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Diatomaceous earth - Revision history



Revision history for this page on the wiki



Last Build Date: Wed, 22 Nov 2017 06:42:53 GMT

 



AnomieBOT: Dating maintenance tags: {{Citation needed}}

Tue, 21 Nov 2017 09:11:09 GMT

Dating maintenance tags: {{Citation needed}} ← Previous revision Revision as of 09:11, 21 November 2017 Line 141: Line 141:   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.     − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed}} + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed|date=November 2017}}       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



Mikenorton: /* Safety considerations */ need a source for that

Tue, 21 Nov 2017 08:50:41 GMT

‎Safety considerations: need a source for that ← Previous revision Revision as of 08:50, 21 November 2017 Line 141: Line 141:   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.     − Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis. + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.{{citation needed}}       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



86.25.145.118: /* References */Added content.

Tue, 21 Nov 2017 06:58:20 GMT

References: Added content.

← Previous revision Revision as of 06:58, 21 November 2017
Line 157: Line 157:
   
 
== References ==
 
== References ==
{{Reflist|30em}}
+
{{Reflist|30em}
  +
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566238/
   
 
== External links ==
 
== External links ==



86.25.145.118: /* Safety considerations */Added content.

Tue, 21 Nov 2017 06:57:20 GMT

‎Safety considerations: Added content. ← Previous revision Revision as of 06:57, 21 November 2017 Line 140: Line 140:       Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   Today, workers are required to use respiratory-protection measures when concentrations of silica exceed allowable levels.   +   + Occupational exposure to certain silica dust, such as Diatomaceous Earth has been linked to certain autoimmune diseases such as Systemic Lupus Erythmatosus snd also Rheumatoid Arthritis.       Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form.   Diatomite produced for pool filters is treated with high heat ([[calcination]]) and a fluxing agent ([[soda ash]]), causing the formerly harmless amorphous silicon dioxide to assume its crystalline form. [...]



Shellwood: Reverted edits by 2601:602:CD00:1AD4:7967:2E5D:743F:13CE (talk) (HG) (3.1.22)

Fri, 03 Nov 2017 23:18:07 GMT

Reverted edits by 2601:602:CD00:1AD4:7967:2E5D:743F:13CE (talk) (HG) (3.1.22) ← Previous revision Revision as of 23:18, 3 November 2017 Line 69: Line 69:   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]     − In 1866, [[Alfred Nobel]] discovered thet [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite. + In 1866, [[Alfred Nobel]] discovered that [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite.       === Filtration ===   === Filtration === [...]



2601:602:CD00:1AD4:7967:2E5D:743F:13CE: /* Explosives */

Fri, 03 Nov 2017 23:17:51 GMT

‎Explosives ← Previous revision Revision as of 23:17, 3 November 2017 Line 69: Line 69:   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]   [[File:Diatoms through the microscope.jpg|thumb|Live marine diatoms from Antarctica (magnified)]]     − In 1866, [[Alfred Nobel]] discovered that [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite. + In 1866, [[Alfred Nobel]] discovered thet [[nitroglycerin]] could be made much more stable if absorbed in diatomite. This allows much safer transport and handling than nitroglycerin in its raw form. He patented this mixture as [[dynamite]] in 1867; the mixture is also called guhr dynamite.       === Filtration ===   === Filtration === [...]



