A method for producing a modified sawdust sorbent. The method involves sulfonating sawdust with sulfuric acid and oxidizing the sulfonated sawdust with hydrogen peroxide. The method yields a modified sawdust sorbent containing sulfonated and oxidized cellulose. The modified sawdust sorbent has a higher surface area, higher organic dye adsorption capacity, and more rapid organic dye adsorption rate than unmodified sawdust. Also disclosed is a method of using the modified sawdust sorbent for organic dye removal from water.

A mobile phase including a lithium salt flows through a stationary phase including an oxygenated metal compound with affinity to the lithium salt through a Lewis acid-Lewis base interaction so that the oxygenated metal compound captures the lithium salt through the Lewis acid-Lewis base interaction. An eluent flows through the stationary phase to release the lithium salt captured by the oxygenated metal compound into the eluent. The eluent includes a Lewis base or a Lewis acid that disrupts the Lewis acid-Lewis base interaction between the lithium salt and the oxygenated metal compound. The eluent including the released lithium salt is collected after the eluent flows through the stationary phase.

An adsorbent for wastewater treatment includes titanium hexametaphosphate; the titanium hexametaphosphate is mainly prepared from hexametaphosphate and titanium salt. The adsorbent is an aggregate of micron or nanometer particles, with a large surface area and a good adsorption performance. The adsorbent, as a wastewater treatment agent, may effectively remove thallium contaminants in various water bodies such as underground water, surface water, chemical wastewater and mine wastewater at a removal rate of 99.8%; and the adsorbent has a good removal capability for heavy metals in water such as cadmium, plumbum, copper, stibium, cesium and uranium. The adsorbent has a wide applicable PH value range, and especially has a good adsorption capacity, stability and heat resistance under acidic conditions.

The present disclosure discloses a cellulose nanocrystal-supported sodium alginate adsorbent and use thereof in enriching organic phosphorus in wastewater, belonging to the technical field of environmental engineering. Cellulose nanocrystals are prepared from papermaking deinking sludge through chemical conditioning, drying, crushing, chemical oxidation and microwave assisted separation, and then supported on alginate under weakly acidic conditions to provide the cellulose nanocrystals with the ability to enrich organic phosphorus in wastewater. By using this method, the content of organic phosphorus in the wastewater can be significantly reduced, the total phosphorus in the effluent can be reduced, and the wastewater treatment effluent can satisfy the discharge standard. The enriched organic phosphorus can be recycled as a phosphorus resource through incineration. In addition, the papermaking deinking sludge is made into the product with a high added value, so the applicability of the papermaking deinking sludge is broadened. The present disclosure has high feasibility.

The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a novel process for preparing a solid crystalline material formed preferably in extrudate form, of formula (LiCl).sub.x.2Al(OH).sub.3,nH.sub.2O with n being between 0.01 and 10, x being between 0.4 and 1, comprising a step a) to precipitate boehmite under specific conditions of temperature and pH, a step to place the precipitate obtained in contact with a specific quantity of LiCl, at least one forming step preferably via extrusion, said process also comprising a final hydrothermal treatment step, all allowing an increase in lithium adsorption capacity and in the adsorption kinetics of the materials obtained compared to prior art materials, when used in a process to extract lithium from saline solutions.

The present invention covers a novel method for creating an adsorbent and the resulting novel adsorbent. The method may be used to remove pollutants/unwanted chemicals from water, air, other gases, biological fluids (such as blood, urine, lipids, protein fluids), and other fluids (such as fuel). The adsorbent may be used to remove heavy metals (for example, lead), organic pollutants, inorganic non-meal pollutants (for example, nitrates and bromates). Accordingly, the current invention has many applications including but not limited to water treatment, wastewater treatment, biomedical fluid treatments, gas cleanup, and fuel (oil, gas) cleanup.

Methods making a metal-organic framework extrudate in an extruder comprising the steps of: (a) mixing a metal-organic framework material with an extrusion aid to form a metal-organic framework extrudate mixture; and (b) extruding the metal-organic framework mixture in the extruder to produce the metal-organic framework extrudate where the pressure within the extruder is reduced between about 10% to about 55% when compared to pressure within the extruder when extruding the metal-organic framework material without the extrusion aid. The extrusion aid can be a liquid extrusion aid, a solid extrusion aid and/or a polymeric extrusion aid.

The present invention relates to a specific continuous process for preparing a zeolitic material having a framework structure type selected from the group consisting of MFI, MEL, IMF, SVY, FER, SVR, and intergrowth structures of two or more thereof, preferably an MFI- and/or MEL-type framework structure, comprising Si, Ti, and O, and to a zeolitic material as obtainable and/or obtained according to said process. Further, the present invention relates to a process for preparing a molding, and to a molding obtainable and/or obtained according to said process. Yet further, the present invention relates to a use of said zeolitic material and molding.

The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a new method for the preparation of a crystallized and shaped solid material, preferably in extruded form, of the formula (LiCl).sub.x.2Al(OH).sub.3,nH.sub.2O, wherein n is between 0.01 and 10, x is between 0.4 and 1, wherein it comprises a step a) of precipitation of boehmite under specific temperature and pH conditions, a step of bringing into contact the precipitate obtained with LiCl, at least one acid extrusion-kneading shaping step, wherein the method also comprises a final hydrothermal treatment step, all of which makes it possible to increase the lithium adsorption capacity, the adsorption kinetics, as well as the lithium/boron selectivity of the materials obtained with respect to the materials of the prior art, when it is used in a lithium extraction method of saline solutions.

A manufacturing process that includes spray-drying a liquid composition based on liquid residues derived from a chemical extraction of clinker to form a material with a high specific surface area. Also, a material based on clinker residues having a high specific surface area ranging from 200 m.sup.2.g.sup.−1 to 900 m.sup.2.g.sup.−1 and a mesopore size ranging from 2 nm to 50 nm. Further, the use of a material having a high specific surface area for the absorption of pollutants species.