A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe.sub.3O.sub.4 and γ-Fe.sub.2O.sub.3; said modifier comprises ethylenediaminetetraacetic acid (EDTA, nitrilotriacetic acid trisodium salt (NTA, (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.

Provided is a water absorption treatment material and a method for manufacturing the same, according to which separation of a coating layer portion is not likely to occur. A water absorption treatment material includes a granular core portion and a coating layer portion. A recessed portion is formed on the surface of the granular core portion. The recessed portion is intentionally formed on the surface of the granular core portion. The coating layer portion is provided so as to cover the surface of the granular core portion. A portion of the coating layer portion enter the recessed portion.

Structured adsorbent beds comprising a high cell density substrate, such as greater than about 1040 cpsi, and a coating comprising adsorbent particles, such as DDR and a binder, such as SiO.sub.2 are provided herein. Methods of preparing the structured adsorbent bed and gas separation processes using the structured adsorbent bed are also provided herein.

The invention discloses a core-shell structure polymer magnetic nanosphere with a high Cr (VI) adsorption capacity and its preparation method and application. The preparation method includes: adding Fe.sub.3O.sub.4 powder into a mixed solution of water and ethanol, dispersing Fe.sub.3O.sub.4 powder in the solution evenly by ultrasound, sequentially adding resorcinol and formaldehyde into the suspension to adjust a pH, stirring and reacting to obtain Fe.sub.3O.sub.4@RF evenly dispersed in a chitosan solution, dropwise adding the prepared suspension into a mixed solution of paraffin and span 80, stirring for a period of time, adding a glutaraldehyde aqueous solution, stirring and reacting to obtain a magnetic chitosan nanosphere. The magnetic chitosan nanosphere prepared may be applied to adsorbing Cr (VI) in a water solution. Not only the magnetic chitosan nanospheres prepared has a high adsorption capacity for Cr (VI), but also can be quickly separated by an external magnetic field after adsorption.

Disclosed in certain embodiments are catalyst-adsorbent compositions that include a metal oxide catalyst adapted for converting gaseous pollutants into chemically-benign species, and an adsorbent adapted for adsorbing the chemically-benign species together with other gaseous species and volatile organic compounds.

A method for purifying dye-containing wastewater based on a porous-polymer-modified metal carbon nanotube membrane includes: (1) preparing the porous-polymer-modified metal carbon nanotube membrane; and (2) passing the dye-containing wastewater through the porous-polymer-modified metal carbon nanotube membrane to remove dyes in the dye-containing wastewater. A device for purifying dye-containing wastewater is also disclosed. The device includes the porous-polymer-based metal carbon nanotube membrane.

The invention relates to a composition for mineralising carbon dioxide and nitrogen oxide gases, which comprises a mixture of magnesium (between 1 and 25%), iron (between 1 and 23%), calcium monoxide (between 1 and 25%), titanium dioxide (between 0.1 and 11%) and silicon dioxide (between 16 and 75%), with a particle diameter between 100 nm and 4000 μm. The composition causes the mineralisation of carbon dioxide (CO.sub.2) and of the gaseous chemical compounds known as “nitrogen oxides” (NO.sub.x) in the atmosphere. This composition can be added or mixed as an additive in paints, dyes, resins and elastic polymers (gum and natural rubber) in parts with wear, and for any type of covering.

Methods and apparatuses for producing a substrate are described. A method and apparatus for introducing a component into a fluid supply is also presented. A method can include providing a first fluid supply. The fluid supply can be configured as a foam in some embodiments. The method can also include providing a component feed system and a supply of the component. The method can include introducing the component to a fluid supply in an eductor in some aspects. A resultant slurry including a fluid supply and the component can be transferred through a headbox. The resultant slurry can be dewatered to provide a substrate including the component.

An organic light emitting display device may include a filling part filling a space between a second substrate and an organic light emitting diode, and a dam structure disposed in a non-display area and surrounding the filling part. At least one of the dam structure and the filling part includes a getter. The getter of the present disclosure is composed of magnesium oxide particles whose surfaces are modified into a first surface modification part made of an amino silane-based compound and a second surface modification part bound to the first surface modification part and made of a compound containing an acrylate group and a methacrylate group. Accordingly, it is possible to provide an organic light emitting display device that has high transparency and of which optical properties and durability are improved by minimizing permeation of water and oxygen.

A method for producing a coating material is specified, comprising the following steps: producing a mixture of hydroxyl-terminated siloxane and siloxane having at least three functional hydrides and/or silane having at least three hydrolysable groups; adding an organic solvent to the mixture; homogenizing the mixture; adding an adsorption material to the mixture; and adding a catalyst to the mixture. A coating material according to the invention, a method for coating a device, and a heat exchanger are also specified.