A riser bracket for supporting a riser board and a computer card inserted into the riser board is disclosed. The riser bracket includes a first riser bracket piece, a first latch, a second riser bracket piece, and a second latch. The computer card and the riser board are positioned on a motherboard. The first riser bracket piece is configured to be coupled to the riser board. The first latch is configured to the first riser bracket piece to a first mounting point of the motherboard, and to move between a latched position and an unlatched position. The second riser bracket piece is coupled to the first riser bracket piece. The second latch is configured to couple the second riser bracket piece to a second mounting point of the motherboard, and move between a latched position and an unlatched position.

A dry-coated zero valent iron (ZVI) based material that provides for treatment of dissolved phase chlorinated solvents and the Dense-Non-Aqueous-Phase Liquids (DNAPLs) of these solvents when present as pure solvent in groundwater systems when mixed as a slurry with water. The ZVI particles are individually coated with a hydrophobic, oleophilic vegetable oil or similar material. The coated ZVI particles, when emplaced in groundwater systems provides for rapid adsorption of both dissolved phase and DNAPLs into the oleophilic coating, promoting direct contact with the ZVI surface, providing for an abiotic surface reduction of the chlorinated solvents by the ZVI. The coating protects the reactive surfaces of the ZVI from passivation and oxidation during both preparation of the slurry and delivery of the slurry to the subsurface. The dry-coated ZVI product further includes dispersing and thickening agents that allow for mixing and delivery of the dry-coated ZVI product to the subsurface.

A filtering medium, a method for the production thereof, the use of said filtering medium and a method for reducing the content of multiple contaminants simultaneously in fluids by means of said filtering medium, wherein said filtering medium has or includes at least one of the following: a mixture (A) containing a major part of an iron-based powder and a minor part of a silver powder, an iron-silver powder alloy (B), and an iron-based porous and permeable composite containing silver (C).

An atmospheric water harvesting material includes a deliquescent salt, a photothermal agent, and a polymeric hydrogel matrix containing the deliquescent salt and photothermal agent.

A solid recovery material for carbon dioxide includes from 1% by weight to 99% by weight of sodium ferrite and from 1% by weight to 99% by weight of porous material. The material has an average particle diameter of 1 mm to 10 mm, and having a specific surface area of 5 m.sup.2/g to 1500 m.sup.2/g. An axial ratio of an average major axis diameter to an average minor axis diameter of primary particles of the sodium ferrite is from 1 to 2.

A method of fabricating a magnetically-controlled graphene-based micro-/nano-motor includes: (a) mixing FeCl.sub.3 crystal powder with deionized water to obtain a FeCl.sub.3 solution; (b) completely immersing a carbon-based microsphere in the FeCl.sub.3 solution; transferring the carbon-based microsphere from the FeCl.sub.3 solution followed by heating to allow crystallization of FeCl.sub.3 on the surface of the carbon-based microsphere to obtain a FeCl.sub.3-carbon-based microsphere; (c) heating the FeCl.sub.3-carbon-based microsphere in a vacuum chamber until there is no moisture in the vacuum chamber; continuously removing gas in the vacuum chamber and introducing oxygen; and treating the FeCl.sub.3-carbon-based microsphere with a laser in an oxygen-enriched environment to obtain the magnetically controlled graphene-based micro-/nano-motor. A magnetically-controlled graphene-based micro-/nano-motor is further provided.

The present subject matter illustrates a zero-valent metal suspension in non-aqueous phase. The suspension comprises 41 wt. % of a plurality of zero-valent iron particles; 0.1 wt % of a surfactant; 36 wt. % of an oil; and 23 wt. % of a thickening agent.

Systems, devices, and techniques described herein relate to iron-based desalination of water. In some cases, an inflow of water including chlorine and sodium can be received. A plurality of iron nanoparticles may capture the chlorine and the sodium. The iron nanoparticles may at least partially include Zero Valent Iron (ZVI). An outflow of the water may be emitted. The chlorine and the sodium may be omitted from the outflow.

Methods of sulfurizing metal containing particles in the absence of hydrogen are described. One method includes contacting a bed of metal containing particles with a gaseous stream comprising hydrogen sulfide and inert gas under reaction conditions sufficient to produce sulfided metal containing particles. The gaseous stream is introduced into a vertical reactor at an inlet positioned at the bottom portion of the reactor and any unreacted hydrogen sulfide and inert gas is removed at an outlet positioned above the inlet. The sulfided metal containing particles can be removed from the reactor and stored.

Disclosed is a method of decontamination by exposing a zirconium oxy(hydroxide) aerogel to a liquid, vapor, or gaseous sample suspected of containing a phosphonate compound. The aerogel may be doped with Fe.sup.3+ ions, Ce.sup.3+ ions, or SO.sub.4.sup.2− ions. The aerogel may be made by: providing a solution of ZrCl.sub.4; FeCl.sub.3, CeCl.sub.3, or Zr(SO.sub.4).sub.2; and a solvent; adding a cyclic ether to the solution to form a gel; infiltrating the gel with liquid carbon dioxide; applying a temperature and pressure to form supercritical fluid carbon dioxide; and removing the carbon dioxide for form an aerogel.