A green method for production of nanobiochar by ball milling ...
WEBOct 15, 2017 · Among these factors, the machine setup including type, size, and material of jar and balls were fixed and all the experiments were performed at room temperature. Ball milling was performed in a planetary ball mill (PM100; Retsch Corporation) using a 500 mL stainless steel jar and stainless steel balls of mm in size.