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  2. Argon - Wikipedia

    en.wikipedia.org/wiki/Argon

    Argon is the cheapest alternative when nitrogen is not sufficiently inert. Argon has low thermal conductivity. Argon has electronic properties (ionization and/or the emission spectrum) desirable for some applications. Other noble gases would be equally suitable for most of these applications, but argon is by far the cheapest.

  3. Inert gas - Wikipedia

    en.wikipedia.org/wiki/Inert_gas

    The more carbon dioxide that is added to the inert gas, such as argon, will increase your penetration. The amount of carbon dioxide is often determined by what kind of transfer you will be using in GMAW. The most common is spray arc transfer, and the most commonly used gas mixture for spray arc transfer is 90% argon and 10% carbon dioxide.

  4. Metabolic waste - Wikipedia

    en.wikipedia.org/wiki/Metabolic_waste

    In plants, resins, fats, waxes, and complex organic chemicals are exuded from plants, e.g., the latex from rubber trees and milkweeds. Solid waste products may be manufactured as organic pigments derived from breakdown of pigments like hemoglobin, and inorganic salts like carbonates, bicarbonates, and phosphate, whether in ionic or in molecular ...

  5. Agricultural wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Agricultural_wastewater...

    Piggery waste is comparable to other animal wastes and is processed as for general animal waste, except that many piggery wastes contain elevated levels of copper that can be toxic in the natural environment. The liquid fraction of the waste is frequently separated off and re-used in the piggery to avoid the prohibitively expensive costs of ...

  6. Air separation - Wikipedia

    en.wikipedia.org/wiki/Air_separation

    A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.

  7. The Hanford Site is America's most contaminated nuclear ... - AOL

    www.aol.com/hanford-americas-most-contaminated...

    Soon, a waste management plant will turn the waste into glass, which can be stored away for thousands of years. It's a slow, costly process. Yet time is of the essence.

  8. Asphyxiant gas - Wikipedia

    en.wikipedia.org/wiki/Asphyxiant_gas

    Toxic gases, by contrast, cause death by other mechanisms, such as competing with oxygen on the cellular level (e.g. carbon monoxide) or directly damaging the respiratory system (e.g. phosgene). Far smaller quantities of these are deadly. Notable examples of asphyxiant gases are methane, [1] nitrogen, argon, helium, butane and propane

  9. Are Christmas trees toxic to cats? How to cat-proof ... - AOL

    www.aol.com/christmas-trees-toxic-cats-cat...

    These holiday and Christmas plants are dangerous to cats. Here are some common holiday and Christmas plants that are dangerous to cats, according to Purina: Poinsettia. Holly. Mistletoe. Amaryllis ...