<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Sugarcane bagasse as a co-substrate with oil-refinery biological sludge for biogas production using batch mesophilic anaerobic co-digestion technology: Effect of carbon/nitrogen ratio"^^ . "Man-made organic waste leads to the rapid proliferation of pollution around the globe. Effective bio-waste management can help to reduce the adverse effects of organic waste while contributing to the circular economy at the same time. The toxic oily-biological sludge generated from oil refineries� wastewater treatment plants is a potential source for biogas energy recovery via anaerobic digestion. However, the oily-biological sludge�s carbon/nitrogen (C/N) ratio is lower than the ideal 20-30 ratio required by anaerobic digestion technology for biogas production. Sugarcane bagasse can be digested as a high C/N co-substrate while the oily-biological sludge acts as a substrate and inoculum to improve biogas production. In this study, the best C/N with co-substrate volatile solids (VS)/inoculum VS ratios for the co-digestion process of mixtures were determined empirically through batch experiments at temperatures of 35-37 °C, pH (6-8) and 60 rpm mixing. The raw materials were pre-treated mechanically and thermo-chemically to further enhance the digestibility. The best condition for the sugarcane bagasse delignification process was 1 (w/v) sodium hydroxide, 1:10 solid-liquid ratio, at 100 °C, and 150 rpm for 1 h. The results from a 33-day batch anaerobic digestion experiment indicate that the production of biogas and methane yield were concurrent with the increasing C/N and co-substrate VS/inoculum VS ratios. The total biogas yields from C/N 20.0 with co-substrate VS/inoculum VS 0.06 and C/N 30.0 with co-substrate VS/inoculum VS 0.18 ratios were 2777.0 and 9268.0 mL, respectively, including a methane yield of 980.0 and 3009.3 mL, respectively. The biogas and methane yield from C/N 30.0 were higher than the biogas and methane yields from C/N 20.0 by 70.04 and 67.44, respectively. The highest biogas and methane yields corresponded with the highest C/N with co-substrate VS/inoculum VS ratios (30.0 and 0.18), being 200.6 mL/g VSremoved and 65.1 mL CH4/g VSremoved, respectively. © 2021 by the authors. Licensee MDPI, Basel, Switzerland."^^ . "2021" . . "13" . "5" . . "MDPI AG"^^ . . . "Water (Switzerland)"^^ . . . "20734441" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "A.A.H."^^ . "Saeed"^^ . "A.A.H. Saeed"^^ . . "B.N."^^ . "Saleh Al-dhawi"^^ . "B.N. Saleh Al-dhawi"^^ . . "N.M.Y."^^ . "Almahbashi"^^ . "N.M.Y. Almahbashi"^^ . . "A.H."^^ . "Jagaba"^^ . "A.H. Jagaba"^^ . . "V."^^ . "Kumar"^^ . "V. Kumar"^^ . . "G.H.A."^^ . "Salih"^^ . "G.H.A. Salih"^^ . . "A."^^ . "Noor"^^ . "A. Noor"^^ . . "S.R.M."^^ . "Kutty"^^ . "S.R.M. Kutty"^^ . . "A.A.S."^^ . "Ghaleb"^^ . "A.A.S. Ghaleb"^^ . . . . . "HTML Summary of #15131 \n\nSugarcane bagasse as a co-substrate with oil-refinery biological sludge for biogas production using batch mesophilic anaerobic co-digestion technology: Effect of carbon/nitrogen ratio\n\n" . "text/html" . .