The increase in the amount of carbon dioxide (CO 2 ) emissions related to many anthropic activities is a persistent and growing problem. During the last years, many solutions have been set out, none of them being the ultimate one. Investigators agree on the need of a synergic approach to the problem, in terms of many complementary methods of sequestration that, combined with the reduction of production, will be able to decrease the concentration of the CO 2 in the atmosphere. In this work, we explore the use of a green reaction to trap the CO 2 into a stable crystalline phase (weddellite) resorting to a multidisciplinary approach. CO 2 is reduced and precipitated as calcium oxalate through vitamin C as a sacrificial reductant. Calcium oxalate crystals obtained show a startling good quality that increases their already great stability over a wide chemical and physical conditions' range.

CO2 capture and sequestration in stable Ca-oxalate, via Ca-ascorbate promoted green reaction / L. Pastero, N. Curetti, M.A. Ortenzi, M. Schiavoni, E. Destefanis, A. Pavese. - In: SCIENCE OF THE TOTAL ENVIRONMENT. - ISSN 0048-9697. - 666(2019), pp. 1232-1244. [10.1016/j.scitotenv.2019.02.114]

CO2 capture and sequestration in stable Ca-oxalate, via Ca-ascorbate promoted green reaction

M.A. Ortenzi;M. Schiavoni;A. Pavese
Ultimo
2019

Abstract

The increase in the amount of carbon dioxide (CO 2 ) emissions related to many anthropic activities is a persistent and growing problem. During the last years, many solutions have been set out, none of them being the ultimate one. Investigators agree on the need of a synergic approach to the problem, in terms of many complementary methods of sequestration that, combined with the reduction of production, will be able to decrease the concentration of the CO 2 in the atmosphere. In this work, we explore the use of a green reaction to trap the CO 2 into a stable crystalline phase (weddellite) resorting to a multidisciplinary approach. CO 2 is reduced and precipitated as calcium oxalate through vitamin C as a sacrificial reductant. Calcium oxalate crystals obtained show a startling good quality that increases their already great stability over a wide chemical and physical conditions' range.
Ascorbic acid; Calcium ascorbate; Calcium oxalate; Carbon dioxide; Sequestration; Weddellite
Settore CHIM/04 - Chimica Industriale
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/894381
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