CARBON DIOXIDE ADSORBENT BASED ON EGGSHELLS AND PROCESS FOR PREPARING THE SAME

The invention relates to a process for preparing a carbon dioxide adsorbent composition based on porous calcium from eggshells. The process, as claimed by the invention, consists of the steps of: washing the eggshells to remove the organic content, adding choline chloride, grinding the mixture, addi...

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Hauptverfasser: POPA DARIA GABRIELA, OANCEA FLORIN, MIHĂILĂ ELIZA GABRIELA, CONSTANTINESCU-ARUXANDEI DIANA
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The invention relates to a process for preparing a carbon dioxide adsorbent composition based on porous calcium from eggshells. The process, as claimed by the invention, consists of the steps of: washing the eggshells to remove the organic content, adding choline chloride, grinding the mixture, adding concentrated solutions of hydrochloric, lactic or formic acid, in a stoichiometric ratio, microwave synthesis of the eutectic solvent formed between calcium salts of hydrochloric, lactic or formic acids and choline chloride and drying the formed eutectic solvent, resulting in a composition with high efficiency in fixing carbon dioxide from various gaseous mixtures. Invenţia se referă la un procedeu de obţinere a unei compoziţii de adsorbent pentru bioxid de carbon pe bază de calciu poros produs din coji de ouă. Procedeul, conform invenţiei, constă în etapele: spălarea cojilor de ouă pentru îndepărtarea conţinutului organic, adăugarea de clorură de colină, măcinarea amestecului, adăugarea de soluţii concentrate de acid clorhidric, lactic sau formic, în raport stoichiometric, sinteza în câmp de microunde a solventului eutactic format între sărurile de calciu ale acizilor clorhidric, lactic sau formic şi clorura de colină şi uscarea solventului eutectic format, rezultând o compoziţie cu eficienţă ridicată în fixarea bioxidului de carbon din diferite amestecuri gazoase.