Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures

Abstract Among the CaCO3 polymorphs, aragonite demonstrates a better performance as a filler material in the paper and plastic industries. Despite being ideal from the environmental protection perspective, the production of aragonite particles via CO2 mineralization of rocks is hindered by the diffi...

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Autores principales:	Jiajie Wang, Noriaki Watanabe, Kosuke Inomoto, Masanobu Kamitakahara, Kengo Nakamura, Takeshi Komai, Noriyoshi Tsuchiya
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5078f06155dd4c598bb4c52bcb20925f
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spelling	oai:doaj.org-article:5078f06155dd4c598bb4c52bcb20925f2021-12-02T15:22:56ZEnhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures10.1038/s41598-021-93550-92045-2322https://doaj.org/article/5078f06155dd4c598bb4c52bcb20925f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93550-9https://doaj.org/toc/2045-2322Abstract Among the CaCO3 polymorphs, aragonite demonstrates a better performance as a filler material in the paper and plastic industries. Despite being ideal from the environmental protection perspective, the production of aragonite particles via CO2 mineralization of rocks is hindered by the difficulty in achieving high production efficiencies and purities, which, however, can be mitigated by exploiting the potential ability of chelating agents on metal ions extraction and carbonation controlling. Herein, chelating agent N,N-dicarboxymethyl glutamic acid (GLDA) was used to enhance the extraction of Ca from calcium silicate and facilitate the production of aragonite particles during the subsequent Ca carbonation. CO2 mineralization was promoted in the presence of 0.01–0.1 M GLDA at ≤ 80 °C, with the maximal CaCO3 production efficiency reached 308 g/kg of calcium silicate in 60 min using 0.03 M GLDA, which is 15.5 times higher than that without GLDA. In addition, GLDA showed excellent effects on promoting aragonite precipitation, e.g., the content of aragonite was only 5.1% in the absence of GLDA at 50 °C, whereas highly pure (> 90%, increased by a factor of 18) and morphologically uniform aragonite was obtained using ≥ 0.05 M GLDA under identical conditions. Aragonite particle morphologies could also be controlled by varying the GLDA concentration and carbonation temperature. This study proposed a carbon-negative aragonite production method, demonstrated the possibility of enhanced and controlled aragonite particle production during the CO2 mineralization of calcium silicates in the presence of chelating agents.Jiajie WangNoriaki WatanabeKosuke InomotoMasanobu KamitakaharaKengo NakamuraTakeshi KomaiNoriyoshi TsuchiyaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiajie Wang Noriaki Watanabe Kosuke Inomoto Masanobu Kamitakahara Kengo Nakamura Takeshi Komai Noriyoshi Tsuchiya Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
description	Abstract Among the CaCO3 polymorphs, aragonite demonstrates a better performance as a filler material in the paper and plastic industries. Despite being ideal from the environmental protection perspective, the production of aragonite particles via CO2 mineralization of rocks is hindered by the difficulty in achieving high production efficiencies and purities, which, however, can be mitigated by exploiting the potential ability of chelating agents on metal ions extraction and carbonation controlling. Herein, chelating agent N,N-dicarboxymethyl glutamic acid (GLDA) was used to enhance the extraction of Ca from calcium silicate and facilitate the production of aragonite particles during the subsequent Ca carbonation. CO2 mineralization was promoted in the presence of 0.01–0.1 M GLDA at ≤ 80 °C, with the maximal CaCO3 production efficiency reached 308 g/kg of calcium silicate in 60 min using 0.03 M GLDA, which is 15.5 times higher than that without GLDA. In addition, GLDA showed excellent effects on promoting aragonite precipitation, e.g., the content of aragonite was only 5.1% in the absence of GLDA at 50 °C, whereas highly pure (> 90%, increased by a factor of 18) and morphologically uniform aragonite was obtained using ≥ 0.05 M GLDA under identical conditions. Aragonite particle morphologies could also be controlled by varying the GLDA concentration and carbonation temperature. This study proposed a carbon-negative aragonite production method, demonstrated the possibility of enhanced and controlled aragonite particle production during the CO2 mineralization of calcium silicates in the presence of chelating agents.
format	article
author	Jiajie Wang Noriaki Watanabe Kosuke Inomoto Masanobu Kamitakahara Kengo Nakamura Takeshi Komai Noriyoshi Tsuchiya
author_facet	Jiajie Wang Noriaki Watanabe Kosuke Inomoto Masanobu Kamitakahara Kengo Nakamura Takeshi Komai Noriyoshi Tsuchiya
author_sort	Jiajie Wang
title	Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
title_short	Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
title_full	Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
title_fullStr	Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
title_full_unstemmed	Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures
title_sort	enhancement of aragonite mineralization with a chelating agent for co2 storage and utilization at low to moderate temperatures
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5078f06155dd4c598bb4c52bcb20925f
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Enhancement of aragonite mineralization with a chelating agent for CO2 storage and utilization at low to moderate temperatures

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