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.

A combustion ash handling method of handling combustion ash discharged from a combustion furnace that combusts a petroleum-based fuel includes: separating the combustion ash into a heavy component and a light component by a dry-type separation technique; feeding the light component to the combustion furnace as a fuel; and recovering the heavy component. A metal such as vanadium is separated and extracted from the heavy component of the combustion ash.

A combustion ash handling method of handling combustion ash discharged from a combustion furnace that combusts a petroleum-based fuel includes: separating the combustion ash into a heavy component and a light component by a dry-type separation technique; feeding the light component to the combustion furnace as a fuel; and recovering the heavy component. A metal such as vanadium is separated and extracted from the heavy component of the combustion ash.

A process of obtaining powdered sodium silicate from sand tailings generated from iron ore processing addresses the production of raw materials used in the manufacturing of geopolymers to be employed mainly by the construction industry and in road paving. The utilization of this tailing reduces environmental impact generated by the disposal in large dams, as well as enabling addition of value to a tailing by obtaining a commercially applicable product.

A process of obtaining powdered sodium silicate from sand tailings generated from iron ore processing addresses the production of raw materials used in the manufacturing of geopolymers to be employed mainly by the construction industry and in road paving. The utilization of this tailing reduces environmental impact generated by the disposal in large dams, as well as enabling addition of value to a tailing by obtaining a commercially applicable product.

Methods and systems for desalination and decontamination for solid waste are disclosed. The method includes decontaminating a volume of contaminated, desalinated drill cuttings by removing at least a portion of contaminants associated with the contaminated, desalinated drill cuttings. The desalinated drill cuttings are drill cuttings that have been desalinated by a desalination unit.

Methods and systems for desalination and decontamination for solid waste are disclosed. The method includes decontaminating a volume of contaminated, desalinated drill cuttings by removing at least a portion of contaminants associated with the contaminated, desalinated drill cuttings. The desalinated drill cuttings are drill cuttings that have been desalinated by a desalination unit.

The present disclosure provides a method of disposing of a residual pharmaceutical composition from an IV bag. The method of disposing also includes coupling the IV bag to a pharmaceutical dispenser coupler. The disposing also includes extracting at least a portion of the residual pharmaceutical composition from the IV bag through the pharmaceutical dispenser coupler. The disposing also includes treating at least a portion of the extracted pharmaceutical composition in one of a chemical and physical manner.

The invention relates to a method for producing pellets which are capable of providing free flowing powder suitable for firing an industrial furnace from municipal and/or other waste, the process comprising the following steps: (i) providing waste material comprising one or more thermoplastic material(s) of more than 40%, based on the total dry weight of the waste and one or more cellulosic material(s) of more than 30%, based on the total dry weight of the waste, wherein the waste has a particle size distribution with more than 80% larger than 5 mm, more than 95% smaller than 60 mm, (ii) subjecting the waste material through a pelletiser with holes between 4-16 mm and a length ratio of more than 2, and subjecting the pellets through a second pelletiser with holes between 4 and 10 mm, and a length ratio of more than 2 to provide pellets with a diameter between 4 and 10 mm, and a length of between 3 and 50 mm. The invention also relates to pellets obtained and having advantageous properties.

A method for recovering at least cobalt of valuable metals, cobalt and nickel, from an acidic solution obtained by subjecting waste containing positive electrode materials for lithium ion secondary batteries to a wet process, the acidic solution comprising cobalt ions, nickel ions and impurities, wherein the method includes: a first extraction step for Co recovery, the first extraction step being for extracting cobalt ions by solvent extraction from the acidic solution and stripping the cobalt ions; an electrolytic step for Co recovery, the electrolytic step being for providing electrolytic cobalt by electrolysis using a stripped solution obtained in the first extraction step for Co recovery as an electrolytic solution; a dissolution step for Co recovery, the dissolution step being for dissolving the electrolytic cobalt in an acid; and a second extraction step for Co recovery, the second extraction step being for extracting cobalt ions by solvent extraction from a cobalt dissolved solution obtained in the dissolution step for Co recovery and stripping the cobalt ions.