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PRODUCTION OF METAL CARBONATE SOIL AMENDMENT FROM METAL SLAG
Disclosed herein are methods of forming a soil amendment from metal slag, the method may comprise: increasing sodium in a bentonite clay by reacting bentonite clay and sodium salt to provide ion-exchanged sodium bentonite clay, wherein the bentonite clay comprises both sodium and calcium; feeding carbon dioxide through a reactor containing a mixture of the metal slag and the ion-exchanged sodium bentonite clay; wherein sodium ions of the ion exchanged bentonite clay transfers the carbon dioxide to a calcium silicate phase of the metal slag; reacting the ion-exchanged sodium bentonite clay with calcium silicate to consume the sodium carbonate of the ion-exchanged sodium bentonite clay and provide sodium silicate and calcium carbonate; reacting the sodium silicate to provide sodium carbonate and silicon dioxide; and combining the calcium carbonate and silicon dioxide to form the soil amendment, wherein the metal slag is a calcium slag silicate.
PRODUCTION OF METAL CARBONATE SOIL AMENDMENT FROM METAL SLAG
Disclosed herein are methods of forming a soil amendment from metal slag, the method may comprise: increasing sodium in a bentonite clay by reacting bentonite clay and sodium salt to provide ion-exchanged sodium bentonite clay, wherein the bentonite clay comprises both sodium and calcium; feeding carbon dioxide through a reactor containing a mixture of the metal slag and the ion-exchanged sodium bentonite clay; wherein sodium ions of the ion exchanged bentonite clay transfers the carbon dioxide to a calcium silicate phase of the metal slag; reacting the ion-exchanged sodium bentonite clay with calcium silicate to consume the sodium carbonate of the ion-exchanged sodium bentonite clay and provide sodium silicate and calcium carbonate; reacting the sodium silicate to provide sodium carbonate and silicon dioxide; and combining the calcium carbonate and silicon dioxide to form the soil amendment, wherein the metal slag is a calcium slag silicate.
PRODUCTION OF METAL CARBONATE SOIL AMENDMENT FROM METAL SLAG
HERSTELLUNG VON METALLCARBONAT-BODENVERBESSERUNGSMITTEL AUS METALLSCHLACKE
PRODUCTION D'AMENDEMENT DE SOL À BASE DE CARBONATE MÉTALLIQUE À PARTIR DE LAITIER MÉTALLIQUE
AL-RABHI MOHAMED (author) / MAMEDOV AGHADDIN (author) / HEGDE RAVI (author)
2024-08-28
Patent
Electronic Resource
English
IPC:
C05D
INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C
,
Anorganische, nicht von den Unterklassen C05B, C05C umfasste Düngemittel
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C04B
Kalk
,
LIME
/
C05G
Mischungen aus Düngemitteln, die als einzelne von verschiedenen Unterklassen der Klasse C05 umfasst werden
,
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05
PRODUCTION OF METAL CARBONATE SOIL AMENDMENT FROM CALCIUM SLAG SILICATE
| European Patent Office | 2024