Wannanah: Changed plural of

Tue, 26 Sep 2017 22:05:02 GMT

Changed plural of ← Previous revision Revision as of 22:05, 26 September 2017 Line 4: Line 4:   '''Diatomaceous earth''' ({{IPAc-en|pron|ˌ|d|aɪ|.|ə|t|ə|ˌ|m|eɪ|ʃ|ə|s|_|ˈ|ɜr|θ}}), also known as '''D.E.''', '''diatomite''', or '''kieselgur'''/'''kieselguhr''', is a naturally occurring, soft, [[siliceous]] [[sedimentary rock]] that is easily crumbled into a fine [[Shades of white|white to off-white]] powder. It has a particle size ranging from less than 3 [[micrometres]] to more than 1 millimetre, but typically 10 to 200 micrometres. Depending on the granularity, this powder can have an [[abrasive]] feel, similar to [[pumice]] powder, and has a low [[density]] as a result of its high [[porosity]]. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% [[silica]], with 2 to 4% [[alumina]] (attributed mostly to [[clay mineral]]s) and 0.5 to 2% [[iron oxide]].{{cite book |last=Antonides |first=Lloyd E. |title=Diatomite |year=1997 |publisher=[[U.S.G.S.]] |url=http://minerals.usgs.gov/minerals/pubs/commodity/diatomite/250497.pdf |accessdate=December 12, 2010 |format=PDF}}   '''Diatomaceous earth''' ({{IPAc-en|pron|ˌ|d|aɪ|.|ə|t|ə|ˌ|m|eɪ|ʃ|ə|s|_|ˈ|ɜr|θ}}), also known as '''D.E.''', '''diatomite''', or '''kieselgur'''/'''kieselguhr''', is a naturally occurring, soft, [[siliceous]] [[sedimentary rock]] that is easily crumbled into a fine [[Shades of white|white to off-white]] powder. It has a particle size ranging from less than 3 [[micrometres]] to more than 1 millimetre, but typically 10 to 200 micrometres. Depending on the granularity, this powder can have an [[abrasive]] feel, similar to [[pumice]] powder, and has a low [[density]] as a result of its high [[porosity]]. The typical chemical composition of oven-dried diatomaceous earth is 80 to 90% [[silica]], with 2 to 4% [[alumina]] (attributed mostly to [[clay mineral]]s) and 0.5 to 2% [[iron oxide]].{{cite book |last=Antonides |first=Lloyd E. |title=Diatomite |year=1997 |publisher=[[U.S.G.S.]] |url=http://minerals.usgs.gov/minerals/pubs/commodity/diatomite/250497.pdf |accessdate=December 12, 2010 |format=PDF}}     − Diatomaceous earth consists of fossilized remains of [[diatom]]s, a type of hard-shelled [[protist]]s ([[chrysophytes]]). It is used as a [[filtration]] aid, mild abrasive in products including metal polishes and [[toothpaste]], mechanical [[insecticide]], [[absorption (chemistry)|absorbent]] for liquids, matting agent for coatings, reinforcing filler in plastics and rubber, anti-block in plastic films, porous support for chemical catalysts, [[cat litter]], activator in [[blood clotting]] studies, a stabilizing component of [[dynamite]], and a [[thermal insulation|thermal insulator]]. + Diatomaceous earth consists of fossilized remains of [[diatom]]s, a type of hard-shelled [[protist]] ([[chrysophytes]]). It is used as a [[filtration]] aid, mild abrasive in products including metal polishes and [[toothpaste]], mechanical [[insecticide]], [[absorption (chemistry)|absorbent]] for liquids, matting agent for coatings, reinforcing filler in plastics and rubber, anti-block in plastic films, porous support for chemical catalysts, [[cat litter]], activator in [[blood clotting]] studies, a stabilizing component of [[dynamite]], and a [[thermal insulation|thermal insulator]].       == Geology and occurrence ==   == Geology and occurrence == [...]



