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Zhang J, Deng J, He Y, Wu J, Simões MF, Liu B, Li Y, Zhang S, Antunes A. A review of biomineralization in healing concrete: Mechanism, biodiversity, and application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170445. [PMID: 38296086 DOI: 10.1016/j.scitotenv.2024.170445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/06/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
Concrete is the main ingredient in construction, but it inevitably fractures during its service life, requiring a large amount of cement and aggregate for maintenance. Concrete healing through biomineralization can repair cracks and improve the durability of concrete, which is conducive to saving raw materials and reducing carbon emissions. This paper reviews the biodiversity of microorganisms capable of precipitating mineralization to repair the concrete and their mineralization ability under different conditions. To better understand the mass transfer process of precipitates, two biomineralization mechanisms, microbially-controlled mineralization and microbially-induced mineralization, have been briefly described. The application of microorganisms in the field of healing concrete, comprising passive healing and intrinsic healing, is discussed. The key insight on the interaction between cementitious materials and microorganisms is the main approach for developing novel self-healing concrete in the future to improve the corrosion resistance of concrete. At the same time, the limitations and challenges are also pointed out.
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Affiliation(s)
- Junjie Zhang
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau SAR, China; Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China; Shunde Innovation School, University of Science and Technology Beijing, Foshan, China
| | - Jixin Deng
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China
| | - Yang He
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau SAR, China
| | - Jiahui Wu
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau SAR, China
| | - Marta Filipa Simões
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau SAR, China; China National Space Administration, Macau Center for Space Exploration and Science, Macau SAR, China
| | - Bo Liu
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China
| | - Yunjian Li
- Faculty of Innovation Engineering, Macau University of Science and Technology, Macau SAR, China
| | - Shengen Zhang
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China.
| | - André Antunes
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau SAR, China; China National Space Administration, Macau Center for Space Exploration and Science, Macau SAR, China; China-Portugal Belt and Road Joint Laboratory on Space & Sea Technology Advanced Research, China.
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Daunoras J, Kačergius A, Gudiukaitė R. Role of Soil Microbiota Enzymes in Soil Health and Activity Changes Depending on Climate Change and the Type of Soil Ecosystem. BIOLOGY 2024; 13:85. [PMID: 38392304 PMCID: PMC10886310 DOI: 10.3390/biology13020085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/25/2024] [Accepted: 01/27/2024] [Indexed: 02/24/2024]
Abstract
The extracellular enzymes secreted by soil microorganisms play a pivotal role in the decomposition of organic matter and the global cycles of carbon (C), phosphorus (P), and nitrogen (N), also serving as indicators of soil health and fertility. Current research is extensively analyzing these microbial populations and enzyme activities in diverse soil ecosystems and climatic regions, such as forests, grasslands, tropics, arctic regions and deserts. Climate change, global warming, and intensive agriculture are altering soil enzyme activities. Yet, few reviews have thoroughly explored the key enzymes required for soil fertility and the effects of abiotic factors on their functionality. A comprehensive review is thus essential to better understand the role of soil microbial enzymes in C, P, and N cycles, and their response to climate changes, soil ecosystems, organic farming, and fertilization. Studies indicate that the soil temperature, moisture, water content, pH, substrate availability, and average annual temperature and precipitation significantly impact enzyme activities. Additionally, climate change has shown ambiguous effects on these activities, causing both reductions and enhancements in enzyme catalytic functions.
