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  2. Diatomaceous earth - Wikipedia

    en.wikipedia.org/wiki/Diatomaceous_earth

    Diatomite rock sample from Sisquoc Formation Scanning electron micrograph of diatomaceous earth. Diatomaceous earth (/ ˌ d aɪ. ə t ə ˈ m eɪ ʃ ə s / DY-ə-tə-MAY-shəs), also known as diatomite (/ d aɪ ˈ æ t ə m aɪ t / dy-AT-ə-myte), celite, or kieselguhr, is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder.

  3. Diatomaceous earth filtration - Wikipedia

    en.wikipedia.org/wiki/Diatomaceous_earth_filtration

    Diatomaceous earth filtration is a special filtration process that removes particles from liquids as it passes through a layer of fossilized remains of microscopic water organism called diatoms. These diatoms are mined from diatomite deposits which are located along the Earth's surface as they have accumulated in sediment of open and moving ...

  4. Hydrated silica - Wikipedia

    en.wikipedia.org/wiki/Hydrated_silica

    Diatomaceous earth, originally mined as "tooth powder" is a naturally occurring hydrated silica.As a fine gel abrasive, frequently combined with softer calcium carbonate (from chalk) it helps to remove plaque.

  5. Diatom - Wikipedia

    en.wikipedia.org/wiki/Diatom

    Diatomaceous earth (diatomite) is a collection of diatom shells found in the Earth's crust. They are soft, silica-containing sedimentary rocks which are easily crumbled into a fine powder and typically have a particle size of 10 to 200 μm.

  6. Fuller's earth - Wikipedia

    en.wikipedia.org/wiki/Fuller's_earth

    Fuller's earth is the most common spelling today, but both fullers earth and fullers' earth remain in wide use. [4] Fuller's earth is also known by the following other names: Bleaching clay, [5] probably because fulling whitened the cloth. Whitening clay, particularly when used to treat facial pigmentation, such as melasma.

  7. Rotary vacuum-drum filter - Wikipedia

    en.wikipedia.org/wiki/Rotary_vacuum-drum_filter

    Basically, the drum surface is pre coated with a filter aid such as diatomaceous earth (DE) or perlite to improve filtration and increase cake permeability. It then undergoes the same process cycle as the conventional rotary vacuum drum filter however, pre coat filtration uses a higher precision blade to scrape off the cake.

  8. No those weren't transmitters in Kamala Harris' ears during ...

    www.aol.com/no-evidence-were-transmitters-kamala...

    The claim: Kamala Harris wore 'audio earrings' during presidential debate. A Sept. 10 Facebook post (direct link, archive link) shows side-by-side photos, ...

  9. Anticaking agent - Wikipedia

    en.wikipedia.org/wiki/Anticaking_agent

    Diatomaceous earth, mostly consisting of silicon dioxide (SiO 2), may also be used as an anticaking agent in animal foods, typically mixed at 2% rate of a product dry weight. [ 9 ] List of anticaking agents