Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material
Microbially Induced Calcite Precipitation (MICP) is an eco-friendly method for improving sandy soils, relying on micro-organisms that require nitrogen and essential nutrients to induce carbonate mineral precipitation. Given the substantial annual generation of chicken manure (CM) and the associated...
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024017833 |
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| author | Moein Khoshdel Sangdeh Payam Zanganeh Ranjbar Meghdad Payan Mahyar Arabani |
| author_facet | Moein Khoshdel Sangdeh Payam Zanganeh Ranjbar Meghdad Payan Mahyar Arabani |
| author_sort | Moein Khoshdel Sangdeh |
| collection | DOAJ |
| description | Microbially Induced Calcite Precipitation (MICP) is an eco-friendly method for improving sandy soils, relying on micro-organisms that require nitrogen and essential nutrients to induce carbonate mineral precipitation. Given the substantial annual generation of chicken manure (CM) and the associated challenges in its disposal resulting in environmental pollution, the nutrient-rich composted form of this waste material is proposed in this study as a supplementary additive (along with more costly industrial reagents, e.g., urea) to provide the necessary carbon and nitrogen for the MICP process. To this end, different CM contents (5 %, 10 %, and 15 %) along with various concentrations of cementation solution (1 M, 1.5 M, and 2 M) are employed in multiple improvement cycles to augment the efficiency of the MICP technique. Unconfined Compressive Strength (UCS), Ultrasonic Pulse Velocity (UPV), and Water Absorption (WA) tests are performed to assess the mechanical properties of the samples before and after exposure to freeze-thaw (F-T) cycles, while SEM, XRD, and FTIR analyses are carried out to delineate the formation of calcite within the porous structure of MICP-CM-treated sands. The findings suggest that an optimum percentage of CM (10 %) in the MICP process not only contributes to environmental conservation but also significantly enhances all the mechanical properties of bio-cemented sandy soils due to markedly improved bonding within their porous fabric. The results also show that although prolonged exposure to consecutive F-T cycles causes a reduction in strength and stiffness of enhanced MICP-treated soils, the mechanical properties of such geo-composites still remain within an acceptable range for optimal CM-enhanced bio-cemented mixtures, significantly superior to those of MICP-treated sands. |
| format | Article |
| id | doaj-art-c31d66d54b224e75b3fb7a00fdd48b6b |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-c31d66d54b224e75b3fb7a00fdd48b6b2024-12-19T10:59:54ZengElsevierResults in Engineering2590-12302024-12-0124103540Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation materialMoein Khoshdel Sangdeh0Payam Zanganeh Ranjbar1Meghdad Payan2Mahyar Arabani3Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, IranCorresponding author.; Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, IranDepartment of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, IranDepartment of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, IranMicrobially Induced Calcite Precipitation (MICP) is an eco-friendly method for improving sandy soils, relying on micro-organisms that require nitrogen and essential nutrients to induce carbonate mineral precipitation. Given the substantial annual generation of chicken manure (CM) and the associated challenges in its disposal resulting in environmental pollution, the nutrient-rich composted form of this waste material is proposed in this study as a supplementary additive (along with more costly industrial reagents, e.g., urea) to provide the necessary carbon and nitrogen for the MICP process. To this end, different CM contents (5 %, 10 %, and 15 %) along with various concentrations of cementation solution (1 M, 1.5 M, and 2 M) are employed in multiple improvement cycles to augment the efficiency of the MICP technique. Unconfined Compressive Strength (UCS), Ultrasonic Pulse Velocity (UPV), and Water Absorption (WA) tests are performed to assess the mechanical properties of the samples before and after exposure to freeze-thaw (F-T) cycles, while SEM, XRD, and FTIR analyses are carried out to delineate the formation of calcite within the porous structure of MICP-CM-treated sands. The findings suggest that an optimum percentage of CM (10 %) in the MICP process not only contributes to environmental conservation but also significantly enhances all the mechanical properties of bio-cemented sandy soils due to markedly improved bonding within their porous fabric. The results also show that although prolonged exposure to consecutive F-T cycles causes a reduction in strength and stiffness of enhanced MICP-treated soils, the mechanical properties of such geo-composites still remain within an acceptable range for optimal CM-enhanced bio-cemented mixtures, significantly superior to those of MICP-treated sands.http://www.sciencedirect.com/science/article/pii/S2590123024017833Bio-cemented sandUnconfined compressive strength (UCS)Ultrasonic pulse velocity (UPV)Microbially induced calcite precipitation (MICP)Composted chicken manure (CM)Freeze-thaw (F-T) cycle |
| spellingShingle | Moein Khoshdel Sangdeh Payam Zanganeh Ranjbar Meghdad Payan Mahyar Arabani Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material Results in Engineering Bio-cemented sand Unconfined compressive strength (UCS) Ultrasonic pulse velocity (UPV) Microbially induced calcite precipitation (MICP) Composted chicken manure (CM) Freeze-thaw (F-T) cycle |
| title | Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| title_full | Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| title_fullStr | Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| title_full_unstemmed | Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| title_short | Enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| title_sort | enhanced biological treatment of sandy soils through the application of chicken manure as a supplementation material |
| topic | Bio-cemented sand Unconfined compressive strength (UCS) Ultrasonic pulse velocity (UPV) Microbially induced calcite precipitation (MICP) Composted chicken manure (CM) Freeze-thaw (F-T) cycle |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024017833 |
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