What are the uses of phosphoric acid?
phosphoric acid, also called orthophosphoric acid, (H3PO4), the most important oxygen acid of phosphorus, used to make phosphate salts for fertilizers. It is also used in dental cements, in the preparation of albumin derivatives, and in the sugar and textile industries.
What is wet phosphoric acid?
Phosphoric acid, H3PO4, is produced from phosphate rock by wet process or thermal process. 80% of the world’s phosphoric acid is obtained by the wet process. The wet process consists of reaction, filtration and concentration steps. The phosphate rock is ground and acidified with sulfuric acid in the reactor vessel.
How is phosphoric acid prepared?
In a wet process facility (see figure 1), phosphoric acid is produced by reacting sulfuric acid (H2SO4) with naturally occurring phosphate rock. The reaction also forms calcium sulfate (CaSO4), commonly referred to as gypsum. Further evaporation of the solvent can be performed for a high-concentration phosphoric acid.
What process is used to extract phosphate?
PARFORCE Technology is an industrial process for the extraction of phosphate from secondary raw materials. The acronym stands for “Phosphoric Acid Recovery From Organic Residues and Chemicals by Electrochemistry”.
What hydrofluoric acid is used for?
Hydrogen fluoride is used to make refrigerants, herbicides, pharmaceuticals, high-octane gasoline, aluminum, plastics, electrical components, and fluorescent light bulbs.
What is phosphoric acid used for in water treatment?
Uses of Phosphoric Acid in Water Treatment Phosphoric Acid is used to prevent the after effects of groundwater exposure to iron and manganese, better known as “red water” (from iron) and “black water” (from manganese). When iron and manganese are exposed to air, they oxidize and discolor the water.
What is wet process?
Wet-Processing is the processing stage at which textile substrate is treated with colourants and/or chemicals, collectively referred to as inputs in GOTS terminology. This includes sizing, desizing, pre-treatment, dyeing, printing (including digital printing), finishing, laundry, etc.
Which reaction can be used to prepare phosphorus acid?
The correct answer is : D), P4 + conc. HNO3 will form together the phosphoric acid. Actually, the reaction is very fast and here the nitric acid acts as oxidizing agent and reduces phosphorus while the phosphorous being more reactive than nitrogen, replaces that from its compound.
Which reaction can be used to prepare phosphoric acid?
Which evaporator is used to concentrate the dilute acid produced in wet process method by h2so4 leaching?
Which evaporator is used to concentrate the dilute acid produced in wet process method by H2SO4 leaching? Explanation: The dilute acid (phosphoric acid) produced in wet process by H2SO4 leaching method is concentrated in a single effect evaporator up to 50%.
What is the formula of phosphoric acid?
Which is the major raw material used for production of h3po4?
by using 2 or 3 vacuum evaporators. Raw materials for the production of phosphoric acid by the thermal process are elemental (yellow) phosphorus, air, and water. Thermal process phosphoric acid manufacture, as shown schematically in Figure 8.9-2, involves 3 major steps: (1) combustion, (2) hydration, and (3) demisting.