[Object]To provide an adsorbent, an adsorbent sheet, and a carbon/polymer composite for adsorbing a virus having further improved virus adsorption capability. [Solving Means] An adsorbent for adsorbing a virus according to the present invention has a specific surface area value as measured by the nitrogen BET method of 10 m.sup.2/g or more and a pore volume as measured by the BJH method of 0.1 cm.sup.3/g or more. An adsorbent sheet for adsorbing a virus according to the present invention includes a porous carbonaceous material having a specific surface area value as measured by the nitrogen BET method of 10 m.sup.2/g or more and a pore volume as measured by the BJH method of 0.1 cm.sup.3/g or more. A carbon/polymer composite for adsorbing a virus according to the present invention includes a porous carbonaceous material having a specific surface area value as measured by the nitrogen BET method of 10 m.sup.2/g or more and a pore volume as measured by the BJH method of 0.1 cm.sup.3/g or more; and a binder.

A sorbent material is disclosed for the one-step separation of bio-macromolecules in a single pass extraction of DNA from complex mixtures of molecules and chemicals. In one embodiment, the sorbent material comprises a silanized material at least partially coated or formed with a polymer selected from the group consisting of a poly(aryl methacrylate), a poly(aryl acrylate), a poly(heteroaryl methacrylate, a poly(heteroaryl acrylate) and a copolymer thereof.

There is provided an absorbent for decreasing the leakage of halogen compound gases in subsequent processes, at high temperatures and in the presence of high concentrations of water vapor in the process of heating and gasifying a fuel, such as coal, to produce a synthesis gas.

The adsorbent includes a halogen compound absorbent containing 30 to 90% by mass of a basic calcium compound and 10 to 70% by mass of a metal compound other than basic calcium compounds and/or of a clay mineral. A method for producing synthesis gas using the absorbent is also disclosed.

An insoluble thin hydroxide shell is synthesized on the surface of nanoscale zero-valent iron (NZVI), using a rate-controlled deprotonation method. The hydroxide coated NZVI remains suspended in aqueous phase better than the prior art and can be used to remove groundwater contaminants.

The present invention relates to a zeolite absorbent comprising at least one FAU zeolite with hierarchical porosity and comprising barium or barium and potassium, and the external surface area of which is greater than 20 m.sup.2.Math.g.sup.−1, and the non-zeolite phase content being between 6% and 12% by weight with respect to the total weight of the absorbent. The present invention also relates to the use of such a zeolite absorbent as an adsorption agent, as well as the method for separation of para-xylene from aromatic isomer fractions with 8 carbon atoms.

An object of the present invention is to provide a porous silica powder suitable for, for example, a gas chromatography support, and the porous silica powder has an average pore diameter of 0.5 to 10 μm as determined by a mercury intrusion method, a volume of pores having a 100 nm or smaller pore diameter of 0.2 cm.sup.3/g or less as determined by a nitrogen gas adsorption method, a specific surface area of 0.5 to 100 m.sup.2/g as determined by a nitrogen gas adsorption method, and a particle size distribution of 10 to 1000 μm.

The present invention is related to a process for manufacturing a sorbent suitable for a use in a circulating dry scrubber device comprising the steps of: providing quicklime and water in an hydrator; slaking said quicklime via a non-wet route in the hydrator; collecting a lime based sorbent at an exit of the hydrator. The process is characterized in that it comprises a further step of adding at least a first additive comprising: a compound comprising silicon, and/or, a compound comprising aluminum, and/or a compound comprising silicon and aluminum before or during said slaking step, at a molar ratio between silicon or aluminum or a combination thereof and the calcium provided to said hydrator equal to or below 0.2 and equal to or above 0.02. In some other aspects, the present invention is related to a sorbent, a premix, and a flue gas treatment process.

The present invention relates to an adsorbent comprising an alumina support and at least one alkali element, said adsorbent being obtained by introducing at least one alkali element, identical to or different from sodium, onto an alumina support the sodium content of which, expressed as Na.sub.2O equivalent, before the introduction of the alkali element or elements, is comprised between 1000 and 5000 ppm by weight with respect to the total weight of the support. The invention also relates to processes for the preparation of said adsorbent and use thereof in a process for the elimination of acidic molecules such as COS and/or CO.sub.2.

The invention relates to a method for separating meta-xylene from C8 aromatic fractions, using a zeolitic adsorbent based on sodium-exchanged or sodium-and-lithium-exchanged agglomerated crystals of zeolite Y, with a large external surface area.

Compositions containing a porous organic polymer and a heavy metal chelating moiety are provided for binding heavy metals, for example in remediation and purification. The compositions can be stable and recyclable. The compositions can contain heavy metal chelating moieties such as a thiol, a sulfide, an amine, a pyridine, or a combination thereof. The compositions can bind heavy metals such as lead, cadmium, and mercury. The compositions can have a large surface area greater than about 20 m.sup.2/g. The compositions can be used for remediation and purification to remove heavy metals from a solution. The compositions can have a maximum metal uptake capacity of more than 500 mg g.sup.−1 and/or a metal distribution coefficient of at least 1×10.sup.7 mL g.sup.−1 at 1 atm and 296 K. Methods of making the compositions are provided. Methods of binding heavy metals in remediation and purification are also provided.