Mineral carbonation technologies are associated with the concept of Carbon (dioxide) capture, utilization, and storage and rely on the mineralization reaction, which can be observed in nature. In order to overcome the slow natural reaction rates, diverse pathways are studied to sequester carbon dioxide into mineral products. However, studies that perform a life cycle assessment (LCA) on mineral carbonation are poorly comparable due to differences in the assessment methodology. A two-step approach is applied to report on and overcome this issue. First, a qualitative analysis based on a systematic literature review of 29 relevant articles was conducted. Second, a meta analysis with harmonized methodological assumptions was applied to assess which of the proposed ex-situ carbonation routes in literature has the lowest environmental impacts (16 different impact categories assessed). The qualitative literature review demonstrates that the most critical difference of the published LCAs on mineral carbonation technologies is handling multifunctional processes, as this parameter influences the result of an LCA. Since none of the assessed studies evaluated the technology readiness level (TRL) of the investigated technology, a TRL estimation based on the studies' descriptive information, ranging from 2 to 6, was provided. This is reflected in the predominant usage of laboratory or simulated data as the primary data source. The main finding of the meta analysis in terms of global warming and the impact category minerals and metals is that direct aqueous carbonation, carbonation mixing, and carbonation curing show negative values in those impact categories despite the deployed scenario. Hence, these three mineral carbonation technologies seem to be most promising. However, it could be demonstrated that other impact categories show positive results. In the case of indirect aqueous carbonation, it depends on the substitution credit assumed whether this pathway acts as a climate mitigation pathway.

矿物碳化技术与碳（二氧化碳）捕获、利用和储存的概念相关，并依赖于在自然界中可以观察到的矿化反应。为了克服缓慢的自然反应速率，研究了多种途径将二氧化碳隔离到矿物产品中。然而，由于评估方法的差异，对矿物碳化进行生命周期评估 (LCA) 的研究缺乏可比性。应用两步法来报告和解决这个问题。首先，基于对 29 篇相关文章的系统文献回顾进行了定性分析。第二，使用具有统一方法假设的元分析来评估文献中提议的异地碳化路线中的哪一条具有最低的环境影响（评估了 16 种不同的影响类别）。定性文献综述表明，已发表的关于矿物碳化技术的 LCA 的最关键区别是处理多功能过程，因为该参数会影响 LCA 的结果。由于评估的研究均未评估所研究技术的技术准备水平 (TRL)，因此提供了基于研究描述性信息（范围为 2 到 6）的 TRL 估计值。这反映在实验室或模拟数据作为主要数据源的主要用途上。就全球变暖和影响类别矿物和金属而言，元分析的主要发现是，尽管采用了部署方案，但直接水性碳化、碳化混合和碳化固化在这些影响类别中显示出负值。因此，这三种矿物碳酸化技术似乎是最有前途的。但是，可以证明其他影响类别显示出积极的结果。在间接水性碳酸化的情况下，这取决于假设该途径是否充当气候缓解途径的替代信用。可以证明其他影响类别显示出积极的结果。在间接水性碳酸化的情况下，这取决于假设该途径是否充当气候缓解途径的替代信用。可以证明其他影响类别显示出积极的结果。在间接水性碳酸化的情况下，这取决于假设该途径是否充当气候缓解途径的替代信用。