Effect of bacterial lipase on anaerobic co-digestion of slaughterhouse wastewater and grease in batch condition and continuous fixed-bed reactor
Copyright policy )Effect of bacterial lipase on anaerobic co-digestion of slaughterhouse wastewater and grease in batch condition and continuous fixed-bed reactor
This study aimed to investigate the effects of bacterial lipase on biogas production of anaerobic co-digestion of slaughterhouse wastewater (SHWW) and hydrolyzed grease (HG). A neutrophilic Staphylococcus xylosus strain exhibiting lipolytic activity was used to perform microbial hydrolysis pretreatment of poultry slaughterhouse lipid rich waste.Optimum proportion of hydrolyzed grease was evaluated by determining biochemical methane potential. A high biogas production was observed in batch containing a mixture of slaughterhouse composed of 75% SHWW and 25% hydrolyzed grease leading to a biogas yield of 0.6 L/g COD introduced. Fixed bed reactor (FBR) results confirmed that the proportion of 25% of hydrolyzed grease gives the optimum condition for the digester performance. Biogas production was significantly high until an organic loading rate (OLR) of 2 g COD/L. d.This study indicates that the use of biological pre-treatment and FBR for the co-digestion of SHWW and hydrolyzed grease is feasible and effective.
- Centre of Biotechnology of Sfax Tunisia
RC620-627, Hydrolyzed grease, Staphylococcus, Wastewater, Fixed bed reactor, Poultry, Fats, Bioreactors, Bacterial Proteins, Animals, Humans, Nutritional diseases. Deficiency diseases, Research, Hydrolysis, Biogas yield, Lipase, Pre-treatment, Kinetics, Anaerobic co-digestion, Biofuels, Fermentation, Abattoirs, Slaughterhouse wastewater
RC620-627, Hydrolyzed grease, Staphylococcus, Wastewater, Fixed bed reactor, Poultry, Fats, Bioreactors, Bacterial Proteins, Animals, Humans, Nutritional diseases. Deficiency diseases, Research, Hydrolysis, Biogas yield, Lipase, Pre-treatment, Kinetics, Anaerobic co-digestion, Biofuels, Fermentation, Abattoirs, Slaughterhouse wastewater
