My project seeks to remove carbon dioxide from the atmosphere with a novel direct air capture technology which captures the carbon dioxide with hydroxides. The carbonates are then heated with renewable solar concentrated power to release pure carbon dioxide which is pumped into greenhouses of crops or beds of azolla fern (one of the world’s fastest biomass-producing plants which absorbs huge amounts of carbon dioxide). The azolla is used on this city farm as biofertilizer, a feedstock for animals and as a human superfood. The produce grown in the greenhouses will be sold at the local food market on-site or used in stalls preparing fresh healthy meals to be consumed in the community food hall.
In terms of geometry, this project explores biomimicry by taking the rhombic dodecahedron lattice from the efficient honeycomb structure to aggregate the hexagonal structure. As the project site is utilising the space above the railway tracks, the design is parametrically driven so that the lattice can flow along the railway lines and the geometry can be adapted to any tracks in London.
The lattice design and carbon sequestration come together to create Carbonquest which is a carbon negative city farm with food halls and markets.