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
| Autor: | Vicky Kumar, N.M.Y. Almahbashi, Ahmad Hussaini Jagaba, B.N.S. Al-dhawi, Anwar Ameen Hezam Saeed, Shamsul Rahman Mohamed Kutty, A.A.S. Ghaleb, Azmatullah Noor, Gasim Hayder Ahmed Salih |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
oily-biological sludge
lcsh:Hydraulic engineering 020209 energy Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science Raw material 01 natural sciences Biochemistry biomethane Methane chemistry.chemical_compound lcsh:Water supply for domestic and industrial purposes Biogas lcsh:TC1-978 0202 electrical engineering electronic engineering information engineering biogas 0105 earth and related environmental sciences Water Science and Technology anaerobic co-digestion lcsh:TD201-500 Biodegradable waste Pulp and paper industry sugarcane bagasse Anaerobic digestion chemistry hazard waste management Sewage treatment Bagasse Mesophile |
| Zdroj: | Water, Vol 13, Iss 590, p 590 (2021) Water Volume 13 Issue 5 |
| ISSN: | 2073-4441 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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