| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423322000 | Elemental phosphorus | 6 |
| 20090238746 | PHOSPHORUS RECOVERY METHOD AND PHOSPHORUS RECOVERY SYSTEM - A phosphorus recovery method and a phosphorus recovery system which can make equipment size small, and can be added easily also to an existing wastewater treatment facility, and can recover phosphorus by low cost, are provided. A phosphorus compound adsorption material includes a nitrogen containing compound which has an amino group at an end of molecular structure, a carrier supporting the nitrogen containing compound, and zinc ion or iron ion fixed to the nitrogen containing compound. After passing water to be treated containing phosphorus to an adsorption tower filled up with this phosphorus compound adsorption material to make phosphorus stick to the phosphorus compound adsorption material, a drug solution for desorption is supplied to the adsorption tower, and phosphorus is desorbed in liquid and is recovered. | 09-24-2009 |
| 20100150807 | APPARATUS FOR PREPARING CA-P BIOMATERIAL BY PURIFICATION METHOD OF DIALYSIS AND SEPARATION - An apparatus for preparing Ca—P biomaterial by purification method of dialysis and separation is provided. The apparatus comprises a synthesis reactor( | 06-17-2010 |
| 20100178229 | ELEMENTAL SOLVENTS - Use of ionic liquids as solvents for elements such as phosphorus, selenium, tellurium and sulphur, and compounds thereof. | 07-15-2010 |
| 20120251424 | METHOD FOR THE REMOVAL OF PHOSPHORUS - A process for producing a hydrocarbon from biomass. A feed stream containing biomass having fatty acids, mono-, di-, and/or triglycerides, and a phosphorus content of between about 1 wppm and about 1,000 wppm is provided. A heated hydrocarbon solvent and a hydrogen-rich gas are provided. The feed stream, the heated hydrocarbon solvent, and the hydrogen-rich gas are combined in the presence of a low activity hydrogenation catalyst. A spent low activity hydrogenation catalyst is recovered at the end of a run wherein the spent low activity hydrogenation catalyst contains at least 3% by weight phosphorus. | 10-04-2012 |
| 20130272944 | METHOD FOR RECYCLING ORGANIC WASTE MATERIAL - A method for recycling organic waste material containing phosphorus oxides and metal oxides is particularly suited for recycling sewage sludge. The waste materials are mixed with chlorine carriers and then heat-treated at an air ratio of 0.85≦λ≦1.6 and at least partially oxidized. The metal chlorides thus formed are drawn off and recovered and the fraction remaining after the metal chlorides have been drawn off is subjected to reduction in order to obtain elemental phosphorus. | 10-17-2013 |
| 20160185599 | METHOD OF PURIFYING YELLOW PHOSPHORUS - The present invention relates to a method of purifying yellow phosphorus, and more particularly, to a method of effectively removing impurities from yellow phosphorus used as raw materials of a phosphoric acid to increase purity of the phosphoric acid, the method including: removing impurities from the phosphoric acid by adding an oxidizing agent to the yellow phosphorus, followed by stirring; and adding a solution including an additive having a specific functional group in a chemical structure to the yellow phosphorus from which the impurities are removed, followed by stirring. | 06-30-2016 |
