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As of 2015, the top phosphate rock source are Algeria, Egypt, Morocco, Jordan and Peru. [9] By 2013, 35 percent of Philphos' total production serves the Philippine market while the remaining 65 percent exported to foreign markets namely Vietnam, Thailand, Malaysia, Indonesia and Cambodia, India, Bangladesh, Pakistan, and Taiwan.
The construction industry is the number one user of phosphogypsum in 2020, with 10.5 Mt used as concrete set retarder and 3.5 Mt used in drywall. [13] It is also used as a chemical feedstock for producing sulfates , and as a soil conditioner similar to regular gypsum. [ 14 ]
Nauru and the Philippines made a joint venture in the phosphate industry and raw phosphate from Nauru was processed in plants built in the Philippines. $35 million was invested in the joint venture, which Nauru later claimed to amount to $60 million by 1997 The venture suffered a loss amounting to $1.2 billion. [3]
The small island nation of Nauru and its neighbor Banaba Island, which used to have massive phosphate deposits of the best quality, have been mined excessively. Rock phosphate can also be found in Egypt, Israel, Palestine, Western Sahara, Navassa Island, Tunisia, Togo, and Jordan, countries that have large phosphate-mining industries.
SHMP is used as a sequestrant and has applications within a wide variety of industries, including as a food additive in which it is used under the E number E452i. Sodium carbonate is sometimes added to SHMP to raise the pH to 8.0–8.6, which produces a number of SHMP products used for water softening and detergents.
Today, RONPhos currently employs 20.4 per cent of the working population of the Republic of Nauru. Although the initial layer of phosphate has been mined out (approximately 100 million tonnes), a secondary level of phosphate is believed to exist, holding nearly 20 million tonnes of minable resources.
It's used in kutsinta, a type of rice cake from the Philippines together with pitsi-pitsî. [4] In Assam, north east India, extensive use is made of a type of lye called khar in Assamese and karwi in Boro which is obtained by filtering the ashes of various banana stems, roots and skin in their cooking and also for curing, as medicine and as a ...
The term phosphate is also used in organic chemistry for the functional groups that result when one or more of the hydrogens are replaced by bonds to other groups. These acids, together with their salts and esters , include some of the best-known compounds of phosphorus, of high importance in biochemistry , mineralogy , agriculture , pharmacy ...