. <0000-0003-3360-3636> . . . "Techno-economic analysis"@en . "Biogas utilization"@en . "Biogas purification"@en . "Biomethane"@en . "Bio-oil"@en . "Biogas upgrading technologies"@en . "Biogas upgradation challenges"@en . "Bio-oil upgrading"@en . . "Pyrolysis"@en . "Shams Forruque Ahmed" . "Ahmed" . "Biomass"@en . "Microalgae"@en . "Shams" . . "Bio-oil production"@en .