Hierarchical porous activated biochar derived from marine macroalgae wastes (): facile synthesis and its application on Methylene Blue removal.

Biochar is one of the most promising candidates of the cost-effective adsorbent for wastewater treatment. Herein, a novel hierarchical porous activated biochar derived from (EPAC) was synthesized an oily sludge-assisted "one-step" carbonization and activation approach. The results proved that the oily sludge additive acts as a natural structure directing agent during the EPAC preparation.