A5035362203- Carbon Dioxide Capture Technologies
- Phase Equilibria and Thermodynamics
- Membrane Separation and Gas Transport
- Additive Manufacturing and 3D Printing Technologies
- Pickering emulsions and particle stabilization
- Enzyme Catalysis and Immobilization
- Innovative Microfluidic and Catalytic Techniques Innovation
- Methane Hydrates and Related Phenomena
- Carbon dioxide utilization in catalysis
- CO2 Sequestration and Geologic Interactions
- Electrohydrodynamics and Fluid Dynamics
- Atmospheric and Environmental Gas Dynamics
- Climate Change Policy and Economics
- Surface Modification and Superhydrophobicity
- Energy, Environment, and Transportation Policies
- Catalytic Processes in Materials Science
- Environmental Impact and Sustainability
- 3D Printing in Biomedical Research
- Catalysts for Methane Reforming
- Global Energy and Sustainability Research
- Solar-Powered Water Purification Methods
- Ionic liquids properties and applications
- Transportation and Mobility Innovations
- Industrial Gas Emission Control
- Innovations in Concrete and Construction Materials
Lawrence Livermore National Laboratory
2013-2022
Lawrence Livermore National Security
2016-2019
Environmental Protection Agency
2009
Carnegie Mellon University
2004-2008
In contrast to conventional carbon capture systems for power plants and other large point sources, the system described in this paper captures CO2 directly from ambient air. This has advantages that emissions diffuse sources past may be captured. The objective of research is determine feasibility a NaOH spray-based contactor use an air by estimating cost energy requirements per unit A prototype constructed tested measure absorption, use, evaporative water loss compared with theoretical...
The use of automated, unmanned aerial vehicles (drones) to deliver commercial packages is poised become a new industry, significantly shifting energy in the freight sector. Here we find current practical range multi-copters be about 4 km with battery technology, requiring network urban warehouses or waystations as support. We show that, although drones consume less per package-km than delivery trucks, additional warehouse required and longer distances traveled by package greatly increase...
Drawbacks of current carbon dioxide capture methods include corrosivity, evaporative losses and fouling. Separating the solvent from infrastructure effluent gases via microencapsulation provides possible solutions to these issues. Here we report materials that may enable low-cost energy-efficient flue gas. Polymer microcapsules composed liquid carbonate cores highly permeable silicone shells are produced by microfluidic assembly. This motif couples capacity selectivity sorbents with high...
The popularity of additive manufacturing has increased interest in the use triply periodic minimal surfaces (TPMS) engineering applications due to their potential for superior mechanical, heat and mass transfer properties. Periodic nodal (PNS) are a class continuous that also divide space into non-intersecting, smooth domains like TPMS can potentially have To evaluate performance, this manuscript we characterize flow properties seven PNS based structures by numerically computing friction...
Abstract An industrial process for the selective activation of methane under mild conditions would be highly valuable controlling emissions to environment and utilizing vast new sources natural gas. The only catalysts conversion methanol are monooxygenases (MMOs) found in methanotrophic bacteria; however, these enzymes not amenable standard enzyme immobilization approaches. Using particulate monooxygenase (pMMO), we create a biocatalytic polymer material that converts methanol. We...
Critical to the success of three-dimensional (3D) printing living materials with high performance is development new ink and 3D geometries that favor long-term cell functionality. Here we report use freeze-dried live cells as solid filler enable a material system for direct writing catalytically active microorganisms tunable densities various self-supporting porous geometries. Baker's yeast was used an exemplary whole-cell biocatalyst, printed structures displayed resolution, large scale,...
Zinc(II) cyclen, a small molecule mimic of the enzyme carbonic anhydrase, was evaluated under rigorous conditions resembling those in an industrial carbon capture process: high pH (>12), nearly saturated salt concentrations (45% K2CO3) and elevated temperatures (100-130 °C). We found that catalytic activity zinc cyclen increased with increasing temperature retained after exposure to 45% w/w K2CO3 solution at 130 °C for 6 days. However, bicarbonate markedly reduced catalyst. Our results...
Purpose-designed, water-lean solvents have been developed to improve the energy efficiency of CO<sub>2</sub> capture from power plants, including CO<sub>2</sub>-binding organic liquids (CO<sub>2</sub>BOLs) and ionic (ILs). Many these are highly viscous or change phases, posing challenges for conventional process equipment. Such problems can be overcome by encapsulation. Micro-Encapsulated Sorbents (MECS) consist a CO<sub>2</sub>-absorbing solvent slurry encased in spherical,...
We present a multilayer dropmaker geometry that enables the modular fabrication of microfluidic devices containing precisely patterned channel surface wettability. The platform is used for scalable production uniform double emulsion drops.
Advanced structured packing geometries fabricated with 3D printing were used for absorber CO 2 capture a liquid solvent. Compared to conventional packing, they had greatly enhanced (90–140%) effective surface areas and comparable hydrodynamics.
We encapsulated six solvents with novel physical and chemical properties for CO2 sorption within gas-permeable polymer shells, creating Micro-Encapsulated Sorbents (MECS), to improve the absorption kinetics handling of postcombustion capture from flue gas. The were sodium carbonate (Na2CO3) solution, uncatalyzed two different promoters, ionic liquid (IL) solvents, one CO2-binding organic (CO2BOL). subjected each MECS multiple regeneration cycles measured working capacity as a function time...
Strategies to remove carbon from the atmosphere are needed meet global climate goals. Promising strategies include conversion of waste biomass hydrogen, methane, liquid fuels, or electricity coupled with CO 2 capture and storage (CCS). A key challenge for these projects is need connect geographically dispersed supplies geologic sites by either transporting . We assess cost transport CCS using publicly available data trucking, rail, pipelines in United States. find that large (order 1 Mt/yr...
For widespread adoption of carbon capture and storage to fight climate change, major reductions in both the energy use capital cost are needed. Many purpose-designed, water-lean solvents have recently been developed improve energy-efficiency capture. These solvents, including ionic liquids (ILs), shown promise for substantially lower demand post-combustion but drawbacks like high viscosity solid precipitates. Micro-encapsulation is a technique where solvent encased small (∼500 μm diameter),...
We have developed polymer composite inks that may be three-dimensionally (3D) printed to produce new reactor designs for CO2 capture. These are composed of solid sodium carbonate particles dispersed within an uncured silicone and using direct ink writing (DIW). After printing, the is cured, structures hydrated form aqueous domains throughout silicone. enable high absorption rates by creating with a surface area solvent per unit volume in structures. results demonstrate order-of-magnitude...
Many attractive options for carbon capture solvents suffer from high viscosity, making it difficult to generate large surface areas fast absorption, and amine-based aqueous liquids potential environmental impacts solvent release. As part of a US-DOE ARPA-E program, team the University Illinois Urbana-Champaign, Babcock Wilcox, Lawrence Livermore National Laboratory have created new encapsulated form in which operating fluid, amines or carbonates our tests date, is enclosed thin polymer shell...
A potential approach to reduce energy costs associated with carbon capture is use external and renewable sources. The photothermal release of CO2 from monoethanolamine mediated by nanoparticles a unique solution this problem. When combined light-absorbing nanoparticles, vapor bubbles form inside the without heating bulk solvent. mechanism which released remained unclear, understanding process would improve efficiency release. Here we report different cosolvents or regeneration captured...