THE ROLE OF BACILLUS PASTEURII ON THE CHANGE OF PARAMETERS OF SANDS ACCORDING TO TEMPERATURE COMPRESION AND WIND EROSION RESISTANCE
Journal Title: Journal CleanWAS - Year 2017, Vol 1, Issue 2
Abstract
Microorganisms have played a critical role in geological processes and in the formation of soils throughout geological time. It is hypothesized that biological activity can also affect soil properties in short engineering time-scales. Nowadays, Bio-grout is a new soil improvement method based on microbiologically induced precipitation of calcium carbonate. For this purpose, bacteria, which are able to convert urea into ammonium and carbonate, are injected into the soil, followed by a solution containing urea and calcium chloride and therefore it is produced carbonate precipitates with calcium. The calcium carbonate crystals form bridges between the sand grains, which increases the strength of the sand mass. In this study, focus is placed on bio-mediated calcite precipitation of sands and Sporosarcina pasteurii was chosen for the experimental part of the study. This study has examined the effect of temperatures and the soil compaction amount on optimising calcite precipitation induced by sporosarcina pasteurii. The result demonstrated that most bacterial activities were seen on 60◦C and according to the tests result, medium compaction (Dr 56%) is the best case for compatibility between the soil grain characteristics and bacteria size for transportation. It seems bio-mediated treatment techniques can result in the improvement of soil properties and increased the soil strength in wind erosion resistance test.
Authors and Affiliations
Maysam Bahmani, Ali Noorzad, Javad Hamedi, Fatemeh Sali
Keywords
Related Articles
- EP ID EP261015
- DOI 10.26480/jcleanwas.02.2017.01.05
- Views 140
- Downloads 0
EMPLOYMENT OPPORTUNITIES WITH PROMOTING WASTE MANAGEMENT IN INDIA
Being a developing nation, India is undergoing several issues in its journey from being developing to developed. Out of these issues’ proper management of waste and unemployment are two major hurdles in its journey of gr...
THE ROLE OF BACILLUS PASTEURII ON THE CHANGE OF PARAMETERS OF SANDS ACCORDING TO TEMPERATURE COMPRESION AND WIND EROSION RESISTANCE
Microorganisms have played a critical role in geological processes and in the formation of soils throughout geological time. It is hypothesized that biological activity can also affect soil properties in short engineerin...
MODELING FLOOD HAZARD USING SWAT AND 3D ANALYSIS IN TERENGGANU WATERSHED
One of the anthropogenic interference is the modification of natural habitat into the man-made environment, such as agriculture, urbanization mining, lumbering as well as industrialization. The kenyir lake as an artifici...
BEACH LITTER AND GRADING OF THE COASTAL LANDSCAPE FOR TOURISM DEVELOPMENT IN SECTIONS OF GUYANA’S COAST
Beach litter constitutes one of the glaring signs of pollution in coastal landscape and environment. In this study, litter presence and composition were assessed for the five (5) sampling sites along the coastline in thr...
ASSESSING ACCIDENT HOTSPOTS BY USING VOLUNTEERED GEOGRAPHIC INFORMATION
Due to the ever-increasing number of vehicles, transportation issues, especially transportation safety have gained great importance. One of the social problems in the world, and particularly in developing countries, whic...