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

The present invention refers to the use of a surface-treated calcium carbonate-comprising material and/or magnesium carbonate-comprising material as oxygen scavenger; wherein the surface treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts and iron (ID-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof; and wherein the total weight of the surface treatment agent on the total surface area of the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material is from 0.01 to 40 mg/m.sup.2, based on the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material.

Materials and methods for mitigating the effects of halide species contained in process streams are provided. A halide-containing process stream can be contacted with mitigation materials comprising active metal oxides and a non-acidic high surface area carrier combined with a solid, porous substrate. The halide species in the process stream can be reacted with the mitigation material to produce neutralized halide salts and a process stream that is essentially halide-free. The neutralized salts can be attracted and retained on the solid, porous substrate.

The present invention concerns a process for the separation of a gas mixture containing CO.sub.2 and at least one inert gaseous species, comprising (a) feeding the gas mixture into an adsorption column via a first inlet located at a first side of the column, wherein the adsorption column contains a solid CO.sub.2 sorbent loaded with H.sub.2O molecules and thereby desorbing H.sub.2O molecules and adsorbing CO.sub.2 molecules, to obtain a sorbent loaded with CO.sub.2 and an inert product stream; and then (b) feeding a stripping gas comprising H.sub.2O into the adsorption column via a second inlet located at a second side which is opposite to the first inlet, thereby stripping the sorbent and desorbing CO.sub.2 molecules and adsorbing H.sub.2O molecules, to obtain a sorbent loaded with H.sub.2O and the CO.sub.2 product stream, wherein the adsorption column is re-used in step (a) after being stripped in step (b). The invention also concerns an apparatus for performing the process according to the invention.

The disclosure relates to the field of heavy metal adsorbents, and a heterogeneous agglomeration adsorbent for heavy metal adsorption, a method for preparing the same, and applications are provided. The heterogeneous agglomeration adsorbent includes the following components according to percentage by weight: 0.005% to 0.01% of polyacrylamide, 0.0005% to 0.001% of calcium chloride, 0.001% to 0.01% of coconut oil fatty acid diethanolamide, and a balance is water.

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.

The present invention relates to a regenerable hydrogen sulfide adsorbent and a preparation method thereof. The preparation method specifically includes: 1) combining meta-aluminate as an active component with activated alumina as a carrier in a manner of impregnation, spray coating or solid phase mixing to obtain a precursor; 2) aging and drying the precursor, and finally performing roasting to obtain the adsorbent; and 3) processing the adsorbent to present a specific size and shape through shaping measures to meet industrial application requirements. Compared with the prior art, the adsorbent obtained according to the present invention can achieve an efficient removal effect on hydrogen sulfide gas at a material inlet, with a concentration adaption range of 0 to 1000 ppm and an effective removal precision of 0.1 ppm or below.

A multi-functional composition of matter that is useful for injection into a flue gas stream to rapidly and efficiently remove mercury from the flue gas streams, particularly at above average flue stream temperatures of about 340° F. or higher. The multi-functional composition of matter may include a fixed carbon content of at least about 20 wt. %, a mineral content of from about 20 wt. % to about 50 wt. %, a sum of micropore plus mesopore volume of at least about 0.20 cc/g, a micropore volume to mesopore volume ratio of at least about 0.7, and a tapped density of not greater than about 0.575 g/ml. These compositions may be further characterized by number of particles per gram of the composition of matter such that the composition may have at least about 0.8 billion particles per gram, or even as many as 1.5 billion particles per gram. These physical and chemical properties may enhance (1) the oxidation reaction kinetics for the oxidation of mercury species, (2) frequency of contact events, and (3) capture and sequestration of mercury, to achieve efficient mercury capture by the composition even in high temperature flue gas streams.

The present disclosure relates to a carbon capture adapter that may attach to high air flow systems. A carbon capture adapter may utilize the air flow foundations of a high air flow system to allow for capture of unfiltered ambient air, allowing for carbon removal and the scrubbing of the unfiltered ambient air. The carbon capture adapter may comprise of carbon sensors that may detect carbon levels of the air before and after the carbon has been scrubbed or removed from the ambient air. The carbon capture adapter may capture and transform the carbon into secondary substances that may be useful unto itself, even further limiting waste and environmental damage. The carbon capture adapter will have all inputs, outputs, processes, and flows that meet all aspects of a closed loop system that is specifically designed for CCS.

Purified air is provided, having a TVOC content of from less than 5 ppb to about 500 ppb, a Biologicals content of from less than 1 CFU/M.sup.3 to 150 CFU/M.sup.3 and a Particulate content of from about 1,000 0.3 μm particles per ft.sup.3 to about 50,000 0.3 μm particles per ft.sup.3, or from about 600 0.5 μm particles per ft.sup.3 to about 500,000 0.5 μm particles per ft.sup.3.