The present invention relates to a process for the production of ethylene-based polymers from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock; (b) providing a hydrocarbon stream B; (c) supplying a feed C comprising a fraction of the hydrocarbon stream A and a fraction of the hydrocarbon stream B to a thermal cracker furnace comprising cracking coil(s); (d) performing a thermal cracking operation in the presence of steam to obtain a cracked hydrocarbon stream D; (e) supplying the cracked hydrocarbon stream D to a separation unit; (f) performing a separation operation in the separation unit to obtain a product stream E comprising ethylene; (g) supplying the product stream E to a polymerisation reactor; and (h) performing a polymerisation reaction in the polymerisation reactor to obtain an ethylene-based polymer; wherein in step (d): ⋅the coil outlet temperature is ≥800 and ≤870° C., preferably ≥820 and ≤870° C.; and ⋅the weight ratio of steam to feed C is >0.3 and <0.8. Such process allows for optimisation of the quantity of waste plastic material that finds its way back into a polyethylene that is produced as outcome of the process. The higher that quantity is, i.e. the higher the quantity of chemical building blocks that are present in the waste plastic material that are converted to the produced polyethylene, the better the sustainability footprint of the process is. The process allows for circular utilisation of plastics. In addition, the process allows for increased efficiency in the production of polyethylene in that the fraction of ethylene in the cracked hydrocarbon stream D is increased. A further advantage of the process of the present invention is that the overall energy consumption towards polyethylene is reduced.

A biodegradable polymer composition, according to the present invention, comprises polyhydroxybutyrate and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) blended with thermoplastic starch, one or more compatibilizers selected from the group consisting of dihexyl sodium sulfosuccinate and maleic anhydride, and one or more additives selected from the group consisting of micro-crystalline cellulose and cellulose. Methods of producing a biodegradable polymer use processed cannabis waste as a carbon source.

A biodegradable polymer composition, according to the present invention, comprises polyhydroxybutyrate and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) blended with thermoplastic starch, one or more compatibilizers selected from the group consisting of dihexyl sodium sulfosuccinate and maleic anhydride, and one or more additives selected from the group consisting of micro-crystalline cellulose and cellulose. Methods of producing a biodegradable polymer use processed cannabis waste as a carbon source.

A process for preparing a composite part, the process comprising: recovering unsaturated resin prepreg scrap; combining the recovered unsaturated resin prepreg scrap with a second resinous thermosetting component; and co-molding the prepreg scrap and resinous thermosetting component together under a pressure of 25 to 4000 psi and at a temperature of 100-400° F.

A process for preparing a composite part, the process comprising: recovering unsaturated resin prepreg scrap; combining the recovered unsaturated resin prepreg scrap with a second resinous thermosetting component; and co-molding the prepreg scrap and resinous thermosetting component together under a pressure of 25 to 4000 psi and at a temperature of 100-400° F.

Generally described, the methods disclosed herein for recycling fiber composite source objects, such as wind turbine blades, include converting a whole wind turbine blade to an output material state that is useful for manufacturing other products, such as those used in construction of buildings, packaging, raw materials, and pellets, among other products. The recycling process is performed while tracking the progress and location of each wind turbine blade such that the direct source of the output material may be determined. In some embodiments, the method includes sectioning the wind turbine blades, crushing the wind turbine blade sections, tracking the progress of each blade through the process, and loading output materials into a suitable transportation vessel. Correlating each wind turbine blade to a quantity of output material provides several advantages, including various certifications of the material for uses with restricted or otherwise controlled products and materials, cost savings, and other advantages.

Generally described, the methods disclosed herein for recycling fiber composite source objects, such as wind turbine blades, include converting a whole wind turbine blade to an output material state that is useful for manufacturing other products, such as those used in construction of buildings, packaging, raw materials, and pellets, among other products. The recycling process is performed while tracking the progress and location of each wind turbine blade such that the direct source of the output material may be determined. In some embodiments, the method includes sectioning the wind turbine blades, crushing the wind turbine blade sections, tracking the progress of each blade through the process, and loading output materials into a suitable transportation vessel. Correlating each wind turbine blade to a quantity of output material provides several advantages, including various certifications of the material for uses with restricted or otherwise controlled products and materials, cost savings, and other advantages.

A system for reclaiming carbon fiber from carbon fiber containing material using solar energy includes a sunlight focusing system, a sample platform for placement of carbon fiber containing material to be treated by focused sunlight from the sunlight focusing system, the sample platform being provided with a gas absorption pipe, and a waste gas treatment system connected with the gas absorption pipe.

A system for reclaiming carbon fiber from carbon fiber containing material using solar energy includes a sunlight focusing system, a sample platform for placement of carbon fiber containing material to be treated by focused sunlight from the sunlight focusing system, the sample platform being provided with a gas absorption pipe, and a waste gas treatment system connected with the gas absorption pipe.

Methods of producing particles of fiber and resin from fiber-resin composite materials are disclosed. The particles may be combined with a resin system and optionally combined with fillers, binders or reinforcements to produce new cured solid composite products.