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Affiliation(s)
- Jokūbas Daunoras
- Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257 Vilnius, Lithuania
| | - Audrius Kačergius
- Lithuanian Research Centre for Agriculture and Forestry, Kedainiai Distr., LT-58344 Akademija, Lithuania
| | - Renata Gudiukaitė
- Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257 Vilnius, Lithuania
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3
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Haystead J, Gilmour K, Sherry A, Dade-Robertson M, Zhang M. Effect of (in)organic additives on microbially induced calcium carbonate precipitation. J Appl Microbiol 2024; 135:lxad309. [PMID: 38111211 DOI: 10.1093/jambio/lxad309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/28/2023] [Accepted: 12/15/2023] [Indexed: 12/20/2023]
Abstract
AIM This study aimed to understand the morphological effects of (in)organic additives on microbially induced calcium carbonate precipitation (MICP). METHODS AND RESULTS MICP was monitored in real time in the presence of (in)organic additives: bovine serum albumin (BSA), biofilm surface layer protein A (BslA), magnesium chloride (MgCl2), and poly-l-lysine. This monitoring was carried out using confocal microscopy to observe the formation of CaCO3 from the point of nucleation, in comparison to conditions without additives. Complementary methodologies, namely scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction, were employed to assess the visual morphology, elemental composition, and crystalline structures of CaCO3, respectively, following the crystals' formation. The results demonstrated that in the presence of additives, more CaCO3 crystals were produced at 100 min compared to the reaction without additives. The inclusion of BslA resulted in larger crystals than reactions containing other additives, including MgCl2. BSA induced a significant number of crystals from the early stages of the reaction (20 min) but did not have a substantial impact on crystal size compared to conditions without additives. All additives led to a higher content of calcite compared to vaterite after a 24-h reaction, with the exception of MgCl2, which produced a substantial quantity of magnesium calcite. CONCLUSIONS The work demonstrates the effect of several (in)organic additives on MICP and sets the stage for further research to understand additive effects on MICP to achieve controlled CaCO3 precipitation.
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Affiliation(s)
- Jamie Haystead
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Katie Gilmour
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Angela Sherry
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom
| | - Martyn Dade-Robertson
- Hub for Biotechnology in the Built Environment, School of Architecture, Planning and Landscape, The Quadrangle, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
- Hub for Biotechnology in the Built Environment, Department of Architecture and Built Environment, Northumbria University, NE1 8ST, United Kingdom
| | - Meng Zhang
- Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom
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Xue ZF, Cheng WC, Wang L, Qin P, Xie YX, Hu W. Applying the first microcapsule-based self-healing microbial-induced calcium carbonate materials to prevent the migration of Pb ions. ENVIRONMENTAL RESEARCH 2023; 239:117423. [PMID: 37858687 DOI: 10.1016/j.envres.2023.117423] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/12/2023] [Accepted: 10/15/2023] [Indexed: 10/21/2023]
Abstract
Lead (Pb) accumulation can lead to serious threats to surrounding environments and damage to the liver and kidneys. In the past few years, microbial-induced carbonate precipitation (MICP) technology has been widely applied to achieve Pb immobilization due to its environmentally friendly nature. However, harsh pH conditions can cause the instability of the carbonate precipitation to degrade or dissolve, increasing the potential of Pb2+ migration into nearby environments. In this study, microcapsule-based self-healing microbial-induced calcium carbonate (MICC) materials were applied to prevent Pb migration. The highest sporulation rate of 95.8% was attained at 7 g/L yeast extract, 10 g/L NH4Cl, and 3.6 g/L Mn2+. In the germination phase, the microcapsule not only prevented the bacterial spores from being threatened by the acid treatment but secured their growth and reproduction. Micro analysis also revealed that cerussite, calcite, and aragonite minerals were present, while extracellular polymeric substances (EPSs) were identified via Fourier transform infrared spectroscopy (FTIR). These results confirm their involvement in combining Pb2+ and Ca2+. The immobilization efficiency of above 90% applied to MICC materials was attained, while it of below 5% applied to no MICC use was attained. The findings explore the potential of applying microcapsule-based self-healing MICC materials to prevent Pb ion migration when the calcium carbonate degrades under harsh pH conditions.
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Affiliation(s)
- Zhong-Fei Xue
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
| | - Wen-Chieh Cheng
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
| | - Lin Wang
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
| | - Peng Qin
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
| | - Yi-Xin Xie
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
| | - Wenle Hu
- School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (XAUAT), Xi'an, 710055, China.
