Microbial fuel cells (MFC) are bioelectrochemical systems designed to convert the chemical energy contained in organic matter into electrical energy utilizing catalytic (metabolic) activity of microorganisms. The fabrication of novel carbon materials as anodes to generate power without the utilization of noble metals is a hot-spot in the research of MFC. In the present work, silver grass (Miscanthus sinensis) has been used as an anode material for achieving higher power density and to remove heavy metals (Cr, Co and Cu) from contaminated wastewater through microbial fuel cell. The biomass carbon powder obtained from silver grass exhibited high specific area (2700 m2 g-1) with excellent porous structure which facilitates the growth of bacteria (E. Coli) during the MFC operation and resulted in delivering high power output with the decontamination of contaminated waste water by removing the heavy metals.