Abstract:
A method of bringing at least two liquids of different pH values into contact with a synthetic resin and substantially eliminating volume changes in the resin bed due to changes in the pH of the liquid phase, is provided wherein the resin is made up of a mixture of at least two different resins, the volumes of which depend on the pH of the liquid phase in which the resin is located, a first resin being one having its maximum volume when located in an acid environment and its minimum volume when located in an alkaline environment, a second resin being one having its minimum volume when located in an acid environment and its maximum volume when located in an alkaline environment, the ratio of the two resins in the mixture being such that volume changes in each resin resulting from changes in the pH of their environment substantially compensate one another so that the resin mixture maintains a substantially uniform volume in acid and alkaline environments.
Abstract:
In one aspect, a functionalized porous material includes a synthetic porous material, the synthetic porous material comprising a surface, wherein at least a portion of the synthetic porous material surface is a substrate; and a mixed-metal hydroxide, wherein the mixed-metal hydroxide is affixed to the substrate.
Abstract:
A method for removing a contaminant from a fluid is provided. A positively charged layered double hydroxide is combined with a negatively charged clay material to form adsorption material. The adsorption material is contacted with an aqueous solution containing the contaminant to adsorb the contaminant onto the adsorption material.
Abstract:
A process for selective isolation of high molecular weight (˜1230 Daltons) naphthenic acids (Arn acids). The process includes providing a polymeric resin with a bound a quaternary amino group and applying a crude oil sample containing Arn acids to the polymeric resin. A first wash of an organic solvent is applied to the sample followed by a second wash of a polar organic solvent mixture. The first two washes remove unwanted crude oil compositions while the Arn acids are bound to the quaternary amino groups. A third wash of acidified organic solvent removes the Arn acids from the polymeric resin, thereby forming an elute comprising the Arn acids and the acidified organic solvent. The acidified organic solve is then evaporated isolating the Arn acids from the crude oil sample.
Abstract:
A method of remediating a water-based fluid includes the steps of providing a container providing a fluid cavity and organic, inorganic and biological remediation media within the cavity. The container is tubular and provides a linear flow direction, organic, inorganic and biological remediation media arranged in the cavity and configured to permit a water-based fluid within the cavity to simultaneously flow through the media. The organic, the inorganic and the biological remediation media are respectively configured to remove organic, inorganic and microbiological constituents. The organic, inorganic and biological remediation media are arranged within the cavity along the linear flow direction. Multiple cartridges are arranged within the cavity and spaced apart from one another. A predetermined flow rate of the water-based fluid through the cavity is set and it concurrently removes organic, inorganic and iodine-based biocide contaminants from the fluid within the cavity.
Abstract:
An ion exchange filter assembly includes an ion exchange filter cartridge and a housing. The ion exchange filter cartridge includes an ion exchange filter for filtering a coolant. The housing includes a first section receiving the ion exchange filter cartridge and a second section for degassing the coolant. The first section is in fluid communication with the second section.
Abstract:
A water-based remediation bed includes a container providing a fluid cavity. Organic, inorganic and biological remediation media are arranged in the cavity and are configured to permit a water-based fluid within the cavity to simultaneously flow through the media.