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Study of the Effect of Leucine on Calcium Carbonate Precipitation in a Circular Economy Perspective

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Faculty of Bioscience, Agri-Food and Environmental Technologies, University of Teramo, 64100 Teramo, Italy
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Department of Industrial and Information Engineering and of Economics, University of L’Aquila, 67100 L’Aquila, Italy
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Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy
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Department of Chemical, Materials and Production Engineering, University Federico II of Naples, 80125 Napoli, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Sergi Garcia-Segura
Water 2022, 14(2), 270; https://doi.org/10.3390/w14020270
Received: 3 December 2021 / Revised: 2 January 2022 / Accepted: 13 January 2022 / Published: 17 January 2022
(This article belongs to the Section Wastewater Treatment and Reuse)
This paper studies the crystallization of calcium carbonate in the presence of leucine—a green additive. The effect of leucine on calcium carbonate precipitation kinetic is particularly interesting since CaCO3 is a valuable product worthy to be recovered from industrial liquid wastes (e.g., desalination brines) in the circular economy approach. Experiments have been performed in a laboratory scale plant with a supersaturation range which spams from 2 to 120 and two different leucine concentration (0.520 × 10−3 and 1.041 × 10−3 mol/L). Results obtained have been compared with previous published ones, carried out without any additives. From the measurements of induction times for calcium carbonate nucleation, it was established that in solution, the leucine favors the precipitation of calcium carbonate, so it can be considered a promoter in calcium carbonate crystallization and this behavior enhances when raising its concentration in solution. Interfacial tension was determined for both leucine concentration levels, and the values obtained are in the range 51–84 mJ/m2. View Full-Text
Keywords: calcium carbonate; green additive; leucine; desalination brines; CCU; precipitation calcium carbonate; green additive; leucine; desalination brines; CCU; precipitation
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MDPI and ACS Style

Mazziotti di Celso, G.; Prisciandaro, M.; Karatza, D.; Musmarra, D.; Lancia, A. Study of the Effect of Leucine on Calcium Carbonate Precipitation in a Circular Economy Perspective. Water 2022, 14, 270. https://doi.org/10.3390/w14020270

AMA Style

Mazziotti di Celso G, Prisciandaro M, Karatza D, Musmarra D, Lancia A. Study of the Effect of Leucine on Calcium Carbonate Precipitation in a Circular Economy Perspective. Water. 2022; 14(2):270. https://doi.org/10.3390/w14020270

Chicago/Turabian Style

Mazziotti di Celso, Giuseppe, Marina Prisciandaro, Despina Karatza, Dino Musmarra, and Amedeo Lancia. 2022. "Study of the Effect of Leucine on Calcium Carbonate Precipitation in a Circular Economy Perspective" Water 14, no. 2: 270. https://doi.org/10.3390/w14020270

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