干旱区生态环境知识资源中心(Arid): The efficiency of ureolytic bacteria isolated from historical adobe structures in the production of bio-bricks

Arid

DOI	10.1016/j.conbuildmat.2021.125868
	The efficiency of ureolytic bacteria isolated from historical adobe structures in the production of bio-bricks
	Farajnia, Aysan; Shafaat, Ali; Farajnia, Safar; Sartipipour, Mohsen; Tirkolaei, Hamed Khodadadi
通讯作者	Shafaat, A (corresponding author)，Shahid Beheshti Univ, Fac Architecture & Urban Planning, Dept Construct, Tehran, Iran.
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2022
卷号	317
英文摘要	Building and construction sector contributes to climate change due to the massive amounts of global energy use and greenhouse gas emissions; therefore, developing sustainable alternatives for manufacturing construction materials is of high priority. The cementation of sand into the sandstone through microbially induced carbonate precipitation is an environmentally friendly technology with multiple prospective applications, mainly in con-struction and geotechnical engineering. This study introduces ureolytic bacterial strains with high urease activity found in Iran's historical adobe structures and deserts, which were evaluated for the production of biologically cemented bricks as an alternative to conventional brick manufacturing methods. In the present study, 25 soil samples were collected from historical adobe structures and deserts in the central provinces of Iran. Samples were screened for urease-producing bacteria to find native bacteria and assess the possibilities of producing biologically cemented bricks. The urease activity and calcium carbonate precipitation mass of the ureolytic bacteria were determined. Among all the collected isolates, the most efficient carbonate-producing bacteria was compared with Sporocarsina pasteurii and Sporocarsina ureae control strains in point of the growth rate, urease activity, and calcite precipitation amounts. The isolate with highest urease activity was identified as Bacillus sp. and nominated as strain AF1 by 16S rRNA gene sequencing. The selected bacteria was further used to construct bio-bricks from silica sand through the immersion method. The produced bio-bricks showed an average compressive strength and water absorption percentage of 3000 kPa and 8.5%, respec-tively. The bio-treated bricks also showed satisfying durability when subjected to wet-dry cycles and their flexural stress-strain curve reached the peak of 1300 kPa. X-ray diffraction and Scanning electron microscopy confirmed the presence of calcite crystals, bonding the soil particles. In conclusion, the current study results show that future sustainable buildings can benefit from bacterial species with high urease activity similar to historical sustainable buildings in central provinces of Iran.
英文关键词	Bio-brick Calcite precipitation Biocementation MICP Sustainable Urease activity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000753471500001
WOS关键词	CARBONATE PRECIPITATION ; SOIL ; BIOCEMENTATION ; PASTEURII ; SAND
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376925
作者单位	[Farajnia, Aysan; Shafaat, Ali; Sartipipour, Mohsen] Shahid Beheshti Univ, Fac Architecture & Urban Planning, Dept Construct, Tehran, Iran; [Farajnia, Safar] Tabriz Univ Med Sci, Biotechnol Res Ctr, Tabriz, Iran; [Tirkolaei, Hamed Khodadadi] Arizona State Univ, Ctr Biomediated & Bioinspired Geotech, Tempe, AZ USA
推荐引用方式 GB/T 7714	Farajnia, Aysan,Shafaat, Ali,Farajnia, Safar,et al. The efficiency of ureolytic bacteria isolated from historical adobe structures in the production of bio-bricks[J],2022,317.
APA	Farajnia, Aysan,Shafaat, Ali,Farajnia, Safar,Sartipipour, Mohsen,&Tirkolaei, Hamed Khodadadi.(2022).The efficiency of ureolytic bacteria isolated from historical adobe structures in the production of bio-bricks.CONSTRUCTION AND BUILDING MATERIALS,317.
MLA	Farajnia, Aysan,et al."The efficiency of ureolytic bacteria isolated from historical adobe structures in the production of bio-bricks".CONSTRUCTION AND BUILDING MATERIALS 317(2022).