A method for processing an organic solvent recycled from a waste organic solvent is provided to improve manufacturing yield by effectively removing sulfate in a recycled organic solvent using basic alumina. A method for processing an organic solvent recycled from a waste organic solvent comprises the following steps. An organic solvent recycled from a waste organic solvent is contacted to basic alumina. Sulfate included in the recycled organic solvent is removed. The PH of 5% of alumina solution is from 8 to 12 at 25°C. The residue sulfate of the sulfate removed organic solvent is less than 0.2ppm.
展开▼
