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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Chlorine, sulfur and carbon (as coal) are cheapest by mass. Hydrogen, nitrogen, oxygen and chlorine are cheapest by volume at atmospheric pressure. When there is no public data on the element in its pure form, price of a compound is used, per mass of element contained. This implicitly puts the value of compounds' other constituents, and the ...

  3. Soil carbon - Wikipedia

    en.wikipedia.org/wiki/Soil_carbon

    Soil carbon is present in two forms: inorganic and organic. Soil inorganic carbon consists of mineral forms of carbon, either from weathering of parent material, or from reaction of soil minerals with atmospheric CO 2. Carbonate minerals are the dominant form of soil carbon in desert climates. Soil organic carbon is present as soil organic matter.

  4. Soil organic matter - Wikipedia

    en.wikipedia.org/wiki/Soil_organic_matter

    Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal detritus at various stages of decomposition, cells and tissues of soil microbes, and substances that soil microbes synthesize.

  5. Gold extraction - Wikipedia

    en.wikipedia.org/wiki/Gold_extraction

    Organic carbon present in gold ore may adsorb dissolved gold-cyanide complexes in much the same way as activated carbon. This so-called "preg-robbing" carbon is washed away because it is significantly finer than the carbon recovery screens typically used to recover activated carbon. [3] Pre-treatment options for refractory ores include: Roasting

  6. Organic matter - Wikipedia

    en.wikipedia.org/wiki/Organic_matter

    Organic matter, organic material, or natural organic matter refers to the large source of carbon-based compounds found within natural and engineered, terrestrial, and aquatic environments. It is matter composed of organic compounds that have come from the feces and remains of organisms such as plants and animals . [ 1 ]

  7. Soil organic carbon - Wikipedia

    en.wikipedia.org/?title=Soil_organic_carbon&...

    Pages for logged out editors learn more. Contributions; Talk; Soil organic carbon

  8. Bad weather and crop failure sent the price of the bean soaring to record highs in 2024. Oil ended the year with a loss, while coal also slipped. Forget oil and metals.

  9. Carbon sequestration - Wikipedia

    en.wikipedia.org/wiki/Carbon_sequestration

    Following carbon dioxide (CO2) absorption from the atmosphere, plants deposit organic matter into the soil. [23] This organic matter, derived from decaying plant material and root systems, is rich in carbon compounds. Microorganisms in the soil break down this organic matter, and in the process, some of the carbon becomes further stabilized in ...