| 摘要 |
PCT No. PCT/GB96/01548 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Jun. 27, 1996 PCT Pub. No. WO97/05149 PCT Pub. Date Feb. 13, 1997A process for removing N-(phosphonomethylglycine) (glyphosate) or a salt or ionic form thereof from an aqueous mixture in which it is present, wherein the aqueous mixture is an effluent from a glyphosate manufacturing process, the process comprising adding to the mixture of ions capable of forming an insoluble or partially soluble complex glyphosate salt, and removing the complex salt from the mixture. An additional process permits recovery of glyphosate from the precipitate of complex salts by a process comprising forming an aqueous slurry of the precipitate having a pH greater than 8 and removing the resultant metal oxide from the slurry to give an aqueous solution containing glyphosate. |
