摘要:
A filtration device selectively removes hydrophobic waste from wastewater while leaving other water and surfactant components, which may then be recycled to a point of use. The wastewater treatment system may comprise a filtration unit and filtration media. The filtration unit may comprise a housing having an inlet in fluid communication with an outlet of a point of use and configured to receive a wastewater stream from the point of use for treatment, and an outlet in fluid communication with an inlet of the point of use and configured to deliver filtrate to the point of use. The filtration media may be positioned within the housing. The filtration media may comprise an oleophilic foam substrate and a hydrophobic coating on the oleophilic foam substrate. The filtration media may be configured to separate a hydrophobic component from the wastewater stream to produce filtrate comprising water and surfactant.
摘要:
The invention relates to an optical waveguide having a Fibre Bragg Grating, which waveguide is provided with a coating comprising a nanoporous sensor material, the sensor unit further comprising an optical detection unit for detecting a change in an optical property of the waveguide, wherein the grating is present in the core of the waveguide, the coating at least substantially surrounds the grating, which coating is expandable or shrinkable under the influence of the chemical substance, thereby causing a change in axial strain in the grating when he sensor material is exposed to the chemical substance, which change is detectible by a optical detection unit. The invention further relates to an optical sensor system for measuring a chemical substance, the sensor system comprising a waveguide according to the invention.
摘要:
Disclosed herein are embodiments of a metallic composite that is made using embodiments of a facile, efficient method. Certain embodiments of the disclosed method of making the composite can comprise a one-step, room temperature synthetic procedure, and other embodiments can comprise a two-step synthetic procedure. Also disclosed herein are embodiments of a method of using the disclosed composite, such as for fluid purification via contaminant degradation, or in biological sensor applications.
摘要:
A method and device for enhanced capture of target analytes is disclosed. This invention relates to collection of chemicals for separations and analysis. More specifically, this invention relates to a solid phase microextraction (SPME) device having better capability for chemical collection and analysis. This includes better physical stability, capacity for chemical collection, flexible surface chemistry and high affinity for target analyte.
摘要:
In an embodiment, a method for manufacturing a chromatography apparatus such as a thin layer chromatography ("TLC") plate is disclosed. The method includes forming a layer of elongated nanostructures (e.g., carbon nanotubes), oxidizing the elongated nanostructures to form a surface enriched in oxygen moieties, and at least partially coating the oxidized elongated nanostructures with a coating. The coating includes a stationary phase and/or precursor of a stationary phase for use in chromatography. The stationary phase may be functionalized with hydroxyl groups by exposure to a base or acid. The stationary phase may further be treated with a silane (e.g., an amino silane) to improve the performance of the chromatography apparatus. Embodiments for TLC plates and related methods are also disclosed.
摘要:
A composite particle comprising a fluorinated surface and a discontinuous layer of gold nanoparticles disposed on the fluorinated surface, articles that include such particles, and methods of using the particles and the articles for removal of ethylene.
摘要:
In an embodiment, a porous composite particulate material includes a plurality of composite particles. Each composite particle includes an acid-base-resistant core particle at least partially surrounded by one or more layers of acid-base-resistant shell particles. The shell particles are adhered to the core particle by a polymeric layer. The shell particles and/or core particles may be made from an acid-base-resistant material that is stable in harsh chemical conditions. For example, the shell particles and/or core particles may be made from diamond, graphitic carbon, silicon carbide, boron nitride, tungsten carbide, niobium carbide, zirconia, noble metals, acid-base stable highly cross- linked polymers, acid-base stable at least partially cross-linked polymers, titania, alumina, thoria combinations of the foregoing, or other acid-base-resistant materials. The porous composite particulate materials disclosed herein and related methods and devices may be used in separation technologies, including, but not limited to, chromatography and solid phase extraction.