A rotor wind turbine blades with attached mantle peridotite panel available to capture CO.sub.2 in air while the blades are rotating powers by the wind. Due to presence of Ca.sup.+ and Mg.sup.+ in the mantle peridotite glass cell, the panel composed of glass cells can conduct sequestration of carbon dioxide in air and the product of CO.sub.2 sequestration is mineralized carbon. Another means of CO.sub.2 sequestration in air is by placing the mantle peridotite panel at the top of the wing structure of plane and capture the CO.sub.2 while the plane is flying.

A thermochemical energy storage system and method of storing thermal energy are described. The energy storing system described herein comprises a reactor comprising: a) a reactor with a CO.sub.2 sorbent including MgO; and b) a supercritical CO.sub.2 source with supercritical CO.sub.2 and H.sub.2O, wherein the supercritical CO.sub.2 source is in fluid communication with the reactor and the CO.sub.2 sorbent including MgO to allow flow of the supercritical CO.sub.2 and H.sub.2O between the supercritical CO.sub.2 source and the reactor, thereby allowing contact of CO.sub.2 with the CO.sub.2 sorbent comprising MgO.

This disclosure is related to systems, methods, apparatuses, and techniques for generating water using waste heat. In certain embodiments, a system includes a water generating unit and a waste-heat-generating-system. The water generating unit can be configured to generate the water and comprises a desiccation device and a condenser coupled to the desiccation device. The waste-heat-generating-system can generate the waste heat when operating or is use. The water generating unit can be configured to use waste heat generated by the waste-heat-generating-system to generate the water.

An exemplary sequestering system and method are provided for carbon dioxide sequestration using at least one in-situ chemical species in water to produce at least one reaction product that sequesters carbon dioxide. In one embodiment, the automated system includes a reaction vessel and one or more diffusers. In one implementation, the reaction vessel is configured to receive a water supply, wherein the water includes at least one in-situ chemical species, and wherein the reaction vessel is further configured to receive a gas supply. The one or more diffusers are configured to receive at least a portion of the gas supply to diffuse carbon dioxide gas into at least a portion of the water, and wherein the reaction vessel is further configured to contain a mixture to allow the at least one in-situ chemical species to react with the carbon dioxide gas and forming at least one reaction product.

A plant and a method for the production of hydrogen and bicarbonate. The plant includes a gasifier, a reformer, a direct contact exchanger and an apparatus for the production of bicarbonate. The plant is suitable for receiving fuel, oxygen, water, carbonate, brine at the inlet and for producing hydrogen, bicarbonate and calcium chloride at the outlet. The plant uses a self-cleaning direct contact heat exchanger to cool the syngas downstream of the reformer and to produce the superheated steam that feeds the gasifier: this heat exchanger allows the production of hydrogen at low costs and in modular plants.

Methods of processing magnesium silicate materials are described to produce a number of products including magnesium hydroxide. Related methods of use of processed magnesium silicate and other reaction products are described for energy production, cement manufacture and carbon sequestration. In one embodiment the method comprises subjecting a magnesium silicate source to an acid digestion; increasing the digested liquid pH to produce a magnesium salt solution; subjecting the magnesium salt solution to electrolysis; and recovering magnesium hydroxide produced from electrolysis. By-products such as silica, iron oxy(oxides) and others are also described along with further reaction products such as magnesium oxide and magnesium carbonate.

Aspects of the invention include methods of removing carbon dioxide (CO.sub.2) from a CO.sub.2 containing gas. In some instances, the methods include contacting CO.sub.2 containing gas with a bicarbonate buffered aqueous medium under conditions sufficient to produce a bicarbonate rich product. Where desired, the resultant bicarbonate rich product or a component thereof may then be stored or further processed, e.g., combined with a divalent alkaline earth metal cation, under conditions sufficient to produce a solid carbonate composition. Aspects of the invention further include systems for practicing the methods, as well as products produced by the methods.

A system for removing undesirable compounds from contaminated air includes a biofilter having an alkaline material introduction system and a fuzzy-logic based controller. A contaminant, such as hydrogen sulfide, is removed from contaminated air by passing the contaminated air through the biofilter.

Systems and methods are disclosed and include a controller and a water recovery device. The water recovery device includes a desiccant stack including a chamber defining an airflow path therein. The water recovery device includes an evaporator in communication with the desiccant stack and one or more condensers in communication with the desiccant stack. The controller is configured to set the water recovery system to one of an absorption mode and an extraction mode. The water recovery device is configured to receive ambient air in the chamber to remove water vapor using the liquid desiccant and retain the water vapor in the chamber when the water recovery system is in the absorption mode. The water recovery device is configured to remove the water vapor within the chamber when the water recovery system is in the extraction mode.

A receptacle forming a chamber partially filled with an active substance, wherein the receptacle is a body and a cap which closes the body. The cap includes a top wall with a first main side facing an interior of the chamber and a skirt formed with the first main side of the top wall. The body includes a bottom wall and a sidewall. The skirt and the sidewall surround one another in contact with each other. The walls surrounding the chamber include the bottom wall, the top wall and either the skirt or the sidewall. At least one ventilation path is provided between the skirt and the sidewall, such that the ventilation path connects the chamber with the outside atmosphere.