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08 Life Cycle Inventories of Chemicals

Oct 29, 2002 · ammonium nitrate phosphate, at regional storehouse RER Nemecek et al. 2007 ammonium nitrate, as N, at regional storehouse RER Nemecek et al. 2007 ammonium sulphate, as N, at regional storehouse RER Nemecek et al. 2007 ammonium thiocyanate, at plant GLO Sutter 2007a anhydrite rock, at mine CH Kellenberger et al. 2007

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Sulfuric Acid - Agricultural Marketing Service

www.ams.usda.gov

72 fertilizers. For example, sulfuric acid is used to treat phosphate rock, an insoluble material containing 73 phosphorous in the form of calcium phosphate (Stoker, 2007). The treatment of phosphate rock with 74 sulfuric acid yields phosphorus acid in the following reaction: 75 76 Ca 3 (PO 4) 2 + 3H 2 SO 4 3CaSO 4 + 2H 3 PO 4 77

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40 Common Minerals and Their Uses

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Phosphate rock Used to produce phosphoric acid for ammoniated phosphate fertilizers, feed additives for livestock, elemental phosphorus, and a variety of phosphate chemicals for industrial and home consumers. U.S. production occurs in Florida, North Carolina, Idaho and Utah. The U.S. is a major producer. It was not import reliant in 2012. Potash

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Rock phosphate has virtually disappeared from the market because of its very low water solubility and high transportation costs. Rock phosphate may, however, supply sufficient P for good crop growth where soils are moderately acid and where decom-posing organic matter is abundant. Application of

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Pastures for horses

www.dpi.nsw.gov.au

of rock phosphate mixed with 1.5 kilograms of molasses or 1 kilogram of a mixture of 1.33 kilograms of ground limestone and 0.66 kilograms of dicalcium phosphate mixed with 1.5 kilograms of molasses. Alternatively, supplement with a feed that is a good source of calcium such as lucerne hay. Fodder crops

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Effluent Standards - Faolex

extwprlegs1.fao.org

phosphate radicals) 4.0 . Applicable scope Effluent characteristics Effluent limits Notes ammonia nitrogen and orthophosphate generated by the ... soil or rock processing and extraction industries Chemical oxygen demand (COD) 100 Suspended solids 50 . Applicable scope Effluent characteristics Effluent

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Phosphate Rock - USGS

pubs.usgs.gov

PHOSPHATE ROCK (Data in thousand metric tons unless otherwise noted) Domestic Production and Use: In 2020, phosphate rock ore was mined by five firms at 10 mines in four States and processed into an estimated 24 million tons of marketable product, valued at $1.7 billion, free on board (f.o.b.) mine.

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Rocks & Minerals

www.kean.edu

Geologists are not just interested in using rock types to understand the geologic history of a region. It is also important to understand the distribution of rocks and minerals for practical applications. Mineral resources include nonfood, nonfuel materials such as metals (e.g., aluminum, gold) and industrial minerals (e.g., gypsum, phosphate ...

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Carbon and Nitrogen Cycles

faculty.weber.edu

Phosphate Cycle ! PO 4 3-plentiful but often insoluble " Precipitates with Mg2+, Ca2+ " Available phosphate limiting in environment " Moves from organic to inorganic forms " …

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Inherent Factors Affecting Soil Phosphorus

www.nrcs.usda.gov

4. Touch phosphate test strip into soil water slurry such that the tip is barely wet until the liquid is drawn up at least 1/8" to 3/16 beyond the "area masked by soil (Figure 4). 5. After 1 to 2 minutes, measure the phosphate by comparing the color of the wetted test strips to the color scale on the test strip container (Figure 5).

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