A composition for use in brine formation comprising a deliquescent desiccant, urea, and an optional component selected from the group consisting of starch, citric acid, clay, glucose, and a combination thereof. Methods of making and using the composition are provided. The composition may be pressed into tablet form. The composition may be used in a dehumidifying device.

A tablet having a deliquescent desiccant and a fragrance encapsulated on or within a binding agent. The tablet is in a pressed form. A method of making a tablet involves providing a deliquescent desiccant, encapsulating a fragrance by spray drying the fragrance on a carbohydrate, combining the deliquescent desiccant and the carbohydrate encapsulated fragrance, and pressing the combination into the tablet.

A regenerable air scrubbing system comprises of an air flow assembly with replaceable cartridges arranged in a parallel orientation and designed for easy insertion and removal of the cartridges. The cartridge design enhances the contact area, reduces the pressure drop, and readily allows the design of similar assemblies with different airflow throughputs using the same cartridge, while facilitating easy replacement of the sorbent in the field. The cartridge can be partitioned into smaller compartments, improving the mechanical properties of the cartridge and the uniformity of the sorbent distribution.

A method for removing carbon dioxide directly from ambient air, using a sorbent under ambient conditions, to obtain relatively pure CO.sub.2. The CO.sub.2 is removed from the sorbent using process heat, preferably in the form of steam, at a temperature in the range of not greater than about 130 C., to capture the relatively pure CO.sub.2 and to regenerate the sorbent for repeated use. Increased efficiency can be achieved by admixing with the ambient air, prior to contacting the sorbent, a minor amount of a preferably pretreated effluent gas containing a higher concentration of carbon dioxide. The captured carbon dioxide can be stored for further use, or sequestered permanently. The above method provides purified carbon dioxide for further use in agriculture and chemical processes, or for permanent sequestration.

A system and method for producing biogas (methane) from a mixture of poultry manure and methanogens through an anerobic digestion process which makes use of jute filters within the chamber to absorb excess ammonium nitrogen from the mixture of poultry manure.

A preparation method of a high-absorptivity chitosan/bamboo activated carbon composite aerogel include: evenly mixing a chitosan suspension and bamboo activated carbon; dropwise adding glacial acetic acid and stirring to form a solution; dropwise adding a glutaraldehyde solution, and stirring until cross-linking of chitosan is completed; and freezing the obtained liquid in shape, and then performing freeze-drying by means of a vacuum freeze dryer to obtain a chitosan/bamboo activated carbon composite aerogel. The natural, environmentally friendly and degradable chitosan is used as the raw material, bamboo activated carbon is adhered to the chitosan, and the freeze-drying technique is used to prepare the aerogel, so that the bamboo activated carbon is uniformly dispersed and fixed in the three-dimensional space of the aerogel, and the prepared composite aerogel has a high specific surface area and a high porosity, and a high PM2.5 adsorption capacity.

An atmospheric CO.sub.2 capture system includes a compartment housing a solid CO.sub.2 sorbent, an exchange fluid including a chemical component with selectivity towards CO.sub.2, and an electrochemical cell in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO.sub.2 from incoming air onto the solid CO.sub.2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO.sub.2 from the saturated sorbent and bind the detached CO.sub.2 to the chemical component; and a third state of regenerating the chemical component by detaching CO.sub.2 from the chemical component in the electrochemical cell and releasing the CO.sub.2 from the system.

An atmospheric CO.sub.2 capture system includes a compartment housing a solid CO.sub.2 sorbent, an exchange fluid including a chemical component with selectivity towards CO.sub.2, and an electrochemical cell in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO.sub.2 from incoming air onto the solid CO.sub.2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO.sub.2 from the saturated sorbent and bind the detached CO.sub.2 to the chemical component; and a third state of regenerating the chemical component by detaching CO.sub.2 from the chemical component in the electrochemical cell and releasing the CO.sub.2 from the system.

Organosilica materials, which are a polymer of at least one independent monomer of Formula [Z.sup.1OZ.sup.2OSiCH.sub.2].sub.3 (I), wherein Z.sup.1 and Z.sup.2 each independently represent a hydrogen atom, a C.sub.1-C.sub.4 alkyl group or a bond to a silicon atom of another monomer and at least one other monomer is provided herein. Methods of preparing and processes of using the organosilica materials, e.g., for gas separation, color removal etc., are also provided herein.

A method of delivering or sequestering anesthetic agents by adsorption of such agents by porous partially fluorinated compounds which display high weight adsorption capacities.