Juhee Son, Jo Hong Kang, Kwanghwi Kim, Hojun Song, Hyun Sic Park
{"title":"Experimental study on indirect mineral carbonation using five types of slag for production of high-purity calcium carbonate","authors":"Juhee Son, Jo Hong Kang, Kwanghwi Kim, Hojun Song, Hyun Sic Park","doi":"10.1007/s10163-024-01980-0","DOIUrl":null,"url":null,"abstract":"<div><p>Mineral carbonation is one of the known methods for carbon capture, utilization, and storage (CCUS). Slag from the steel industry is studied as a common source of CaCO<sub>3</sub> via mineral carbonation owing to its high Ca content. Despite numerous preliminary studies, the optimal factors governing the mineral carbonation of steelmaking slag, such as extraction and carbonation remain unexplored. In this study, we optimized the factors for Ca extraction and carbonation, as CaCO<sub>3</sub> produced under these optimized factors possesses commercial value due to its high purity. The extraction and carbonation experiments were performed on two types of slag samples, specifically non-magnetic steelmaking and pig iron slag, utilizing the chosen factors for each procedure. NH<sub>4</sub>Cl was chosen as the extractant because of its high calcium selectivity and inhibition of gel formation. Precipitates with Ca content ≥ 98% were obtained by extracting and carbonating them. The crystalline form and particle size of CaCO<sub>3</sub> in the precipitates were determined by the pH control. The findings of this study will be used to improve the design of precipitated calcium carbonate (PCC) production processes and increase the economic value of their output.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Material Cycles and Waste Management","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s10163-024-01980-0","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Mineral carbonation is one of the known methods for carbon capture, utilization, and storage (CCUS). Slag from the steel industry is studied as a common source of CaCO3 via mineral carbonation owing to its high Ca content. Despite numerous preliminary studies, the optimal factors governing the mineral carbonation of steelmaking slag, such as extraction and carbonation remain unexplored. In this study, we optimized the factors for Ca extraction and carbonation, as CaCO3 produced under these optimized factors possesses commercial value due to its high purity. The extraction and carbonation experiments were performed on two types of slag samples, specifically non-magnetic steelmaking and pig iron slag, utilizing the chosen factors for each procedure. NH4Cl was chosen as the extractant because of its high calcium selectivity and inhibition of gel formation. Precipitates with Ca content ≥ 98% were obtained by extracting and carbonating them. The crystalline form and particle size of CaCO3 in the precipitates were determined by the pH control. The findings of this study will be used to improve the design of precipitated calcium carbonate (PCC) production processes and increase the economic value of their output.
期刊介绍:
The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles.
The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management.
The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).