Optimization and characterization of bio-oil produced by microwave assisted pyrolysis of oil palm shell waste biomass with microwave absorber - Mushtaq, Faisal; Abdullah, Tuan Amran Tuan; Mat, Ramli; Ani, Far, Mushtaq, Faisal; Abdullah, Tuan Amran Tuan; Mat, Ramli; Ani, Far (2015)