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:
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:
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:
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.
Abstract:
Provided herein are methods and compositions for determining and reporting carbon dioxide sequestered and/or carbon dioxide avoided in operations involving concrete, including concrete raw material transport, concrete production, and concrete use.
Abstract:
Provided herein are compositions and methods for carbonating wash water (reclaimed water) produced in the manufacture and use of concrete, and subsequent uses of the carbonated reclaimed water, including its use in production and use of further batches of concrete.
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.