Co-gasification of Corn and Coconut Residues in Downdraft Gasifier Norazilah Tamili, Lee Kean Chuan, Shaharin A. Sulaiman, Mohamad Nazmi Z. Moni, Muddasser Inayat and Michael Yin Kai Lo MATEC Web Conf., 225 (2018) 04001 Published online: 05 November 2018 DOI: 10.1051/matecconf/201822504001