Production of bio-fertilizer from microwave vacuum pyrolysis of waste palm shell for cultivation of oyster mushroom (Pleurotus ostreatus)Wai Lun Nam, Man Huan Su, Xue Yee Phang, Min Yee Chong, Rock Keey Liew, Nyuk Ling Ma and Su Shiung LamE3S Web Conf., 22 (2017) 00122DOI: https://doi.org/10.1051/e3sconf/20172200122