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Li J, Achal V. Self-assembled silk fibroin cross-linked with genipin supplements microbial carbonate precipitation in building material. ENVIRONMENTAL MICROBIOLOGY REPORTS 2023; 15:797-808. [PMID: 37814459 PMCID: PMC10667665 DOI: 10.1111/1758-2229.13202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 09/06/2023] [Indexed: 10/11/2023]
Abstract
The process of microbially induced carbonate precipitation (MICP) is known to effectively improve engineering properties of building materials and so does silk fibroin (SF). Thus, in this study, an attempt was taken to see the improvement in sand, that is, basic building material coupled with MICP and SF. Urease producing Bacillus megaterium was utilized for MICP in Nutri-Calci medium. To improve the strength of SF itself in bacterial solution, it was cross-linked with genipin at the optimized concentration of 3.12 mg/mL. The Fourier transform infrared (FTIR) spectra confirmed the crosslinking of SF with genipin in bacterial solution. In order to understand how such cross-linking can improve engineering properties, sand moulds of 50 mm3 dimension were prepared that resulted in 35% and 55% more compressive strength than the one prepared with bacterial solution with SF and bacterial solution only, respectively with higher calcite content in former one. The FTIR, SEM, x-ray powder diffraction spectrometry and x-ray photoelectron spectroscopy analyses confirmed higher biomineral precipitation in bacterial solution coupled with genipin cross-linked SF. As the process of MICP is proven to replace cement partially from concrete without negatively influence mechanical properties, SF cross-linked with genipin can provide additional significance in developing low-carbon cement-based composites.
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Affiliation(s)
- Jiayu Li
- Department of Environmental Science and EngineeringGuangdong Technion—Israel Institute of TechnologyShantouGuangdongChina
- Guangdong Provincial Key Laboratory of Materials and Technologies for Energy ConversionGuangdong Technion—Israel Institute of TechnologyShantouGuangdongChina
| | - Varenyam Achal
- Department of Environmental Science and EngineeringGuangdong Technion—Israel Institute of TechnologyShantouGuangdongChina
- Guangdong Provincial Key Laboratory of Materials and Technologies for Energy ConversionGuangdong Technion—Israel Institute of TechnologyShantouGuangdongChina
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6
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Vaskevicius L, Malunavicius V, Jankunec M, Lastauskiene E, Talaikis M, Mikoliunaite L, Maneikis A, Gudiukaite R. Insights in MICP dynamics in urease-positive Staphylococcus sp. H6 and Sporosarcina pasteurii bacterium. ENVIRONMENTAL RESEARCH 2023; 234:116588. [PMID: 37423368 DOI: 10.1016/j.envres.2023.116588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/22/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Microbially induced calcite precipitation (MICP) is an efficient and eco-friendly technique that has attracted significant interest for resolving various problems in the soil (erosion, improving structural integrity and water retention, etc.), remediation of heavy metals, production of self-healing concrete or restoration of different concrete structures. The success of most common MICP methods depends on microorganisms degrading urea which leads to the formation of CaCO3 crystals. While Sporosarcina pasteurii is a well-known microorganism for MICP, other soil abundant microorganisms, such as Staphylococcus bacteria have not been thoroughly studied for its efficiency in bioconsolidation though MICP is a very important proccess which can ensure soil quality and health. This study aimed to analyze MICP process at the surface level in Sporosarcina pasteurii and a newly screened Staphylococcus sp. H6 bacterium as well as show the possibility of this new microorganism to perform MICP. It was observed that Staphylococcus sp. H6 culture precipitated 157.35 ± 3.3 mM of Ca2+ ions from 200 mM, compared to 176 ± 4.8 mM precipitated by S. pasteurii. The bioconsolidation of sand particles was confirmed by Raman spectroscopy and XRD analysis, which indicated the formation of CaCO3 crystals for both Staphylococcus sp. H6 and S. pasteurii cells. The water-flow test suggested a significant reduction in water permeability in bioconsolidated sand samples for both Staphylococcus sp. H6 and S. pasteurii. Notably, this study provides the first evidence that CaCO3 precipitation occurs on the surface of Staphylococcus and S. pasteurii cells within the initial 15-30 min after exposure to the biocementation solution. Furthermore, Atomic force microscopy (AFM) indicated rapid changes in cell roughness, with bacterial cells becoming completely coated with CaCO3 crystals after 90 min incubation with a biocementation solution. To our knowledge, this is the first time where atomic force microscopy was used to visualize the dynamic of MICP on cell surface.
