The biochar were produced by pennisetum hydridum and the physico-chemical properties of biochar were characterized by scanning electron microscope, infrared spectroscopy analysis, elemental analyzer and X-ray diffraction, and the adsorption properties of biochar for the removal of sulfonamides from aqueous solution was evaluated. The results showed that the adsorption-removal rate of sulfonamides were affected by biochar addition amount,adsorption time, initial concentration of sulfonamides and p H value of...