Abstract:
A method/system for sequestering carbon dioxide from cement and lime production facilities wherein carbon dioxide from flue gases originating from cement or lime production facilities is recovered and transported to a building materials production facility where it is sequestered.
Abstract:
The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be controlled by one or more feedback mechanisms to adjust carbon dioxide delivery based on one or more characteristics of the mix or other aspects of the mixing operation.
Abstract:
Provided herein are systems and methods for use of carbon dioxide, such as carbon dioxide containing one or more contaminants, e.g., produced in processes where the carbon dioxide comes directly or indirectly from the atmosphere, in one or more systems to perform one or more processes that binds the carbon dioxide or one or more carbon dioxide reaction products with one or more reactants to produce one or more carbon dioxide sequestration products, for example, products that permanently sequester the carbon dioxide.
Abstract:
Provided herein are methods and compositions for carbonation of recycled concrete aggregates (RCA) to produce carbonated RCA. In addition, uses of the carbonated RCA, such as in building materials, and building materials containing RCA, are included. Carbonation of RCA may be used alone or may be used in combination with other carbonation processes associated with concrete manufacture, such as carbonation of wet concrete mixes and/or carbonation of concrete wash water.
Abstract:
Systems and methods for utilizing some or all of waste heat from a process in a temperature swing process to release carbon dioxide from a sorbent in a carbon dioxide capture system; the process supplying the waste heat can be a process that utilizes carbon dioxide, for example a carbon dioxide mineralization process, and in some cases the carbon dioxide released from the sorbent may be used in the carbon dioxide mineralization process.
Abstract:
A system for delivering carbon dioxide into the concrete is herein disclosed. The system comprises injection of liquid carbon dioxide via an orifice configured to convert the liquid to solid and gaseous carbon dioxide. The injection parameters are monitored and adapted via sensors which send signals to a processing unit in order to achieve a precise or reproducible dose of carbon dioxide in a desired ratio of solid to gaseous carbon dioxide.
Abstract:
Provided herein are methods, apparatus, and systems for delivering carbon dioxide as a mixture of solid and gaseous carbon dioxide to a destination.
Abstract:
The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.
Abstract:
The invention provides methods and compositions for increasing stiffness or rate of stiffening of concrete mixes by carbonation of the mix, preferably while viscosity remains at a level suitable for the intended use of the concrete mix.
Abstract:
Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.