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DOI	10.1016/j.seppur.2024.126615
	Mechanism of ultrasonic enhanced acetic acid efficiently leaching of steel slag and synthesis of calcium carbonate whiskers
	Liu, Lincheng; Gan, Min; Fan, Xiaohui; Gao, Zitan; Sun, Zengqing; Ji, Zhiyun; Wei, Jiaoyang; Ma, Shihui
发表日期	2024
ISSN	1383-5866
EISSN	1873-3794
起始页码	339
卷号	339
英文摘要	Addressing the dual challenges of environmental pollution and sustainable energy systems, this study investigates a novel CO2 sequestration technique via steel slag, a steel production byproduct. It introduces an ultrasonic enhanced leaching process using CH3COOH to extract calcium and magnesium from steel slag, facilitating the synthesis of CaCO3 whiskers. The results demonstrate that augmenting the ultrasonic power, increasing solid-liquid consistency, raising the initial reaction temperature, and utilizing a lower concentration of CH3COOH substantially improve the selective leaching rate of Ca + Mg. Kinetic analysis under ultrasonic conditions reveals a low activation energy of 11.45 kJ center dot mol(-1), indicating surface-controlled reaction kinetics in ultrasonic leaching process. Eventually, high-purity CaCO3 whiskers were synthesized under meticulously controlled conditions: employing 400 W of ultrasonic power, sustaining a reaction temperature of 70 degrees C, executing the procedure for 15 min with an initial solution pH of 9.2. This innovative approach not only contributes to reducing CO2 emissions but also promotes the reuse of steel slag, addressing environmental concerns and supporting sustainable energy systems. And it underscores the potential of integrating sustainable practices in the steel industry, aligning with global efforts in climate change mitigation and pollution reduction.
英文关键词	Ultrasonic chemistry; Steel slag; CO2 fixation; Selective leaching; CaCO3 whiskers
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:001179443500001
来源期刊	SEPARATION AND PURIFICATION TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296132
作者单位	Central South University; Central South University
推荐引用方式 GB/T 7714	Liu, Lincheng,Gan, Min,Fan, Xiaohui,et al. Mechanism of ultrasonic enhanced acetic acid efficiently leaching of steel slag and synthesis of calcium carbonate whiskers[J],2024,339.
APA	Liu, Lincheng.,Gan, Min.,Fan, Xiaohui.,Gao, Zitan.,Sun, Zengqing.,...&Ma, Shihui.(2024).Mechanism of ultrasonic enhanced acetic acid efficiently leaching of steel slag and synthesis of calcium carbonate whiskers.SEPARATION AND PURIFICATION TECHNOLOGY,339.
MLA	Liu, Lincheng,et al."Mechanism of ultrasonic enhanced acetic acid efficiently leaching of steel slag and synthesis of calcium carbonate whiskers".SEPARATION AND PURIFICATION TECHNOLOGY 339(2024).