Figure 4. Methane (▲) production and oxygen (■) consumption in the presence of 0 and 10 IHOP, and with or without MO1(○), with granular sludge-I plus ethanol as co-substrate (IHOP = initial headspace oxygen percentage)

From

Azo Dye Reduction by Methanogenic Granular Sludge Exposed to Oxygen

Maulin P Shah

International Journal of Environmental Bioremediation & Biodegradation. 2014, 2(1), 18-24 doi:10.12691/ijebb-2-1-4