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They use the dissimilatory sulfate reduction pathway to oxidize hydrogen or organic compounds and reduce oxidized sulfur compounds for energy conservation. This genus produce hydrogen sulfide gas as a byproduct. They are found in a variety of environments like marine sediments, oil fields, anaerobic waste-water treatment plants, and mud volcanoes.
Corrosion may occur where stale sewage generates hydrogen sulfide gas into an atmosphere containing oxygen gas and high relative humidity. There must be an underlying anaerobic aquatic habitat containing sulfates and an overlying aerobic aquatic habitat separated by a gas phase containing both oxygen and hydrogen sulfide at concentrations in excess of 2 ppm.
The first in which biological sulfur reduction occurs, the second through which dissolved H 2 S in wastewaters is stripped into hydrogen sulfide gas, and the third consists in the treatment of flue gases, removing over 90% of SO 2 and NO, according to this study. Furthermore, the 88% of the sulfur input would be recovered as octasulfur and then ...
Sulfate-reducing microorganisms are responsible for the sulfurous odors of salt marshes and mud flats. Much of the hydrogen sulfide will react with metal ions in the water to produce metal sulfides. These metal sulfides, such as ferrous sulfide (FeS), are insoluble and often black or brown, leading to the dark color of sludge. [2]
They can grow using oxidized sulfur compounds present in the effluent as electron acceptor and excrete hydrogen sulfide (H 2 S). This gas is then emitted in the aerial part of the pipe and can impact the structure in two ways: either directly by reacting with the material and leading to a decrease in pH, or indirectly through its use as a ...
Another theory suggests that microbial volatile organic compounds (mVOCs) like mold spores can cause physical health problems, but more research is needed, says Jordan Peccia, PhD, professor and ...
Sulfates may be generated both by the energy released by radioisotopes as well as by other chemical reactions. Generated hydrogen sulfide may be a continuous energy source for this organism. [ 3 ] Some organisms can obtain energy from sources other than from the sun or other stars, which means similar lifeforms may be found on other planets in ...
Skin changes can occur after prolonged exposure to any heat source, Camp noted, including laptops, heated car seats, hot water bottles, electric blankets, space heaters and heating pads used to ...