A laboratory investigation on suppression of dust from wind erosion using biocementation with Bacillus amyloliquefaciens
| Autor: | Ali Niazi, Arsalan Ghahramani, Ghassem Habibagahi, Mohammad Mehdi Mohebbi |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Curing (food preservation) biology Bacillus amyloliquefaciens 030106 microbiology General Engineering Soil science 010501 environmental sciences biology.organism_classification 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Calcium carbonate Nutrient chemistry Carbon dioxide Aeolian processes Environmental science Ecosystem Bacteria 0105 earth and related environmental sciences |
| Zdroj: | Scientia Iranica. |
| ISSN: | 2345-3605 |
| Popis: | Dust events are among the serious environmental challenges in some countries. Sustainable solutions can be applied to tackle this problem by considering soil as a living ecosystem. Biocementation based on production of carbonates by heterotrophic bacteria is one of the favored methods to suppress the dust from wind erosion because this type of bacteria produces calcium carbonate (main product) as well as water and carbon dioxide (by-products). In present research, bacterial species of Bacillus amyloliquefaciens was used. First, bacteria were cultivated to reach toa pre-determined concentration. Next, bacterial cells and nutrients in the form of solution were sprayed on the soil surface. Then, samples were tested in a closed circuit wind tunnel. Three main groups of samples were tested: without sand bombardment and undisturbed soil surface, with sand bombardment and undisturbed soil surface, and without sand bombardment and with disturbed soil surface. The results show that the implemented method for stabilization of soil was efficient. Moreover, based on the results of second group of tests, curing duration, amount of water, temperature-water interaction and water -bacterial cells interaction were found to be of considerable significance. |
| Databáze: | OpenAIRE |
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