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Affiliation(s)
- Laurynas Vaskevicius
- Department of Microbiology and Biotechnology, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania
| | - Vilius Malunavicius
- Department of Microbiology and Biotechnology, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania
| | - Marija Jankunec
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania
| | - Egle Lastauskiene
- Department of Microbiology and Biotechnology, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania
| | - Martynas Talaikis
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania
| | - Lina Mikoliunaite
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko St. 24, LT-03225, Vilnius, Lithuania; Laboratory of Spectroelectrochemistry, Department of Organic Chemistry, Center for Physical Sciences and Technology, Sauletekis Av. 3, LT-10257, Vilnius, Lithuania
| | - Andrius Maneikis
- Vilnius Gediminas Technical University, Sauletekis Av. 11, LT-10223, Vilnius, Lithuania
| | - Renata Gudiukaite
- Department of Microbiology and Biotechnology, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekis Av. 7, LT-10257, Vilnius, Lithuania.
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Yu X, Jiang N, Yang Y, Liu H, Gao X, Cheng L. Heavy metals remediation through bio-solidification: Potential application in environmental geotechnics. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115305. [PMID: 37517309 DOI: 10.1016/j.ecoenv.2023.115305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 07/19/2023] [Accepted: 07/23/2023] [Indexed: 08/01/2023]
Abstract
Heavy metals are pervasive pollutants found in water, soil, and solid wastes. Bio-solidification offers an environmentally friendly approach to immobilize heavy metal ions using two types of bacteria: urease-producing bacteria (UPB) and phosphatase-producing bacteria (PPB). UPB, exemplified by Sporosarcina pasteurii, secretes urease to hydrolyze urea and generate CO32- ions, while PPB, like Bacillus subtilis, produces alkaline phosphatase to hydrolyze organophosphate monoester (ROP) and produce PO43- ions. These ions react with heavy metal ions, effectively reducing their concentration by forming insoluble carbonate or phosphate precipitates. The success of bio-solidification is influenced by various factors, including substrate concentration, temperature, pH, and bacterial density. Optimal operational conditions can significantly enhance the remediation performance of heavy metals. UPB and PPB hold great potential for remediating heavy metal pollution in diverse contaminated areas such as tailings ponds, electroplating sewage, and garbage incineration plants. In conclusion, harnessing the power of these microbial methods can provide effective solutions for remediating heavy metal-induced pollution across a range of environmental conditions.
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Affiliation(s)
- Xiaoniu Yu
- Jiangsu Key Laboratory of Construction Materials, Southeast University, Nanjing 211189, China.
| | - Ningjun Jiang
- Institute of Geotechnical Engineering, Southeast University, Nanjing, Jiangsu 211189, China.
| | - Yang Yang
- School of Civil Engineering, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400044, China.
| | - Haijun Liu
- School of Civil Engineering, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing 400044, China.
| | - Xuecheng Gao
- School of Civil Engineering, Chongqing University; Chongqing University Industrial Technology Research Institute, Chongqing 400045, China.
| | - Liang Cheng
- School of Environmental and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu Province 212013, China.
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8
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Kim J, Kim D, Yun TS. Containment of sulfate in leachate as gypsum (CaSO 4·2H 2O) mineral formation in bio-cemented sand via enzyme-induced carbonate precipitation. Sci Rep 2023; 13:10938. [PMID: 37414789 DOI: 10.1038/s41598-023-37772-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/27/2023] [Indexed: 07/08/2023] Open
Abstract
Enzymatically induced carbonate precipitation (EICP) using urea hydrolysis is a well-known bio-cementation process that not only promotes the precipitation of calcium carbonate (CaCO3) but can provide excess calcium cations for further reaction depending on the substrate constituents and reaction stage. This study presents the EICP recipe to contain sulfate ions in landfill leachate sufficiently using remaining calcium cations and a series of tests were conducted to validate its ability to retain sulfates. The reaction rate for 1 M CaCl2 and 1.5 M urea was identified by controlling the purified urease content and the curing time of the EICP process. The results showed that 0.3 g/L of purified urease produced 46% CaCO3 and reduced sulfate ions by 77% after 3 days of curing. The shear stiffness in EICP-treated sand was enhanced 13 times by CaCO3 precipitation followed by 1.12 times increment due to subsequent precipitation of gypsum (CaSO4·2H2O) crystals implying sulfate containment. A cost-efficient EICP treatment using soybean crude urease instead of lab-grade purified urease exhibited lower sulfate removal efficiency (i.e., 18%) with only nominal formation of gypsum in the EICP-treated sand. The addition of gypsum powder was effective in increasing sulfate removal by 40% when soybean crude urease was used for EICP.
