Porous solid material useful for trapping carbon dioxide in seawater comprises a mineral binder, an

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The invention relates to a porous solid system composite mineral, mainly insoluble in sea water, intended to be immersed in seamen circle, being appeared as agglomerates of a mixture of particles of mineral products taken in a hardened mineral binder whose catch resists the seamen circle. The aforementioned system can be obtained by mixture in a mixer of a binder not hardened and particles of mineral products, addition of water and hardening. The aforementioned system can be used in immersion in seamen circle for the capture, in the perennial alkaline-earth carbonate shape, of the carbon dioxide dissolved in sea water and thus reduce the content out of carbon dioxide in the atmosphere; immersed in sea water, it can thus also take part in the washing of the industrial gas effluents by capture of carbon dioxide.