Dear Khaoula Bouzidi

You may use the acids like Nitric acid, sulphuric acid. If not possible then use isopropanol or dichloromethane

Hi Khaula,

Furan resin is polymer of furan, you can remove it through it is hydrolysis reaction using mild acidic solution.Good Luck.

Hi

try with n-butanol , acetic acid , formic acid