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Affiliation(s)
- Junghoon Kim
- Department of Civil and Environmental Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Daehyun Kim
- Department of Civil and Environmental Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Department of Civil and Environmental Engineering, Hiroshima University, 1‑4‑1 Kagamiyama, Higashi‑Hiroshima, Hiroshima, 739‑8527, Japan
| | - Tae Sup Yun
- Department of Civil and Environmental Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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Hu X, Liu J, Cheng W, Li X, Zhao Y, Wang F, Geng Z, Wang Q, Dong Y. Synergistic interactions of microbial fuel cell and microbially induced carbonate precipitation technology with molasses as the substrate. ENVIRONMENTAL RESEARCH 2023; 228:115849. [PMID: 37024030 DOI: 10.1016/j.envres.2023.115849] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 05/16/2023]
Abstract
The application of microbially induced carbonate precipitation (MICP) technology is critical, but many challenges remain. In this paper, a microbial fuel cell (MFC) is used to treat molasses wastewater, and the effluent is used as the substrate to promote the growth of urease-producing bacteria. The results showed that the maximum voltage of MFC was 500 mV, and the maximum power density was 169.86 mW/m2. The mineralization rate reached 100% on the 15th day, and the mineralized product was calcite CaCO3. According to the microbial community analysis, the unclassified_Comamondaceae, Arcobacter, and Aeromonas, which could improve the OH-, signal molecular transmission and small molecular nutrients to promote the urease activity of urease-producing bacteria. The above conclusions provide a new way to reuse molasses wastewater efficiently and to apply MICP technology in dust suppression.
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Affiliation(s)
- Xiangming Hu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China; State Key Laboratory of Mine Lab Disaster Prevention and Control Co-found By Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Jindi Liu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
| | - Weimin Cheng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China; State Key Laboratory of Mine Lab Disaster Prevention and Control Co-found By Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Xiao Li
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China.
| | - Yanyun Zhao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
| | - Feng Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
| | - Zhi Geng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
| | - Qingshan Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
| | - Yue Dong
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China
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Zhou X, Wang G, Zhang H, Jia C, Tang G. Multi-scale analysis of the mechanism of microbially induced calcium carbonate precipitation consolidation loess. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27862-w. [PMID: 37269526 DOI: 10.1007/s11356-023-27862-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/19/2023] [Indexed: 06/05/2023]
Abstract
Microbial-induced calcium carbonate precipitation (MICP) treatment of consolidated loess has the advantages of high efficiency and environmental protection. In this study, changes in the microscopic pore structure of loess before and after MICP treatment were compared and quantified, combined with test results at different scales, to better understand the mechanisms of MICP-consolidated loess. The unconfined compressive strength (UCS) of MICP-consolidated loess is significantly increased, and the stress-strain curve indicates improved strength and stability of the loess. X-ray diffraction (XRD) test results show that the signal strength of calcium carbonate crystals is significantly enhanced after loess consolidation. The microstructure of the loess was determined by scanning electron microscopy (SEM). The loess SEM microstructure images are quantitatively analyzed using comprehensive image processing methods (including gamma adjustment, grayscale threshold selection, median processing). The changes in microscopic pore area and average pore sizes (Feret diameter) of the loess before and after consolidation are described. More than 95% of the pores consist of pores with a pore area of less than 100 μm2 and an average pore size of less than 20 μm. The total percentage of pore numbers with pore areas of 100-200 and 200-1000 μm2 decreased by 1.15% after MICP consolidation, while those with 0-1 and 1-100 μm2 increased. The percentage of pore numbers with an average pore size greater than 20 μm decreased by 0.93%, while the 0-1, 1-10, and 10-20 μm increased. Particle size distributions revealed a significant increase in particle size after MICP consolidation, with an increase of 89 μm in D50.
