The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in ethylbenzene under conditions to obtain a polystyrene/ethylbenzene mixture, adding the polystyrene/ethyl benzene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.

A method of recovering structural members from a used absorbent article comprising a front sheet, a back sheet and an absorbent body between the front sheet and the back sheet, wherein at least one of the front sheet and the back sheet includes a film, and wherein the absorbent body includes an absorbent body material, may include swelling the used absorbent article with water, applying a physical shock to and disintegrating the swelled used absorbent article into at least the film and the absorbent body material, and separating the film and the absorbent body material.

Disclosed are methods and apparatus for recovering fibers from fiber reinforced polymers wherein the fiber reinforced polymer is contacted with a Lewis base for a time sufficient to allow at least partial depolymerization of the polymer.

The present disclosure relates to a method for decomposing a plastic-containing material which makes it possible to stably and efficiently decompose a plastic-containing material, and a method for recovering an inorganic material, as well as a regenerated carbon fiber and a method for producing the regenerated carbon fiber. The present disclosure also relates to a blended spun yarn comprising a regenerated carbon fiber, a carbon-fiber-reinforced thermoplastic resin pellet comprising the blended spun yarn, and a method for producing them, a carbon-fiber-reinforced thermoplastic resin strand and a method for producing the same, and a carbon-fiber-reinforced thermoplastic pellet.

The present invention relates to a method for downsizing, in particular shredding, of plastic material and removing dust from said downsized plastic material. The invention also relates to a method for solvent-based recycling a plastic material with an integrated step of addition of functional solid auxiliaries to the solution comprising the thermoplastic target polymer. The invention also relates to a method for plastic recycling with an integrated extraction step. The invention also relates to a method for removing solvents from suspensions or solutions comprising a dissolved thermoplastic target polymer. The invention also relates to a method for removing additives and/or impurities from a fluidized form comprising a thermoplastic target polymer while being processed in an extruder, wherein the fluidized form comprising a thermoplastic target polymer is subjected to a counter-stream of at least one extractant. It also relates to a plastic waste recycling system for recycling a target polymer.

Disclosed herein, amongst other things, is a molded article, such as a preform that is blow moldable to form a container, and a related method of forming and recycling a container. The structure and steps includes injection molding a molded article having tubular body.

The purpose of the present disclosure is to provide a method for producing pulp fibres for saccharification from the pulp fibres of used sanitary items, said pulp fibres for saccharification having low lignin contents distributed within a narrow range, and enabling the production of pulp fibres for saccharification having superior saccharification properties. The production method according to the present disclosure is characterised by comprising the following: a step for supplying a mixed solution (51) containing pulp fibres and highly-absorbent polymers sourced from used sanitary items to a treatment tank (31) via a mixed-solution supply port (32); a step for supplying an ozone-containing gas (53) to a treatment solution (52) within the treatment tank (31) via an ozone-containing-gas supply port (43); a step for lifting the ozone-containing gas (53) whilst lowering the pulp fibres and highly-absorbent polymers within the treatment tank (31), thereby bringing the ozone-containing gas (53) into contact with the pulp fibres and highly-absorbent polymers, and forming pulp fibres for saccharification from the pulp fibres; and a step for discharging the treatment solution (52) via a treatment-solution discharge port (33). The method is further characterised in that the pulp fibres for saccharification have lignin contents of 0.1% or less.

Provided is a processing method for an object, including the steps of: arranging an object in a first portion that is a portion having a space and configured to process the object; and decomposing an organic substance in the object by covering the object with catalysts formed of granules made of a metal oxide containing titanium and bringing the catalysts into contact with the organic substance, and simultaneously maintaining the catalysts in the first portion at a temperature of 480° C. or more and 550° C. or less. The step of decomposing the organic substance in the object includes causing gas containing oxygen to flow into the first portion so that a decomposition reaction of the organic substance occurs, and the catalysts are slightly moved in at least a part of a surface of the object.

The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.