Magnesium carbonate granule formation from carbonate precursors in a fluidized-bed crystallization system

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-07-23 DOI:10.1016/j.jwpe.2025.108373

Jing-Wei Huang , Thi-Hanh Ha , Ralf Ruffel M. Abarca , Ming-Chun Lu

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引用次数: 0

Abstract

The growing use of fossil fuels and industrial activities has led to a surge in CO₂ emissions, significantly impacting climate change. Carbon capture and utilization technologies provide a promising solution to reduce atmospheric CO₂ and convert it into valuable products. This study focuses on the synthesis and recovery of magnesium carbonate particles via the reaction of CO₂ with liquid magnesium sources under controlled conditions. The impact of pH, surface loading, [Mg]₀/[CO₃]₀ molar ratio, and interference ions such as calcium on the process of magnesium carbonate synthesis granulation through fluidized-bed homogeneous crystallization (FBHC) has been extensively investigated. Under optimal conditions (pH 10.0, [Mg]₀/[CO₃]₀ molar ratio of 1, and cross-sectional loading of 55.0 kg m⁻² h⁻¹), the crystallization ratio (CR) and total removal (TR) of both carbonate and magnesium exceeded 50 %. This work highlights the potential for converting industrially available CO₂ into functional magnesium carbonate granules, promoting the resource utilization of both CO₂ and magnesium.

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碳酸盐前体在流化床结晶系统中形成碳酸镁颗粒

化石燃料的使用和工业活动的增加导致二氧化碳排放量激增，对气候变化产生了重大影响。碳捕获和利用技术为减少大气中的二氧化碳并将其转化为有价值的产品提供了一个有前途的解决方案。本文研究了在可控条件下，通过CO₂与液态镁源反应合成和回收碳酸镁颗粒。研究了pH、表面载荷、[Mg] 0 /[CO₃]0摩尔比以及钙等干扰离子对流化床均匀结晶法合成碳酸镁造粒过程的影响。在最佳条件下（pH 10.0， [Mg]₀/[CO₃]₀摩尔比为1，截面载荷为55.0 kg m−2 h−1），碳酸盐和镁的结晶率（CR）和总去除率（TR）均超过50%。这项工作强调了将工业上可用的CO 2转化为功能性碳酸镁颗粒的潜力，促进了CO 2和镁的资源利用。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies