Converting CO2 from biogas and MgCl2 residues into valuable magnesium carbonate: A novel strategy for renewable energy production
Converting CO2 from biogas and MgCl2 residues into valuable magnesium carbonate: A novel strategy for renewable energy production
复制标题
DOI：
10.1016/j.energy.2019.05.106
复制
发表时间：
2019-08-01
期刊：
影响因子：
9
通讯作者：
Navarrete, Benito
中科院分区：
文献类型：
--
作者：
Baena-Moreno, Francisco M.;Rodriguez-Galan, Monica;Navarrete, Benito
在这项工作中，一个新的战略，生物甲烷生产和氯化镁废物的价值得到解决。所提出的工艺是现有沼气升级技术的潜在替代途径，通过二氧化碳矿化成有价值的碳酸镁。影响沉淀效率的主要参数（反应时间，反应温度，反应物/沉淀剂的摩尔比）进行了研究，导致有前途的结果，火花在这一创新路线的进一步调查。此外，通过不同的物理化学表征技术，如拉曼、X射线衍射和扫描电子显微镜，准确地分析了所获得的固体产物的纯度和形貌。表征研究揭示了在所述方法中获得的钠镁矾和钙磷钙石碳酸盐相的混合物，后者是所得沉淀物中的主要相。总体而言，本文讨论的结果证实了这种协同二氧化碳矿化和可再生能源生产的创新战略的技术可行性。皇冠版权所有（C）2019由爱思唯尔有限公司发布。保留所有权利。
In this work a novel strategy for bio-methane production and magnesium chloride waste valorization is addressed. The proposed process is a potential alternative path to the already existing biogas upgrading technologies by carbon dioxide mineralization into valuable magnesium carbonate. The main parameters affecting the precipitation efficiency (reaction time, reaction temperature, and molar ratio reactant/precipitator) are studied, leading to promising results which spark further investigation in this innovative route. Additionally the purity and the morphology of the obtained solid product was accurately analysed through different physicochemical characterization techniques such as Raman, X-Ray diffraction and Scanning electron microscope. The characterisation study reveals a mixture of Nesqueonite and Dypingite carbonate phases obtained in the process being the later the dominant phase in the resulting precipitate. Overall, the results discussed herein confirmed the technical feasibility of this innovative strategy for synergizing carbon dioxide mineralization and renewable energy production. Crown Copyright (C) 2019 Published by Elsevier Ltd. All rights reserved.