Abstract: Materials with a porous structure including calcium carbonate and magnesium carbonate of mineral origin or from algae or pieces of mollusc shells, formed mainly by together with clays of the bentonite, a-sepiolite and aluminium silicate type. Their industrial use in the removal of acid gases and vapors in fixed and mobile beds and their use as agricultural fertilizers and for water treatment such as mineralization. These materials are shaped like hollow cylinders of the smooth or ribbed, straight, curved, regular or irregular cut macaroni type, and have parallel channels along the longitudinal axis in a number greater than 2 and less than 100 per square centimeter cross section generally known as monolith or honeycomb.