摘要:
A method for treating an MTBE-contaminated aqueous solution includes forming an adsorbent by treating fly ash with nitric acid and then doping the resultant acid-treated fly ash particles with AgNO3 and calcining. The adsorbent is used to contact an MTBE-contaminated aqueous solution to adsorb the MTBE and the adsorbent and to form a purified aqueous phase which is then separated from the adsorbent.
摘要:
In one aspect, an oxygenated hierarchically porous carbon (an “O-HPC”) is provided, the O-HPC comprising: a hierarchically porous carbon (an “HPC”), the HPC comprising a surface, the surface comprising: (A) first order pores having an average diameter of between about 1 μm and about 10 μm; and (B) walls separating the first order pores, the walls comprising: (1) second order pores having a peak diameter between about 7 nm and about 130 nm; and (2) third order pores having an average diameter of less than about 4 nm, wherein at least a portion of the HPC surface has been subjected to O2 plasma to oxygenate and induce a negative charge to the surface. In one aspect, the O-HPC further comprises metal nanoparticles dispersed within the first, second, and third order pores. Methods for making and using the metal nanoparticle-impregnated O-HPCs are also provided.
摘要:
A composite particle having 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:
The present invention provides composite material having a porous graphene-based foam matrix and comprising porous inorganic micro-particles and metal oxide nano-particles distributed throughout the foam matrix.
摘要:
The present invention relates to a novel filtration media and process for removing toxic materials from streams of air at ambient conditions using the novel filtration media. The filtration media is comprised of porous zirconium hydroxide onto which at least one reactive moiety is impregnated.
摘要:
Described herein are methods and compositions for preparing an adsorbent composition for sustained silver ion release is provided. The method comprises impregnating silver nanoparticles on an organic-templated-nanometal oxyhydroxide. Particle size of the silver nanoparticles is less than about 50 nm. The adsorbent composition is antimicrobial in water. In an aspect, the organic- templated-nanometal oxyhydroxide is organic-templated-boehmite nanoarchitecture (OTBN). The resultant adsorbent composition is used as a water filter in a water purification device.
摘要:
A leak testing device for an iodine filter according to the present embodiment includes an iodine adsorption unit including an iodine filter provided in a chamber provided in a duct, to which flue gas containing radioactive iodine is fed, and including an iodine adsorbing material that adsorbs radioactive iodine contained in the flue gas, a fluorine-containing-reagent feed unit that feeds a fluorine-containing reagent that does not contain chlorine into the duct, and a first fluorine-containing-reagent-concentration measurement unit and a second fluorine-containing-reagent-concentration measurement unit that measures a concentration of the fluorine-containing reagent on an upstream side and a downstream side of the iodine filter.
摘要:
Methods and system relate to in-situ treatment of fluid to remove a heavy metal, such as mercury. The treatment utilizes a sorbent injected into a wellbore and disposed in a flow path of the fluid being produced to above ground. The mercury retained by the sorbent upon contact with the fluid may remain within a reservoir from which the fluid is recovered.
摘要:
Structures treated with a microbiological interception enhancing agent comprising of a water-soluble cationic material having a counter ion associated therewith at specific sites on the cationic material, in combination with a biologically active metal salt, wherein the counter ion associated with the cationic material preferentially precipitates with at least a portion of the cation of the biologically active metal salt such that precipitation of the biologically active metal cation and the counter ion associated with the cationic material occurs in proximity to the cationic material are disclosed herein. The microbiological interception enhancing agent may be incorporated into articles of commerce by treating the starting materials of the structure or by applying the microbiological interception enhancing agent on to at least one surface of the article.
摘要:
Method of reducing the concentration of sulfur and/or a sulfur-containing compound in a biochemically prepared organic compound by bringing the respective organic compound into contact with an adsorbent, wherein the adsorbent is a clay doped with silver and/or a silver compound.