Published 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. 141-148_851_NRG_02_Neczaj_14-2.pdf
Published Development of a biofilter media for removal of hydrogen sulphide by Shareefdeen Z.Μ. 218-222_583_Shareefdeen_paper.pdf