173.161.166.180: /* Use in agriculture */

Fri, 15 Sep 2017 18:12:22 GMT

‎Use in agriculture ← Previous revision Revision as of 18:12, 15 September 2017 Line 94: Line 94:       === Use in agriculture ===   === Use in agriculture === − Natural freshwater diatomaceous earth is used in agriculture for grain storage as an [[anticaking agent]], as well as an insecticide.{{cite web |url=https://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |title=Prevention and Management of Insects and Mites in Farm-Stored Grain |publisher=Province of Manitoba |accessdate=July 7, 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20131018021402/http://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |archivedate=October 18, 2013 |df=mdy }} It is approved by the Food and Drug Administration as a feed additive{{cite web | url=https://www.gpo.gov/fdsys/pkg/CFR-2001-title21-vol6/pdf/CFR-2001-title21-vol6-sec573-340.pdf | title=21 CFR 573.340 - Diatomaceous earth | publisher=[[Food and Drug Administration]]/U.S. Government Publishing Office | work=Code of Federal Regulations (annual edition)—Title 21 - Food and Drugs—Part 573 - Food additives permitted in feed and drinking water of animals—Section 573.340 - Diatomaceous earth | date=April 1, 2001 | accessdate=February 9, 2016}} to prevent caking. + Natural freshwater diatomaceous earth is used in agriculture for grain storage as an [[anticaking agent]], as well as an insecticide.{{cite web |url=https://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |title=Prevention and Management of Insects and Mites in Farm-Stored Grain |publisher=Province of Manitoba |accessdate=July 7, 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20131018021402/http://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |archivedate=October 18, 2013 |df=mdy }} It is approved by the Food and Drug Administration as a feed additive{{cite web | url=https://www.gpo.gov/fdsys/pkg/CFR-2001-title21-vol6/pdf/CFR-2001-title21-vol6-sec573-340.pdf | title=21 CFR 573.340 - Diatomaceous earth | publisher=[[Food and Drug Administration]]/U.S. Government Publishing Office | work=Code of Federal Regulations (annual edition)—Title 21 - Food and Drugs—Part 573 - Food additives permitted in feed and drinking water of animals—Section 573.340 - Diatomaceous earth | date=April 1, 2001 | accessdate=February 9, 2016}} to prevent caking.       Some believe it may be used as a natural [[anthelmintic]] (dewormer), although studies have not shown it to be effective. Some farmers add it to their livestock and [[Chicken|poultry]] feed to prevent the caking of feed.[http://www.sgggc.org/insect-management-food-processing-facilities-heat-diatomaceous-earth/ Diatomaceous Earth (DE)] "Food Grade Diatomaceous Earth" is widely available in agricultural feed supply stores.   Some believe it may be used as a natural [[anthelmintic]] (dewormer), although studies have not shown it to be effective. Some farmers add it to their livestock and [[Chicken|poultry]] feed to prevent the caking of feed.[http://www.sgggc.org/insect-management-food-processing-facilities-heat-diatomaceous-earth/ Diatomaceous Earth (DE)] "Food Grade Diatomaceous Earth" is widely available in agricultural feed supply stores. [...]



InternetArchiveBot: Rescuing 1 sources and tagging 0 as dead. #IABot (v1.5.1)

