Method for removal of guanidine compound from aqueous media
AssigneeSabic Innovative Plastics IP B.V.
InventorsDavid Bruce Hall, Thomas Link Guggenheim, James Manio Silva, Farid Fouad Khouri, Matthew Hal Littlejohn, Balakrishnan Ganesan, Ashok Shankrappa Shyadligeri, Pradeep Jeevaji Nadkarni
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for removing a neutral or an ionic guanidine compound from aqueous media optionally comprising an alkali metal halide, wherein the method is selected from the group consisting of (a) adsorption onto a carbonaceous adsorbent, (b) adsorption onto a clay adsorbent, (c) filtration through a nanofiltration membrane, and (d) removal of water and calcination.
Claims14
A method for removing a neutral or an ionic guanidine compound from aqueous media comprising less than 4 wt. % of an alkali metal halide, wherein the method consists of filtration through a nanofiltration membrane
- wherein the nanofiltration membrane has a molecular weight cut-off sufficient to retain from about 70% to about 100% of the guanidine compound.
Dependencies are inferred from the claim text.