Enhancement of Bio-Hydrogen Production from Waste Activated Sludge by Carbohydrate Substrate Addition and Ph Adjusting

Yu Xiao Zhao; Min Tian Gao; Hui Mu

doi:10.4028/www.scientific.net/AMR.1010-1012.48

Paper Titles

Diversity of Culturable Hydrocarbons-Degrading Bacteria in Petroleum-Contaminated Saltern
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Effect of Environment on Yield and Quality of Rice Recombinant Inbred Lines
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Effects of Water Stresses on the Photosynthetic Characteristics of Hemarthria Compressa
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Efficient Production of Laccase from Armillariella tabescens by Solid State Fermentation
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Enhancement of Bio-Hydrogen Production from Waste Activated Sludge by Carbohydrate Substrate Addition and Ph Adjusting
p.48

Influences of TiO₂ Nanoparticles on the Transport of Hydrophobic Organic Contaminant in Soil
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Optimization of Fermentation Medium and Culture Conditions of Hydrocarbon-Degrading Bacterium Brevibacillus panacihumi W25
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Solubilization of Radionuclide ²³⁸U and ¹³⁷Cs in Contaminated Soil with Acidithiobacillus thiooxidans
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Study on the Taqman Real-Time PCR to the Detection and Quantification of Rhizoctonia solani AG-3 of Tobacco Target Spot
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Enhancement of Bio-Hydrogen Production from Waste Activated Sludge by Carbohydrate Substrate Addition and Ph Adjusting

Abstract:

The effects of carbohydrate/nitrogen ratio (C/N) and pH on hydrogen production from waste activated sludge (WAS) were investigated. Firstly, the optimal pH value for hydrogen production was influenced by the C/N ratio, which was pH 10, 9, 8, 8, 8, 6, and 5, at the C/N ratio of 7 (sole sludge), 10, 15, 20, 25, 30 and 40, respectively. The maximal hydrogen production (100.6 mL/g-COD) was achieved at C/N of 25 and pH 8, which was due to the synergistic effect of carbohydrate addition on hydrogen pro-duction, the enhancement of sludge protein degradation and protease and amylase activities, and the suitable fermentation pathway for hydrogen production.