An adsorbent and a use thereof are provided. The adsorbent is a metal-organic framework (MOF) MIL-125; the MOF MIL-125 has an external specific surface area (SSA) of 160 m.sup.2/g to 220 m.sup.2/g; and the MOF MIL-125 includes a micropore with an area of 1,000 m.sup.2/g to 1,500 m.sup.2/g. The external SSA of the MOF MIL-125 is much higher than an external SSA of the traditional MIL-125, which has promising application prospects in the adsorptive separation of xylene isomers and exhibits high selectivity for p-xylene.

Provided herein are an adsorbent and method of treating water using the adsorbent. The adsorbent includes thermally- and chemically-treated lignite coal. The method includes contacting wastewater with the treated lignite coal.

An activated carbon sorbent composition comprising activated carbon and a passivation agent, wherein the activated carbon sorbent composition exhibits reduced self-heating or auto-ignition properties as compared to the activated carbon. The activated carbon sorbent composition may be utilized to sequester contaminants such as mercury from a flue gas stream. The passivation agent includes a sulfur species, and may be a sulfur oxide compound, a sulfide compound, or an organic sulfur compound. Methods for the manufacture of the activated carbon sorbent composition and for the sequestration of contaminants in a flue gas stream using the composition are also disclosed.

Immobilized diluents in a smoking article are provided, wherein diluents can be immobilized through absorption and/or adsorption of the diluents into immobilizing materials, such as sorbents like silica gels. By immobilizing diluents, the diluents can be available for vaporization, while still being protected from migration and/or loss of the diluents in a smoking article.

Methods for the manufacture of sorbent compositions, sorbent compositions and methods for using the sorbent compositions. The methods include the utilization of an acidic halogen solution as a source of a halogen species that is dispersed on a solid sorbent. The use of the acidic halogen solution results in a highly active halogen species that demonstrates improved efficacy for the removal of heavy metal(s) from a flue gas. The sorbent composition includes a substantially amorphous halogen species associated with a solid sorbent such as powdered activated carbon (PAC).

The present invention concerns a process for manufacturing a porous carbonaceous monolith structure comprising the steps of (i) introducing a precursor material comprising particles comprising a halogenated polymer having a melting point in a mold; (ii) forming a shaped body comprising aggregates of the particles of the precursor material, by concurrently applying to the precursor material a pressure P ranging from 10 to 300 bars when the halogenated polymer is a vinylidene chloride homopolymer and from 10 to 150 bars when the halogenated polymer differs from a vinylidene chloride homopolymer, and maintaining the precursor material at a temperature T.sub.1 ranging from T.sub.1,min=20° C. to T.sub.1,max=T.sub.m−50° C. wherein T.sub.m is the melting point of the halogenated polymer, and; (iii) optionally cooling then demolding the shaped body; (iv) introducing the shaped body in a furnace; (v) causing the pyrolysis of the halogenated polymer in the furnace until the porous carbonaceous monolith structure is obtained.

A polymer/activated carbon composite made up of a branched polyethylenimine and magnetic cores involving Fe.sub.3O.sub.4 disposed activated carbon. The magnetic cores have activated carbonyl groups on the surface. A process for removing organic dyes, such as methyl red, as well as heavy metal ions from a polluted aqueous solution or an industrial wastewater utilizing the composite is introduced. A method of synthesizing the polymer/activated carbon composites is also specified.

A polymer/activated carbon composite made up of a branched polyethylenimine and magnetic cores involving Fe.sub.3O.sub.4 disposed activated carbon. The magnetic cores have activated carbonyl groups on the surface. A process for removing organic dyes, such as methyl red, as well as heavy metal ions from a polluted aqueous solution or an industrial wastewater utilizing the composite is introduced. A method of synthesizing the polymer/activated carbon composites is also specified.

This disclosure relates generally relates to methods and systems useful for continuous synthesis of materials in super-critical carbon dioxide (sCO.sub.2). More particularly, this disclosure relates to methods and systems useful for continuous synthesis of coordination polymers, such as metal-organic frameworks (MOFs) and/or covalent organic frameworks (COFs), in sCO.sub.2.

Provided herein are electret-MOF filter embedded with particles derived from metal-organic frameworks (MOF) and their methods of manufacturing. The methods of manufacturing the electret-MOF filter can include suspending MOF particles in a solvent to form a MOF particle mixture, contacting a charged polymeric fibrous web with the MOF particle mixture, and coating the charged polymeric fibrous web with the MOF particles by flowing the MOF particle mixture through an inverse side of the polymeric fibrous web. The disclosed coating method can deposit MOF particles uniformly, without formation of films at interstitial spaces between fibers. The electret-MOF filter can simultaneously remove fine particulate matters (PMs) and hazardous gaseous pollutants (including volatile organic compounds (VOCs)) with high particle holding and gas adsorption capacities, and with very low air resistance.