ferrous

(adjective)

Iron-based.

Related Terms

Examples of ferrous in the following topics:

  • Iron Oxidation

    • Ferrous iron is a soluble form of iron that is stable at extremely low pHs or under anaerobic conditions.
    • Under aerobic, moderate pH conditions ferrous iron is oxidized spontaneously to the ferric (Fe3+) form and is hydrolyzed abiotically to insoluble ferric hydroxide (Fe(OH)3).
    • There are three distinct types of ferrous iron-oxidizing microbes.
    • The second type of microbes oxidizes ferrous iron at cirum-neutral pH.
    • Outline the purpose of iron oxidation and the three types of ferrous iron-oxidizing microbes (acidophiles, microaerophiles and anaerobic photosynthetic bacteria)

  • Microbial Ore Leaching

    • In the first step, disulfide is spontaneously oxidized to thiosulfate by ferric iron (Fe3+), which in turn is reduced to give ferrous iron (Fe2+):
    • Bacteria are added in the second step and recover Fe3+ from ferrous iron (Fe2+) which is then reused in the first step of leaching :
    • The net products of the reaction are soluble ferrous sulfate and sulfuric acid.
    • Bioleaching reactions industrially are performed by many bacterial species that can oxidize ferrous iron and sulfur.
    • Bacterial cells oxidizing the ferrous iron back to ferric iron while using slightly different contact mechanisms with the metal.

  • Iron

    • Iron, the active site of many redox enzymes, has many oxidation states, but ferrous (Fe2+) and ferric (Fe3+) are the most common.
    • Like other Group 8 elements, iron exists in a wide range of oxidation states, although +2 (ferrous) and +3 (ferric) are the most common.
    • Iron chemical compounds, which include ferrous (Fe2+) and ferric (Fe3+) compounds, have many uses.
    • Aside from the ferric and ferrous oxidation states, iron also occurs in higher oxidation states.
    • The ferrous halides typically arise from treating iron metal with the corresponding binary halogen acid to give the corresponding hydrated salts.

  • The Law of Definite Composition

    • These compounds are known as non-stoichometric compounds, and examples include ferrous oxide.

  • Aluminum

    • Aluminum is the most widely used non-ferrous metal.

  • Electron Donors and Acceptors

    • Inorganic electron donors include hydrogen, carbon monoxide, ammonia, nitrite, sulfur, sulfide, and ferrous iron.

  • Sulfate and Sulfur Reduction

    • These metal sulfides, such as ferrous sulfide (FeS), are insoluble and often black or brown, leading to the dark color of sludge.

  • Wetland Soils

    • In low redox conditions the deposition of ferrous iron (Fe2+) will increase with decreasing decomposition rates, thus preserving organic remains and depositing humus.

  • Types of Catabolism

    • All these different forms of metabolism depend on redox reactions that involve the transfer of electrons from reduced donor molecules such as organic molecules, water, ammonia, hydrogen sulfide or ferrous ions to acceptor molecules such as oxygen, nitrate or sulfate.

  • Electrolytic Properties

    • It is possible to oxidize ferrous ions to ferric ions at the anode.