title: Methane enhancement through oxidative cleavage and alkali solubilization pre-treatments for corn stover with anaerobic activated sludge.
abstract: In the present study, thermo-chemical pre-treatment was adopted to evaluate methane production potential from corn stover by co-digesting it with anaerobic activated sludge. Three chemicals H2O2, Ca(OH)2 and NaOH were selected with two levels of concentration. All thermo-chemical pre-treatments were found significant (P<0.05) to enhance lignocellulosic digestibility and methane production. The results indicated that the methane yield by H2O2-1, H2O2-2, and NaOH-2 treated corn stover were 293.52, 310.50 and 279.42ml/g.VS which were 57.18%, 66.27% and 49.63% higher than the untreated corn stover respectively. In the previous studies pre-treatment time was reported in days but our method had reduced it to about one hour. H2O2-2 and NaOH-2 treatments remained prominent to increase lignocellulosic degradation vigorously up to 45% and 42% respectively. Process biochemistry during the anaerobic digestion process was taken into consideration to optimize the most feasible thermo-chemical pre-treatment for corn stover.
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Hassan
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu 210031, China. Electronic address: wmding@njau.edu.cn.
authors.forename: Weimin
authors.initials: W
authors.lastname: Ding
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
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: Zahir Ahmed Ali
authors.initials: ZA
authors.lastname: Talha
authors.affiliation: Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Science, Nanjing, Jiangsu 210014, China.
authors.forename: Hongying
authors.initials: H
authors.lastname: Huang
mesh_terms: D000438:Alcohols / Q000737:chemistry; D000468:Alkalies / Q000737:chemistry*; D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D005232:Fatty Acids, Volatile / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008031:Lignin / Q000737:chemistry; D008697:Methane / Q000096:biosynthesis*; D011134:Polysaccharides / Q000737:chemistry; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage; D003313:Zea mays / Q000737:chemistry*
chemical_list: D000438:Alcohols; D000468:Alkalies; D005232:Fatty Acids, Volatile; D011134:Polysaccharides; D012722:Sewage; C036909:lignocellulose; C007916:hemicellulose; D008031:Lignin; D006861:Hydrogen Peroxide; D008697:Methane
keywords: Anaerobic digestibility of lignocellulosic biomass; Methane enhancement; Thermo-chemical pre-treatment