Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

There are provided recycled polystyrene polymers having a melt flow index of less than about 25 g/10 min. There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in p-cymene under conditions to obtain a polystyrene/p-cymene mixture, adding the polystyrene/p-cymene 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.

Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300 C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460 C. in at least one hot zone of the extruder.

Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300 C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460 C. in at least one hot zone of the extruder.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation/energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Compositions comprise synergistic enzyme mixtures, and related methods, to realize near-complete depolymerization in biodegradable polymer/additive blends.

A system and method of producing a feedstock using asphalt shingle waste material includes: (a) providing an asphalt shingle material to a horizontal shaft hammer mill, and milling the material to produce a milled asphalt shingle material; (b) screening the milled asphalt shingle material to produce a milled and screened asphalt shingle material, wherein granules are removed from the milled asphalt shingle material; (c) introducing a heated asphalt flux to an attritor; (d) introducing the milled and screened asphalt shingle material to the attritor; (e) operating the attritor to process the contents of the attritor, producing a recycled asphalt mixture; and (f) passing the recycled asphalt mixture through a filter to produce an asphalt manufacturing feedstock.

A system and method of producing a feedstock using asphalt shingle waste material includes: (a) providing an asphalt shingle material to a horizontal shaft hammer mill, and milling the material to produce a milled asphalt shingle material; (b) screening the milled asphalt shingle material to produce a milled and screened asphalt shingle material, wherein granules are removed from the milled asphalt shingle material; (c) introducing a heated asphalt flux to an attritor; (d) introducing the milled and screened asphalt shingle material to the attritor; (e) operating the attritor to process the contents of the attritor, producing a recycled asphalt mixture; and (f) passing the recycled asphalt mixture through a filter to produce an asphalt manufacturing feedstock.