A geocomposite with a geonet and a geotextile. The geotextile has a nonwoven fabric layer and a woven fabric layer, with the nonwoven fabric connected by needle-punching to the woven fabric whereby fibers of the nonwoven fabric extend through and beyond the woven fabric, and the woven fabric and fibers of the nonwoven fabric extending through the woven fabric are bonded to one side of the geonet.

A method for lining an existing waste disposal site having a waste level includes, for example: installing perimeter barrier walls about the site and interior barrier walls within the perimeter barrier walls to define cells; transferring waste, such as for example ash, from one of the cells to one or more other cells to form an empty cell with a layer of contaminated material at the bottom of the empty cell; removing the layer of contaminated material from the empty cell to form a clean cell with a noncontaminated bottom layer; installing a barrier liner layer in the clean cell to form a lined cell; and transferring waste from other cells into the lined cell.

A system and method of disposing nuclear waste and other hazardous waste includes means for, and the steps of, blending a waste stream, which includes either a radioactive waste or a hazardous waste (or both), with a liquid and, optionally, a solid material to produce a dense fluid and pumping the dense fluid into a tubing string of an injection boring. The dense fluid then exits a perforation in a casing of the injection boring and enters a fracture in a rock strata, where it continues to propagate downward until it reaches an immobilization point. The dense fluid may be a slurry formed by a metal and a cross-linked polymer gel or hydrated clay slurry. The metal can be one that has a melting temperature less than the temperature at the bottom of the injection boring. The solid material could also be other nuclear waste or a radionuclide.

A new method for storing CO.sub.2 in the form of naturally bound carbon over a long period of time. More specifically, a method for storing organic material in bogs to reduce CO.sub.2 in the atmosphere. The method, includes the steps of providing organic material, mixing the organic material with water to form a pumpable slurry, pumping the slurry into a bog through one or more pipes, monitoring the bog and taking measures if required to maintain its conservation capabilities.

A geocomposite with a geonet and a geotextile. The geotextile has a nonwoven fabric layer and a woven fabric layer, with the nonwoven fabric connected by needle-punching to the woven fabric whereby fibers of the nonwoven fabric extend through and beyond the woven fabric, and the woven fabric and fibers of the nonwoven fabric extending through the woven fabric are bonded to one side of the geonet.

The invention relates to the storage of contaminated material under a water layer, in particular the storage of bottom ash. The invention provides for this purpose a method for storing a contaminated material under a water layer, comprising the processing steps of supplying the contaminated material, supplying ground material, mixing the contaminated material with the ground material and arranging the mixture of contaminated material and ground material in or under a retention layer situated under a water layer, and wherein the mixture is not in contact with the water layer, and the retention layer comprises ground material. The invention also provides an installation for storing contaminated material and a composition comprising the contaminated material.

Open pit mine (OPM) structures are modified or built new for use in disposing of low-level radioactive/nuclear waste (LLW). A drainage system is added to the OPM to drain water, such as, but not limited to, rain water, out of a volume of the OPM and to a particular geologic zone located far below the OPM that is isolated away from the local water table. Cells are formed within the volume of the OPM that are configured to receive the LLW. Cells are added to the OPM from a bottom towards a top of the OPM. Void spaces around the LLW materials within the cells are filled in with a protective-medium to mitigate against radionuclide migration away from the LLW materials within the cells. The protective-medium may be a blend of carbon nanotubes and a foam cement slurry. The carbon nanotubes may be made from reacting ethylene with vermiculite.

A petroleum coke carbon capture and sequestration method is provided which includes processing the petroleum coke into a petroleum coke particulate, preparing a slurry including the petroleum coke particulate, and injecting the slurry into an underground area. The underground area could be a live crude oil extraction well, where it could displace crude oil, an underground storage facility, a salt formation, or the like.

A petroleum coke carbon capture and sequestration method is provided which includes processing the petroleum coke into a petroleum coke particulate, preparing a slurry including the petroleum coke particulate, and injecting the slurry into an underground area. The underground area could be a live crude oil extraction well, where it could displace crude oil, an underground storage facility, a salt formation, or the like.

This disclosure relates to a method and a system for sequestering carbon-containing materials in underground wells. An example method includes: obtaining a material comprising a carbon-containing liquid; optionally testing the material for compatibility with an underground well; optionally adjusting a property of the material to improve the compatibility; and providing the material for injection into the underground well.