A method for the preparation of magnetic porous iron-doped biochar and its application in treating refractory pharmaceutical wastewater

Abstract

This invention provides a method for the preparation of magnetic porous iron-doped biochar and its application in treating refractory pharmaceutical wastewater. The steps of this method are as follows: co-precipitation reaction of vinasse, oxalic acid, ferrous sulfate, and water to obtain ferrous oxalate-modified vinasse precursor; sintering the precursor under a protective atmosphere. In this invention, ferrous oxalate-modified are used, and the catalytic effect of magnetic porous iron-doped biochar prepared in one-step calcination is better than that of materials prepared by iron salt impregnation method.