that non-anaerobic refuses such as waste plastics, water fiber etc. can not be recycled and completely recycling resources in the refuses.