Jaruwan WongthanatePanupong TermyuanMahidol University2018-11-232018-11-232015-01-01Journal of Environmental Science and Technology. Vol.8, No.4 (2015), 162-171199478872-s2.0-84937418048https://repository.li.mahidol.ac.th/handle/123456789/36004© 2015 Asian Network for Scientific Information. Maximum cumulative hydrogen production of the rice noodle processing wastewater (552.29 mL H<inf>2</inf>/L wastewater) was observed at initial pH 6.0 under thermophilic condition (55±1ºC). Regarding 5% (v/v) addition of Hydrophobic Media (HB), the maximum cumulative hydrogen production using immobilizing ball-shaped HB (1,256.50 mL H<inf>2</inf>/L wastewater) was a three-fold increase of cumulative hydrogen production when compared to its production using immobilizing wheel-shaped HB (424.31 mL H<inf>2</inf>/L wastewater). The SEM observation of immobilized biofilm on a ball-shaped HB was the rod shape and gathered into groups.Mahidol UniversityEnvironmental ScienceArticleSCOPUS10.3923/jest.2015.162.171