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Affiliation(s)
- Xingyu Zhou
- School of Engineering and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China
| | - Guihe Wang
- School of Engineering and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China.
| | - Haonan Zhang
- School of Engineering and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China
| | - Cangqin Jia
- School of Engineering and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China
- Key Laboratory of Deep Geodrilling Technology, Ministry of Land and Resources, Beijing, 100083, People's Republic of China
| | - Guowang Tang
- School of Engineering and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China
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Hemayati M, Nikooee E, Habibagahi G, Niazi A, Afzali SF. New non-ureolytic heterotrophic microbial induced carbonate precipitation for suppression of sand dune wind erosion. Sci Rep 2023; 13:5845. [PMID: 37037897 PMCID: PMC10086056 DOI: 10.1038/s41598-023-33070-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/06/2023] [Indexed: 04/12/2023] Open
Abstract
The detrimental effects of sand storms on agriculture, human health, transportation network, and infrastructures pose serious threats in many countries worldwide. Hence, wind erosion is considered a global challenge. An environmental-friendly method to suppress wind erosion is to employ microbially induced carbonate precipitation (MICP). However, the by-products of ureolysis-based MICP, such as ammonia, are not favorable when produced in large volumes. This study introduces two calcium formate-bacteria compositions for non-ureolytic MICP and comprehensively compares their performance with two calcium acetate-bacteria compositions, all of which do not produce ammonia. The considered bacteria are Bacillus subtilis and Bacillus amyloliquefaciens. First, the optimized values of factors controlling CaCO3 production were determined. Then, wind tunnel tests were performed on sand dune samples treated with the optimized compositions, where wind erosion resistance, threshold detachment velocity, and sand bombardment resistance were measured. An optical microscope, scanning electron microscope (SEM), and X-ray diffraction analysis were employed to evaluate the CaCO3 polymorph. Calcium formate-based compositions performed much better than the acetate-based compositions in producing CaCO3. Moreover, B. subtilis produced more CaCO3 than B. amyloliquefaciens. SEM micrographs clearly illustrated precipitation-induced active and inactive bounds and imprints of bacteria on CaCO3. All compositions considerably reduced wind erosion.
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Affiliation(s)
- Mohammad Hemayati
- Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Zand Street, Shiraz, 71348-51156, Iran
| | - Ehsan Nikooee
- Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Zand Street, Shiraz, 71348-51156, Iran.
| | - Ghassem Habibagahi
- Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Zand Street, Shiraz, 71348-51156, Iran
| | - Ali Niazi
- Institute of Biotechnology, Shiraz University, Shiraz, Iran
| | - Sayed Fakhreddin Afzali
- Department of Natural Resource and Environmental Engineering, Shiraz University, Shiraz, Iran
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Mohammed Mohammed HA, Souhaila M, Eddine LS, Hasan GG, Kir I, Mahboub MS. A novel biosynthesis of MgO/PEG nanocomposite for organic pollutant removal from aqueous solutions under sunlight irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:57076-57085. [PMID: 36928702 DOI: 10.1007/s11356-023-26422-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The novel synthesis of MgO from Laurus nobilis L. leaves was prepared using the green synthesis method. It is using direct blending process to decorate MgO/PEG nanocomposite to enhance the photodegradation properties and examine its physical properties using diverse characterization techniques, including XRD, FTIR, SEM, EDX, and UV-Vis. X-ray diffraction reveals a cubic phase of MgO with a 37-nm grain size. SEM images confirm spherical nanoparticles with a diameter size of 22.9 nm. The optical energy gap of MgO NPs was 4.4 eV, and the MgO/PEG nanocomposite was 4.1 eV, which made it an efficient catalyst under sunlight. The photocatalytic activity of Rose Bengal (RB) and Toluidine Blue (TB) dyes at 5 × 10-5 mol/l dye concentration indicates excellent degradation efficiencies of 98% and 95% in 120 min, respectively, under sunlight irradiation. MgO/PEG is an excellent candidate nanocomposite for applications of photodegradation and could be used for its potential capability to develop conventionally used techniques.
