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  2. Solvay process - Wikipedia

    en.wikipedia.org/wiki/Solvay_process

    Variations in the Solvay process have been proposed to convert carbon dioxide emissions into sodium carbonates, but carbon sequestration by calcium or magnesium carbonates appears more promising. [ dubious – discuss ] However, the amount of carbon dioxide which can be used for carbon sequestration with calcium or magnesium (when compared to ...

  3. Calcium carbonate - Wikipedia

    en.wikipedia.org/wiki/Calcium_carbonate

    Crystal structure of calcite. Calcium carbonate is a chemical compound with the chemical formula Ca CO 3.It is a common substance found in rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls.

  4. Amorphous calcium carbonate - Wikipedia

    en.wikipedia.org/wiki/Amorphous_calcium_carbonate

    These deposits of tufa contain amorphous calcium carbonate along remains of algae and moss. Amorphous calcium carbonate (ACC) is the amorphous and least stable polymorph of calcium carbonate.

  5. Calcium oxalate - Wikipedia

    en.wikipedia.org/wiki/Calcium_oxalate

    Scanning electron micrograph of the surface of a kidney stone showing tetragonal crystals of Weddellite (calcium oxalate dihydrate) emerging from the amorphous central part of the stone (the horizontal length of the picture represents 0.5 mm of the figured original)

  6. Calcium bicarbonate - Wikipedia

    en.wikipedia.org/wiki/Calcium_bicarbonate

    Calcium bicarbonate, also called calcium hydrogencarbonate, has the chemical formula Ca(HCO 3) 2.The term does not refer to a known solid compound; it exists only in aqueous solution containing calcium (Ca 2+), bicarbonate (HCO −

  7. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    The most common means for removing water hardness rely on ion-exchange resin or reverse osmosis.Other approaches include precipitation methods, such as fluidized bed pellet softening, [6] and sequestration by the addition of chelating agents.

  8. Carbonatation - Wikipedia

    en.wikipedia.org/wiki/Carbonatation

    The carbonatation process is used in the production of sugar from sugar beets.It involves the introduction of limewater (milk of lime - calcium hydroxide suspension) and carbon dioxide enriched gas into the "raw juice" (the sugar rich liquid prepared from the diffusion stage of the process) to form calcium carbonate and precipitate impurities that are then removed.

  9. Calcium battery - Wikipedia

    en.wikipedia.org/wiki/Calcium_battery

    Calcium batteries are one of many candidates to replace lithium-ion battery technology. It is a multivalent battery.Key advantages are lower cost, earth abundance (41,500 ppm), higher energy density, high capacity and high cell voltage, [12] and potentially higher power density.