Environmental concern on biochar: capture, then what?

Biochar is receiving increasing attention as soil amendment. A booming expansion is expected to sharply increase the amount of biochar usage around the world. When we are on the way to change the environment by adding biochar into soil, it is worthwhile to evaluate comprehensively environmental considerations before making excessive use of it in soil. Biochar in soil can effectively retain a wide range of toxic substances through sorption and …