Sun, 10 Sep 2017 05:47:30 GMT

Rescuing 1 sources and tagging 0 as dead. #IABot (v1.5.1) ← Previous revision Revision as of 05:47, 10 September 2017 Line 94: Line 94:       === Use in agriculture ===   === Use in agriculture === − Natural freshwater diatomaceous earth is used in agriculture for grain storage as an [[anticaking agent]], as well as an insecticide.{{cite web|url=https://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |title=Prevention and Management of Insects and Mites in Farm-Stored Grain |publisher=Province of Manitoba |accessdate=July 7, 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20131018021402/http://www.gov.mb.ca:80/agriculture/crops/cropproduction/faa06s00.html |archivedate=October 18, 2013 |df=mdy}} It is approved by the Food and Drug Administration as a feed additive{{cite web | url=https://www.gpo.gov/fdsys/pkg/CFR-2001-title21-vol6/pdf/CFR-2001-title21-vol6-sec573-340.pdf | title=21 CFR 573.340 - Diatomaceous earth | publisher=[[Food and Drug Administration]]/U.S. Government Publishing Office | work=Code of Federal Regulations (annual edition)—Title 21 - Food and Drugs—Part 573 - Food additives permitted in feed and drinking water of animals—Section 573.340 - Diatomaceous earth | date=April 1, 2001 | accessdate=February 9, 2016}} to prevent caking. + Natural freshwater diatomaceous earth is used in agriculture for grain storage as an [[anticaking agent]], as well as an insecticide.{{cite web |url=https://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |title=Prevention and Management of Insects and Mites in Farm-Stored Grain |publisher=Province of Manitoba |accessdate=July 7, 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20131018021402/http://www.gov.mb.ca/agriculture/crops/cropproduction/faa06s00.html |archivedate=October 18, 2013 |df=mdy }} It is approved by the Food and Drug Administration as a feed additive{{cite web | url=https://www.gpo.gov/fdsys/pkg/CFR-2001-title21-vol6/pdf/CFR-2001-title21-vol6-sec573-340.pdf | title=21 CFR 573.340 - Diatomaceous earth | publisher=[[Food and Drug Administration]]/U.S. Government Publishing Office | work=Code of Federal Regulations (annual edition)—Title 21 - Food and Drugs—Part 573 - Food additives permitted in feed and drinking water of animals—Section 573.340 - Diatomaceous earth | date=April 1, 2001 | accessdate=February 9, 2016}} to prevent caking.       Some believe it may be used as a natural [[anthelmintic]] (dewormer), although studies have not shown it to be effective. Some farmers add it to their livestock and [[Chicken|poultry]] feed to prevent the caking of feed.[http://www.sgggc.org/insect-management-food-processing-facilities-heat-diatomaceous-earth/ Diatomaceous Earth (DE)] "Food Grade Diatomaceous Earth" is widely available in agricultural feed supply stores.   Some believe it may be used as a natural [[anthelmintic]] (dewormer), although studies have not shown it to be effective. Some farmers add it to their livestock and [[Chicken|poultry]] feed to prevent the caking of feed.[http://www.sgggc.org/insect-management-food-processing-facilities-heat-diatomaceous-earth/ Diatomaceous Earth (DE)] "Food Grade Diatomaceous Earth" is widely available in agricultural feed supply stores. [...]



Thnidu: /* Catalyst support */

Sat, 09 Sep 2017 16:11:53 GMT

‎Catalyst support ← Previous revision Revision as of 16:11, 9 September 2017 Line 91: Line 91:       === Catalyst support===   === Catalyst support=== − Diatomaceous earth also finds some use as a [[Catalyst support|support]] for [[catalyst]]s, generally serving to maximize a catalyst's [[surface area]] and [[Activity (chemistry)|activity]]. For example, [[nickel]], referred to as Ni–Kieselguhr, can be supported on the material to improve its activity as a [[hydrogenation]] catalyst.{{cite book|last1=Nishimura|first1=Shigeo|title=Handbook of Heterogeneous Catalytic Hydrogenation for Organic Synthesis|date=2001|publisher=Wiley-Interscience|location=Newyork|isbn=9780471396987|pages=2–5|edition=1st|url=https://books.google.com/books?id=RjZRAAAAMAAJ&q=0471396982&dq=0471396982&hl=en&sa=X&ei=BCacVMTgN5LmoASd34KQCQ&ved=0CB8Q6AEwAA}} + Diatomaceous earth also finds some use as a [[Catalyst support|support]] for [[catalyst]]s, generally serving to maximize a catalyst's [[surface area]] and [[Activity (chemistry)|activity]]. For example, [[nickel]] can be supported on the material{{snd}}the combination is called Ni–Kieselguhr{{snd}}to improve its activity as a [[hydrogenation]] catalyst.{{cite book|last1=Nishimura|first1=Shigeo|title=Handbook of Heterogeneous Catalytic Hydrogenation for Organic Synthesis|date=2001|publisher=Wiley-Interscience|location=Newyork|isbn=9780471396987|pages=2–5|edition=1st|url=https://books.google.com/books?id=RjZRAAAAMAAJ&q=0471396982&dq=0471396982&hl=en&sa=X&ei=BCacVMTgN5LmoASd34KQCQ&ved=0CB8Q6AEwAA}}       === Use in agriculture ===   === Use in agriculture === [...]