The biological oxidation of Fe2+ in mine drainage waters can result in red discoloration in steams...

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Biology

The biological oxidation of Fe2+ in mine drainage waters canresult in red discoloration in steams from subsequent Fe3+precipitation
(a) Name the type of organism responsible for this process
(b) Is this reaction spontaneous? Show calculations to justifyyour answer
(c) Write a balanced overall equation for biological of Fe2+,assuming fs(max) and the presence of ammonia
(d) How many grams of oxygen are required per gram of Fe2+oxidized?
plz let me know the detailed procedure especially (c)

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3.8 Ratings (657 Votes)

Acid mine drainage impacts stream and river ecosystemsthrough acidity ferric ion Fe3 precipitation oxygendepletion and release of heavy metals associated with coal andmetal mining such as aluminum Al3 zincZn2 and manganese Mn2When mineral deposits that contain sulfides are minedthey have the potential to produce acid mine drainage Thisincludes the mining of coal copper gold silver zinc lead anduranium The mineral pyrite more commonly known as fools goldis iron disulfide FeS2 Pyrite is one of the mostimportant sulfides found in the waste rock of mines When exposedto water and oxygen it can react to form sulfuric acidH2SO4 The following oxidation andreduction reactions express the breakdown of pyrite that leads toacid mine drainage1 2FeS2 7O2 2H2O 2FeSO4 2H2SO42 2Fe2 12 O2 2H 2Fe3 H2O3 Fe3 3H2O FeOH3 3H4 FeS2s 154 O2 72H2O 4H 2SO4 FeOH3 sProduction of acid mine drainage can occur long aftermines have been abandoned if piles of waste rock are in contactwith air and water The red color often seen in streams receivingacid mine drainage is actually a stain on See Answer

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