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2. Sulfate-reducing microorganism - Wikipedia

   en.wikipedia.org/wiki/Sulfate-reducing_microorganism

   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]

3. Sulfur-reducing bacteria - Wikipedia

   en.wikipedia.org/wiki/Sulfur-reducing_bacteria

   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 ...

4. Biogenic sulfide corrosion - Wikipedia

   en.wikipedia.org/wiki/Biogenic_sulfide_corrosion

   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.

5. Simultaneously extracted metals and acid-volatile sulfide

   en.wikipedia.org/wiki/Simultaneously_extracted...

   When dissolved in water, sulfide has a high affinity for numerous heavy metal ions. [5] That is, the solubility-product constants (K sp ) for the sulfides of these metals are very small, meaning they will precipitate as solids when a heavy metal ion and sulfide ion come into contact, as in Equation 2, where M 2+ is a generic metal in the +2 ...

6. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Water conditioning: This is a method of reducing the effects of hard water. In water systems subject to heating hardness salts can be deposited as the decomposition of bicarbonate ions creates carbonate ions that precipitate out of solution. Water with high concentrations of hardness salts can be treated with soda ash (sodium carbonate) which ...

7. Is This Toxic Mold? How To Know If It's In Your House—And Why ...

   www.aol.com/toxic-mold-know-house-why-184500544.html

   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 ...