Co-pyrolysis of sewage sludge and sawdust/rice straw for the production of biochar

Sewage sludge (SS) has been proved to be a good feedstock material for the production of biochars. However, the problem is that the total/leachable contents of some heavy metal elements in biochar products exceed the corresponding norms. In this work, efforts were made to solve above the mentioned topic through the addition of other biomasses (rice straw (RS) and sawdust (SD)) for the co-pyrolysis with SS. The addition of RS/SD reduced the yield...