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Affiliation(s)
- Hamdi Ali Mohammed Mohammed
- Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
- Laboratory of Biotechnology Biomaterials and Condensed Matter, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
| | - Meneceur Souhaila
- Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
- Laboratory of Biotechnology Biomaterials and Condensed Matter, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
| | - Laouini Salah Eddine
- Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria.
- Laboratory of Biotechnology Biomaterials and Condensed Matter, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria.
| | - Gamil Gamal Hasan
- Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
| | - Iman Kir
- Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
- Laboratory of Biotechnology Biomaterials and Condensed Matter, Faculty of Technology, University of El Oued, 39000, El Oued, Algeria
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Zidane Y, Laouini SE, Bouafia A, Meneceur S, Tedjani ML, Alshareef SA, Almukhlifi HA, Al-Essa K, Al-Essa EM, Rahman MM, Madkhali O, Menaa F. Green synthesis of multifunctional MgO@AgO/Ag 2O nanocomposite for photocatalytic degradation of methylene blue and toluidine blue. Front Chem 2022; 10:1083596. [PMID: 36590276 PMCID: PMC9798100 DOI: 10.3389/fchem.2022.1083596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
Introduction: In this paper, MgO@AgO/Ag2O nanoparticles were greenly synthesized, the current idea is to replace the harmful chemical technique with an ecofriendly synthesis of metal oxide nanoparticles (NPs) utilizing biogenic sources. Methods: The current investigation was conducted to create silver oxide NPs decorated by MgO NPs (namely, MgO@AgO/Ag2O nanocom-posite) using the leaves extract of Purslane (Portulaca Oleracea) as the reducing and capping agent. The nanopowder was investigated by means of X-ray diffraction, scanning electron mi-croscope, BET surface area, Fourier transform infrared, and UV-vis spectrophotom-eter studies. XRD studies reveal the monophasic nature of these highly crystalline silver nano-particles. SEM studies the shape and morphology of the synthesis AgO/Ag2O and MgO@AgO/Ag2O NPs. The presence of magnesium and oxygen was further confirmed by EDS profile. Results and discussion: The surface area was found to be 9.1787 m2/g and 7.7166 m2/g, respectively. FTIR analysis showed the presence of specific functional groups. UV-vis spectrophotometer studies show the absorption band at 450 nm due to surface plasmon resonance. The results have also indicated the high performance of the greenly synthesized AgO/Ag2O NPs and MgO@AgO/Ag2O NPs for photocatalytic activity dye degradation (methylene blue and toluidine blue).
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Affiliation(s)
- Younes Zidane
- Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued, Algeria,Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued, Algeria
| | - Salah E. Laouini
- Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued, Algeria,Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued, Algeria
| | - Abderrhmane Bouafia
- Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued, Algeria,Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued, Algeria
| | - Souhaila Meneceur
- Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued, Algeria,Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued, Algeria
| | - Mohammed L. Tedjani
- Department of Process Engineering, Faculty of Technology, University of El Oued, El-Oued, Algeria,Laboratory of Biotechnology Biomaterial and Condensed Matter, Faculty of Technology, University of El Oued, El-Oued, Algeria,*Correspondence: Mohammed L. Tedjani, ; Farid Menaa,
| | - Sohad A. Alshareef
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Hanadi A. Almukhlifi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | | | | | - Mohammed M. Rahman
- Center of Excellence for Advanced Materials Research (CEAMR) and Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osama Madkhali
- Department of Physics, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Farid Menaa
- Department of Biomedical and Environmental Engineering (BEE), Fluorotronics, Inc.-California Innovations Corporation, San Diego, CA, United States,*Correspondence: Mohammed L. Tedjani, ; Farid Menaa,
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