Impact of Supplemental Hydrogen on Biogas Enhancement and Substrate Removal Efficiency in a Two-Stage Expanded Granular Sludge Bed Reactor
作者： Mahyar Ghorbanian , Robert M. Lupitskyy , Jagannadh V. Satyavolu , R. Eric Berson
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摘要: Abstract In two-stage anaerobic expanded granular sludge bed (EGSB) reactors, up to one-third of the chemical oxygen demand (COD) content is naturally preacidified in a first stage preacidification (PA) tank and then fed second digester for conversion methane. Hydrogen, an intermediate product stage, could be theoretically captured escaping from PA sent biologically convert carbon dioxide methane biogas enhancement. Pilot-scale tests were conducted assess impact introducing hydrogen gas on quality enhancement substrate removal efficiency EGSB with distillery wastewater at mesophilic temperature (35°C). The amount introduced, 0.15 or 0.30 L/(Lbiogas·day), was less than what tank. Biogas enhanced by ∼10% 20% energy yield increased ∼33–42% depending injection rate. COD remaine...
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