Abstract

Various illustrative embodiments of a system and process for recovering high-quality biomethane and carbon dioxide product streams from biogas sources and utilizing or sequestering the product streams are provided. The system and process synergistically yield a biomethane product which meets gas pipeline quality specifications and a carbon dioxide product of a quality and form that allows for its transport and sequestration or utilization and reduction in greenhouse gas emissions. The system and process result in improved access to gas pipelines for products, an improvement in the carbon intensity rating of the methane fuel, and improvements in generation of credits related to reductions in emissions of greenhouse gases.

IPC Classes  ?

• C10L 3/10 - Working-up natural gas or synthetic natural gas
• F25J 3/00 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification

Abstract

A system and process for sorting and recovery of recyclable materials, and in particular, sorting and recovery of recyclable materials from mixed waste comprising municipal solid waste in a materials recovery facility.

IPC Classes  ?

• B07B 15/00 - Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
• B07B 9/00 - Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
• B07B 13/00 - Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices

Abstract

A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO2 and GHG emissions.

IPC Classes  ?

• B03B 9/06 - General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
• C10L 5/46 - Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
• C10L 5/48 - Solid fuels essentially based on materials of non-mineral origin on industrial residues or waste materials

Abstract

This invention is directed to systems including one or more trenches or wells that include one or more perforated pipes through which a gas, such as air, can be injected into the vadose zone of ground located beyond a methanogenic source to create a positive-pressure gas curtain and/or aerobic conditions in the vadose zone that inhibits migration of and/or facilitate the remediation of mobile volatile organic compounds that are capable of contaminating groundwater surrounding the methanogenic source.

IPC Classes  ?

• B09C 1/00 - Reclamation of contaminated soil
• C02F 1/74 - Treatment of water, waste water, or sewage by oxidation with air
• C02F 3/02 - Aerobic processes

Abstract

A containment (1200) system includes a vapor resistant container (420) for a material (1060) , and a seal for the vapor resistant container (420) .

IPC Classes  ?

• B65D 85/82 - Containers, packaging elements or packages, specially adapted for particular articles or materials for poisons
• B65D 77/02 - Wrapped articles enclosed in rigid or semi-rigid containers
• B65D 77/04 - Articles or materials enclosed in two or more containers disposed one within another

Abstract

Methods of treatment of cyanide-containing waste are provided. In particular, methods for treatment of spent potliner prior to landfill disposal are provided. These methods, which involve treatment of the waste with a mixture containing an aqueous oxidizing solution and an agent, such as magnesium chloride, that increases the oxidation potential of the solution, can be performed at ambient temperature and pressure.

IPC Classes  ?

• A62D 3/38 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by combustion