3 results about "Ionic contamination" patented technology

A composition for selectively removing a first ionic contaminant from a wastewater stream. The composition is formed into a particle. The composition includes a core formed of a non-active material relative to the first ionic contaminant, and, a shell formed from an active material relative to the first ionic contaminant, wherein the active material comprises between 10 to 50 wt % of the particle. The shell may also include a binder material that may be non-active relative to the first ionic contaminant, but active relative to a second ionic contaminant. The core may be formed from a glass-forming material so that a vitrification process may be used for the spent solid waste.

The application discloses a solid capsule with corrosion inhibition and ion adsorption functions and a preparation method thereof, and belongs to the technical field of oil and gas field chemistry. The solid capsule can deliver 1H-benzotriazole (BTA) to a corrosion area of an oil well for targeted corrosion inhibition through a curing reaction of an epoxy resin (EP) and polyethylene imine (PEI), and dense amino groups (-NH2 and -NH-) in a molecular chain of the polyethylene imine (PEI) endow the polyethylene imine (PEI) with strong chelation and electrostatic adsorption capabilities. The solid capsule with corrosion inhibition and ion adsorption functions has a three-dimensional network structure, and through swelling, the structure is fully stretched, the corrosion inhibitor is released, and at the same time, the amino groups in the molecular chain of the PEI are exposed to water, so that the diffusion and combination of heavy metal ions are accelerated. Therefore, a controlled release system with both corrosion inhibition and ion adsorption functions is realized, which provides an innovative solution for solving the problems of corrosion and ion pollution in a complex environment of an oil and gas field.