title: Alkaline Pretreatment of Sugarcane Bagasse and Filter Mud Codigested to Improve Biomethane Production.
abstract: To enhance the codigestion of degradation and improve biomethane production potential, sugarcane bagasse and filter mud were pretreated by sodium hydroxide NaOH 1 N at 100°C for 15, 30, and 45 minutes, respectively. Biomethane generation from 1-liter batch reactor was studied at mesophilic temperature (37 ± 1)°C, solid concentrations of 6%, and five levels of mixing proportion with and without pretreatment. The results demonstrate that codigestion of filter mud with bagasse produces more biomethane than fermentation of filter mud as single substrate; even codigested substrate composition presented a better balance of nutrients (C/N ratio of 24.70) when codigestion ratio between filter mud and bagasse was 25 : 75 in comparison to filter mud as single substrate (C/N ratio 9.68). All the pretreatments tested led to solubilization of the organic matter, with a maximum lignin reduction of 86.27% and cumulative yield of biomethane (195.8 mL·gVS-1, digestion of pretreated bagasse as single substrate) obtained after 45 minutes of cooking by NaOH 1 N at 100°C. Under this pretreatment condition, significant increase in cumulative methane yield was observed (126.2 mL·gVS-1) at codigestion ratio of 25 : 75 between filter mud and bagasse by increase of 81.20% from untreated composition.
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China.
authors.forename: Zahir
authors.identifier: 0000-0002-7047-2391
authors.initials: Z
authors.lastname: Talha
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China.
authors.forename: Weimin
authors.identifier: 0000-0002-6528-7132
authors.initials: W
authors.lastname: Ding
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China.
authors.forename: Esmaeil
authors.initials: E
authors.lastname: Mehryar
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China.
authors.forename: Muhammad
authors.identifier: 0000-0002-4273-6863
authors.initials: M
authors.lastname: Hassan
authors.affiliation: Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Science, Nanjing, Jiangsu 210014, China.
authors.forename: Jinhua
authors.initials: J
authors.lastname: Bi
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors; D002482:Cellulose / Q000737:chemistry*; D005285:Fermentation / Q000502:physiology; D005502:Food; D008031:Lignin / Q000737:chemistry; D008697:Methane / Q000737:chemistry*; D031786:Saccharum / Q000737:chemistry*; D012972:Sodium Hydroxide / Q000737:chemistry; D012995:Solubility; D013696:Temperature
chemical_list: D012972:Sodium Hydroxide; D002482:Cellulose; D008031:Lignin; C027433:bagasse; D008697:Methane