recovery of precious metals from aqueous verfahrensstru00f6men in the synthesis of glyphosate using absorptionsmedien as ion-exchange resins

摘要

Claim 1: a process for recovering noble metal from a process Stream comprising an aqueous Solubilized noble metal and is generated in a process to make a product N - (PHOSPHONOMETHYL) glycine by oxidation catalyzed by a noble metal substrate acid n - (PHOSPHONOMETHYL) i Minodiacu00e9tico,The recovery process is characterised in that it comprises: contacting at least a portion of the aqueous process flow generated in the process to make a product N - (PHOSPHONOMETHYL) glycine by oxidation catalyzed by a noble metal substrate acid n - (PHOSPHONOMETHYL) iminodia Cu00e9tico an adsorber with a noble metal to remove at least a portion ofL Solubilized noble metal and produce a Flow of Aqueous process treated with lower concentration of noble metal and a noble metal adsorption Medium comprising noble metal.Claim 30: a process to make a product N - (PHOSPHONOMETHYL) glycineCharacterized in that it comprises: a substrate oxidize acid n - (PHOSPHONOMETHYL) iminodiu00e1cetico System in an oxidation reactor in the presence of an Oxidation Catalyst comprising a noble metal to produce a mixture of reaction products including a noble metal Catalyst and Solution reaction products including Product N - (PHOSPHONOMETHYL Glycine Solub) and noble metalIlizado; precipitate Crystals of Product N - (PHOSPHONOMETHYL Glycine Solution) from the reaction products to produce a Slurry Product comprising Crystals Precipitated Product N - (PHOSPHONOMETHYL) glycine and mother Liquors containing noble metal Separating Solubilized; c Ristales Product N - (PHOSPHONOMETHYL glycine) of the product to give a Slurry CakeWet The Product N - (PHOSPHONOMETHYL glycine) and an aqueous Stream with lower Solid content that includes Waters mothers; and contacting at least a portion of the aqueous Stream with lower Solid content with a noble metal adsorption to separate at least a Portion of the noble metal from the flow of water with lower soluble Solids content and produceA flow of water treated with lower Solid content with a Lower concentration of noble metal and a noble metal adsorption Medium comprising noble metal.