| abstract |
A method of recovering a fluorochemical emulsifying agent with a lamellar composite hydroxide from a wastewater resulting from polymerization for fluoropolymer production and containing the fluorochemical emulsifying agent, which comprises yielding a lamellar composite hydroxide containing the fluorochemical emulsifying agent trapped between sheets thereof, separating the lamellar composite hydroxide from the coagulation wastewater, dissolving the hydroxide in a mineral acid, and extracting the fluorochemical emulsifying agent from the solution with a fluorinated hydrocarbon. The fluorochemical emulsifying agent can be economically recovered through a simple procedure. |