酶辅助的二氧化碳捕获和矿化在建筑相关的性材料
Nabeel Liaqat1, Xiong Bill Yu2
1Department of Civil and Environmental Engineering, Case Western Reserve University, 2104 Adelbert Road, Cleveland, OH, 44106-720, USA.
Scientific reports
|January 9, 2026
概括
碳酸无水酶显著增加了建筑材料如石灰和水泥中的二氧化碳 (CO2) 捕获. 这种酶增强了二氧化碳的吸收和保留,为减少工业排放提供了一种有希望的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 在性建筑材料中矿化二氧化碳 (CO2) 是减轻工艺排放的关键策略.
- 了解二氧化碳吸收和保留在水合石灰,波特兰水泥,飞灰和渣等材料中的动力学和效率至关重要.
研究的目的:
- 调查碳酸无水酶对性建筑材料中二氧化碳吸收和保留的影响.
- 量化该酶对二氧化碳矿化效率和持久性的增强.
- 阐明这些材料中酶辅助的CO2矿化机制.
主要方法:
- 使用质量流控制的二氧化碳供应和重力测量跟踪来测量二氧化碳的吸收和保留.
- 在环境条件下测试碳酸无水素对水合石灰,波特兰水泥,飞灰和渣的影响.
- 在特定时间内进行二氧化碳供应 (1440分钟用于石灰/水泥,360分钟用于飞灰/泥),然后进行保留测量阶段.
- 在四个循环中评估了酶的可重复使用性.
主要成果:
- 在所有测试材料中,碳酸 anhydrase 增加了 71% 到 89% 的总 CO2 吸收.
- 具体的吸收能力:水合石灰 (474.1毫克g-1),水泥 (285.9毫克g-1),飞灰 (308.3毫克g-1),和渣 (312.4毫克g-1).
- 酶处理显著改善了保留的二氧化碳的持久性,在几个情况下几乎完全保留了二氧化碳.
- 在四个重复使用周期后,酶保留了87.9%的初始性能.
结论:
- 碳酸无水酶可显著加快建筑材料中二氧化碳矿化速率,而不会改变反应终点.
- 一个涉及加速CO2水合和增加碳酸盐可用性的表面合机制驱动了增强的矿化.
- 这些发现为选择材料-酶组合和优化建筑应用中酶辅助CO2矿化条件提供了基础.
关键词:
生物催化剂是一种生物催化剂.二氧化碳矿物化的过程.碳封存是一种碳封存方式.碳酸无水酶是一种碳酸无水酶.气候变化 气候变化 气候变化酶的重复使用.可持续的工程是可持续的工程.废弃物价值化 废弃物价值化 废弃物价值化更多相关视频
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