Enhanced mechanical properties of living and regenerative building materials by filamentous Leptolyngbya boryana

IF 7.9 2区 综合性期刊 Q1 CHEMISTRY, MULTIDISCIPLINARY Cell Reports Physical Science Pub Date : 2024-07-09 DOI:10.1016/j.xcrp.2024.102098
Yongjun Son, Jihyeon Min, Indong Jang, Jiyoon Park, Chongku Yi, Woojun Park
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Abstract

Cement-free and cyanobacteria-based living building materials (LBMs) can be manufactured using microbially induced calcium carbonate (CaCO3) precipitation (MICP) technology, which is regarded as eco-friendly because of the absence of CO2 gas emissions during the manufacturing process. Here, we report that photosynthetic and filamentous cyanobacterium Leptolyngbya boryana GGD can precipitate substantial amounts of CaCO3 with biofilm formation in our optimized medium. Compared to coccoid cells, filamentous cells have an extensive surface area that can efficiently agglomerate the formation of granular materials and fill the void spaces by forming bridging microstructures along with precipitated CaCO3 in LBMs, which can enhance the mechanical properties of LBMs. Regenerative LBMs can possibly be reconstructed using old materials from parent LBMs without the addition of GGD strain cells. The physicochemical properties of the filamentous GGD strain hold promise as valuable components for maintaining the structural integrity of LBMs.

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丝状 Leptolyngbya boryana 增强活体和再生建筑材料的机械性能
利用微生物诱导碳酸钙(CaCO3)沉淀(MICP)技术可以制造无水泥和基于蓝藻的活体建筑材料(LBM),该技术在制造过程中不排放二氧化碳气体,因此被视为生态友好型技术。在此,我们报告了光合丝状蓝藻 Leptolyngbya boryana GGD 能在我们优化的培养基中沉淀大量 CaCO3 并形成生物膜。与茧状细胞相比,丝状细胞具有广阔的表面积,可以有效地聚集形成颗粒状物质,并通过在 LBM 中形成桥接微结构与沉淀的 CaCO3 一起填充空隙,从而提高 LBM 的机械性能。再生 LBM 可使用母体 LBM 的旧材料进行重建,而无需添加 GGD 菌株细胞。丝状 GGD 菌株的理化特性有望成为维持 LBM 结构完整性的重要成分。
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来源期刊
Cell Reports Physical Science
Cell Reports Physical Science Energy-Energy (all)
CiteScore
11.40
自引率
2.20%
发文量
388
审稿时长
62 days
期刊介绍: Cell Reports Physical Science, a premium open-access journal from Cell Press, features high-quality, cutting-edge research spanning the physical sciences. It serves as an open forum fostering collaboration among physical scientists while championing open science principles. Published works must signify significant advancements in fundamental insight or technological applications within fields such as chemistry, physics, materials science, energy science, engineering, and related interdisciplinary studies. In addition to longer articles, the journal considers impactful short-form reports and short reviews covering recent literature in emerging fields. Continually adapting to the evolving open science landscape, the journal reviews its policies to align with community consensus and best practices.
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