Sludge can be obtained from the organic matter and can be used as bio-fertilisers

You shall first estimate the bio-degradable carbon in your sludge that shall help in determining the methane emission after bio-degradation. The an-aerobic digestion will help you to produce energy (biogas) as well as stabilize your bio-fertilizer. Since sludge contain a lot of pathogens which must be used as bio-fertilizer after suitable treatment. For biogas potential estimation you may go for empirical models as well as for theoretical estimation while for stabilization of sludge you first look for standards of sludge disposal in your country. Then you go for literature survey for your specific requirement

There are a lot of papers dealing with anaerobic digestion of sewage sludge, this is probably the most well known option to recover energy from sludge.

you may want to check some of them among many others:

Parkin, G. and Owen, W. (1986). ”Fundamentals of Anaerobic Digestion of Wastewater Sludges.” J. Environ. Eng., 112(5), 867–920.

Increasing biogas production by thermal (70 °C) sludge pre-treatment prior to thermophilic anaerobic digestion (2008). Ivet Ferrera, Sergio Ponsá, Felícitas Vázquezc, Xavier Font. Biochemical Engineering Journal 42, 186-192

Anaerobic digestion of organic solid wastes. An overview of research achievements and perspectives (2000). J Mata-Alvarez, S Macé, P Llabrés. Bioresource Technology 74, 3-16

Hi there,

this may help you out :-)

Ganesh

And one more

Dear Bin,

You may find our recently published article on converting wastewater into hydrogen energy through advanced MEC systems.

https://www.researchgate.net/publication/309883189_Microbial_electrolysis_cells_for_hydrogen_production_and_urban_wastewater_treatment_A_case_study_of_Saudi_Arabia?ev=prf_pub

All the best

Rehan

Article Microbial electrolysis cells for hydrogen production and urb...