Enhancement of biogas production from sewage sludge by addition of grease trap sludge

It was found that the increase of grease trap sludge in the feedstock had a direct impact on the biogas production and methane yield. This proposal has also been confirmed by statistical analysis such as Pearson correlation coefficients and one factor ANOVA. While the long chain fatty acids reduction is not correlated with the gradual increase of fat rich material in the feedstock. The results of the present laboratory study revealed the use of grease trap sludge as a co-substrate is an interesting method for intensification of methane production from sewage sludge.