Where is Bacillus Pasteurii found?
B. pasteurii is a soil-borne microbe that is known to be non-toxigenic and non-pathogenic to the human species. Although it is not thought to be an indigenous inhabitant of the human intestine, it has been isolated from human feces and is considered a contaminate of the gut.
What is ureolytic bacteria?
Ureolytic bacteria are key organisms in the rumen producing urease enzymes to catalyze the breakdown of urea to ammonia for the synthesis of microbial protein. However, little is known about the diversity and distribution of rumen ureolytic microorganisms.
How does a Micp work?
During the MICP process, calcium ions are added to a solution to precipitate calcium carbonate, in the heavy metal containment MICP process, calcium carbonates can also incorporate heavy metals (e.g., Cd and Pb2+) into their surfaces via substitution of suitable divalent cations (Ca2+) in the carbonate lattice, which …
What is Biocement?
Biocement refers to CaCO3 deposit that formed due to microorganism activity in the system rich of calcium ion. The primary role of microorganism in carbonate precipitation is mainly due to their ability to create an alkaline environment (high pH and DIC increase) through their various physiological activities.
Where is Sporosarcina found?
ureae is distributed across the globe and is typically found in fertile soils and is especially prevalent in those containing high levels of urea. Its ability to grow in the presence of high amounts of urea is due to its ability to convert urea in soil to ammonia through the production of urease.
What diseases are caused by spores?
Spore-forming bacteria cause a plethora of dis- eases that target multiple organs and manifest with varied presentation; examples are tetanus (Clostridium tetani), botulism (Clostridium botu- linum) and gas gangrene (Clostridium perfrin- gens).
At what pH does calcium carbonate precipitate?
between about 6.5 and 10
Causes of Calcium Carbonate Precipitation At pH values of between about 6.5 and 10, bicarbonate is dominant. At pH values greater than about 10.5, the carbonate ion dominates. The causes of precipitation include the following. For groundwater, pumping reduces the pressure of the water as it flows into the well.
How is Biocement made?
Biocement bricks are another product that can be ‘grown’. Instead of requiring a significant amount of heat in the production process, these bricks are created by using a bacterial byproduct to fuse sand particles together and form a durable building material.
Where is Bioconcrete used?
When used in the construction of bridges, tunnels, and roads, bio-concrete has the potential to save billions on annual maintenance fees. At the moment, Jonkers is working to reduce the cost of the material for use in large-scale projects.
