Menetelmä jäte-POX:ien, alendronaatin ja sen sivutuotteiden poistamiseksi
Disclosed is a process for removing by-product phosphorus-containing (POx) materials, alendronate and alendronate byproducts from crude mother liquors in an omega amino-1-hydroxy-C2-C6 alkylidene-1,1-bisphosphonic acid synthesis process, e.g. alendronate sodium. Calcium chloride is added first to th...
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| creator | MCKINNEY, DONALD VENKATARAMANI, EDAMANAL S MAGLIETTE, JR., RALPH J FORMAN, ANDREW L |
| description | Disclosed is a process for removing by-product phosphorus-containing (POx) materials, alendronate and alendronate byproducts from crude mother liquors in an omega amino-1-hydroxy-C2-C6 alkylidene-1,1-bisphosphonic acid synthesis process, e.g. alendronate sodium. Calcium chloride is added first to the crude mother liquors, then calcium oxide to precipitate the POx materials, then neutralized to about pH 7 to complete precipitation. Substantially all of the alendronate sodium active ingredient is removed from the precipitate. Following filtration, the POx filtercake can then be disposed of by incineration, landfilling or reclamation of usable phosphorus as fertilizer. The remaining filtrate can then be further treated in an environmentally acceptable manner by wastewater treatment or recycling to the process. |
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Calcium chloride is added first to the crude mother liquors, then calcium oxide to precipitate the POx materials, then neutralized to about pH 7 to complete precipitation. Substantially all of the alendronate sodium active ingredient is removed from the precipitate. Following filtration, the POx filtercake can then be disposed of by incineration, landfilling or reclamation of usable phosphorus as fertilizer. 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| subjects | ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Menetelmä jäte-POX:ien, alendronaatin ja sen sivutuotteiden poistamiseksi |
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