Increase of biogas production through co-digestion of lipids and sewage sludge by Noutsopoulos C., Mamais D., Antoniou K. and Avramides C.
Anaerobic treatment of sewage sludge and grease trap sludge in continuous co-digestion by Neczaj E., Bien J., Grosser A., Worwag G. and Kacprzak M.
The application of ferrate for sewage treatment: pilot- to full-scale trials by Jiang J-Q., Stanford C. and Mollazeinal A.