微生物诱导碳酸盐沉衍生生物混凝土形成:碳封存和环保建筑的可持续解决方案
Ashiq Hussain1, Danish Ali1, Suprokash Koner2
1Department of Earth and Environmental Sciences, National Chung Cheng University, Chiayi County, Taiwan; Doctoral Program in Science, Technology, Environment, and Mathematics, National Chung Cheng University, Chiayi County, Taiwan.
Environmental research
|February 1, 2025
概括
微生物诱导的碳酸沉 (MICP) 为创造生物混凝土提供了一种可持续的方法. 这种方法提高了材料的强度和耐用性,同时隔离了二氧化碳 (CO2),减少了对环境的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 建筑材料的生产是能源密集的,释放大量的二氧化碳.
- 微生物诱导的碳酸沉 (MICP) 为材料开发提供了一个可持续的替代方案.
- MICP利用微生物合成碳酸 (CaCO3),为环境带来好处.
研究的目的:
- 通过MICP审查微生物在碳封存和CaCO3合成中的作用.
- 使用MICP探索生物混凝土形成的应用.
- 分析影响生物混凝土开发MICP的因素.
主要方法:
- 关于MICP和生物混凝土的SCOPUS数据库 (2010-2024) 的文献综述.
- 分析微生物在二氧化碳利用和CaCO3沉中的作用.
- 检查影响MICP的因素,包括细菌菌株,凝固溶液,温度,注射和pH.
主要成果:
- 特定的细菌 (例如,Bacillus物种) 在性条件下有效诱导CaCO3沉.
- 生物混凝土通过碳化表现出二氧化碳封存能力,受尿酶活性和碳酸无水酶 (CA) 的影响.
- MICP参数显著影响生物混凝土的形成和特性.
结论:
- MICP是开发具有增强强度和耐久性的环保生物混凝土的一个有前途的技术.
- 生物混凝土有助于二氧化碳的捕获,减轻建筑对环境的影响.
- 对MICP优化的进一步研究可以导致建筑行业的二氧化碳排放量大幅减少.
更多相关视频
相关概念视频
Carbonation Shrinkage
99
Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
99
Design Example: Sustainability in Concrete Building
154
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
154
Acid Attack on Concrete
181
When acids come into contact with concrete, they initiate a chemical reaction that dissolves the hydrated cement paste. This process leads to softening and structural weakening of the concrete. This issue is commonly observed in environments such as chimneys, sewers, and industrial settings. The severity of the damage increases as the pH of the water interacting with the concrete drops below 6.5. In particular, a pH under 4.5 can cause significant concrete damage.
The rate at which hydrogen...
The rate at which hydrogen...
181
Waterproofing and Anti-Bacterial Admixtures in Concrete
71
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
71
Effect of Sea Water on Concrete
161
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
161
Concrete
308
Concrete is a vital construction material extensively used worldwide, primarily valued for its strength, durability, and versatility, which it provides for various structural designs. Concrete generally comprises ingredients like Portland cement, coarse gravel, fine sand, and water. Concrete can be mixed by simple hand methods or industrially at computer-controlled plants. The mixture consists of aggregates and a paste made from water and Portland cement. This paste coats the aggregates and,...
308


