PETR 99 |
| To produce hydrogen from waste activated sludge (WS) by anaerobic microorganisms, WS should be treated. In this study, the effect of pre-treatment of waste activated sludge on hydrogen yield was examined. The pre-treatment includes the treatment with acid, alkali, grind, heat, ozone, electrolysis, ultrasound, and its combined method. After pre-treatment, organic matters of WAS were soluble and soluble chemical oxygen demand (sCOD) was increased by 15 times. Higher sCOD gave higher hydrogen yield. Batch experiments were conducted to investigate the effects of biomass concentration, hydrogen partial pressure, and buffer solution on hydrogen production from WAS by using heated anaerobic mixed cultures. Experimental results showed that addition of buffer solution, higher biomass concentration, and gas sparging condition markedly increased the hydrogen yield to 2.7g/kg dried solids. |
|
Symposium on Clean Fuels from Biomass
1:30 PM-5:15 PM, Tuesday, 12 September 2006 Palace -- Twin Peaks North, Oral
Division of Petroleum Chemistry |