在回收混凝土聚合物中利用牛的二氧化碳酶II进行酶诱导的碳酸盐沉 (EICP)
Ali Tahreer Abdulmajeed Abdulmajeed1, Hatice Gokoglan1, Emine Ozdogru2
1Suleyman Demirel University, Institute of Science, Department of Chemistry, Cunur, Isparta, 32200, Turkiye.
Environmental research
|June 30, 2025
概括
这项研究引入了一种新型的酶诱导沉方法,用于碳酸 (CaCO3),使用纯化牛炭酸二甲酶II (bCAII). 这种生物催化方法增强了回收混凝土聚合物的碳化,为建筑和碳封存提供了可持续的解决方案.
科学领域:
- 生物化学和材料科学 材料科学
- 酶学 是一种酶学.
- 生物矿物化和碳捕获
背景情况:
- 对碳酸 (CaCO3) 的控制降水对于各种工业应用至关重要.
- 生物催化方法为传统化学过程提供了环保的替代方案.
- 像碳酸无水酶这样的酶可以加速CaCO3的形成.
研究的目的:
- 提出一种新的酶诱导沉方法,用于CaCO3使用纯化牛炭酸无水酶II (bCAII).
- 为了研究pH值,温度和CaCl2度对bCAII诱导的CaCO3沉的影响.
- 评估bCAII在促进回收混凝土聚合物的碳化 (RCA) 的有效性.
主要方法:
- 从牛的红细胞中净化牛的碳酸无水酶II (bCAII).
- 使用X射线衍射 (XRD),热重力测量 (TG) 分析和里埃变换红外光谱学 (FTIR) 对CaCO3沉物的表征.
- 在二氧化碳室中暴露未经处理和bCAII处理的回收混凝土聚合物 (RCA) 的碳化.
主要成果:
- 对于bCAII诱导的CaCO3沉的最佳条件被确定为pH 8.0和22°C.
- 沉物主要由石组成,少量含有瓦特里特和阿拉戈尼特.
- 在碳化过程中,bCAII治疗显著增强了RCA上的CaCO3形成.
结论:
- 纯化的bCAII为控制的CaCO3矿化提供了有效的生物催化途径.
- bCAII有效地促进了RCA的碳化,提高了其在混凝土中重复使用的潜力.
- 这种酶方法为碳捕获和循环建设提供了一种可持续的方法.
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