Iron Bacteria

Also found in: Wikipedia.

iron bacteria

[′ī·ərn bak′tir·ē·ə]
The common name for bacteria capable of oxidizing ferrous iron to the ferric state.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Iron Bacteria


bacteria that are able to oxidize ferrous iron compounds and to use the energy thus liberated to assimilate carbon from carbon dioxide or carbonates. The equation for the oxidation is

4Fe(HCO3)2 + 6H2O + O2 = 4Fe(OH)3 +4H2CO3 + 4CO2

In this reaction a small amount of energy is liberated; there-fore, iron bacteria oxidize a large amount of ferrous iron.

The iron bacterium whose physiology and biochemistry has been studied the most thoroughly is the nonsporiferous, mobile bacillus Thiobacillus ferrooxidans, which also oxidizes sulfur. The iron bacteria also include some thread bacteria of the species Leptothrix, with thick rust-colored capsules (sheaths) containing hydrated iron oxide, and Gallionella, which consists of clusters of extremely fine threads (0.01 micron) twisted into spirals, forming pedicles on whose surface hydrated iron oxide is deposited. Iron bacteria live in fresh and salty bodies of water and play a large role in the iron cycle in nature. On the bottoms of bodies of water, iron bacteria form dark brown disk-shaped concretions consisting of iron and manganese.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Studies on chemoautotrophiic iron bacteria, Thiobacillus ferrooxidans: an improved medium and a harvesting procedure for securing high cellular yields.
You can test on your own (kits can test for pH, total chlorine, hydrogen sulfide, iron, copper, nitrites and iron bacteria) or send samples to a lab.
In this study, laboratory tests have shown that Cd or Cr contaminants could be adsorbed and precipitated using iron-based complexes produced by the metabolism of iron bacteria A.
Co-precipitated products from iron bacteria and heavy metals also had poor crystallinity and contained large amounts of amorphous materials(as shown in Fig 7, 8).
In order to investigate the mechanism of deposition of heavy metals by iron bacteria, two conical flasks of 300 ml, numbered I and II, were used for liquid experiments.
* presence of slime-forming organisms other than iron bacteria (such organisms feed on ammonia and organic matter).
The iron bacteria oxidize ferrous iron to ferric iron by using the derived energy for the chemo-synthetic assimilation of carbon.
Gallionella, a true iron bacteria, is a rod or kidney-shaped bacteria that secretes long, slender, twisted bands or stalks of ferric hydroxide.
One example is iron bacteria. These promote corrosion by producing deposits of iron hydroxides that synergistically promote SRB activity.
Water quality is critical when dealing with groundwater, so the Multifilm system filters it for sediment and sulfur and iron bacteria.