title: Contribution of acetic acid to the hydrolysis of lignocellulosic biomass under abiotic conditions.
abstract: Acetic acid was used in abiotic experiments to adjust the solution pH and investigate its influence on the chemical hydrolysis of the Organic Fraction of Municipal Solid Waste (OFMSW). Soluble chemical oxygen demand (SCOD) was used to measure the hydrolysis under oxidative conditions (positive oxidation-reduction potential values), and pH 4 allowed for 20% (±2%) of the COD added to be solubilized, whereas only 12% (±1%) was solubilized at pH7. Under reducing conditions (negative oxidation-reduction potential values) and pH 4, 32.3% (±3%) of the OFMSW was solubilized which shows that acidogenesis at pH 4 during the anaerobic digestion of solid waste can result in chemical hydrolysis. In comparison, bacterial hydrolysis resulted in 54% (±6%) solubilization.
authors: Department of Chemical Engineering and Chemical Technology, Imperial College of Science and Technology and Medicine, Prince Consort Road, London SW7 2BY, UK. Electronic address: antoinetrzcinski@hotmail.com.
authors: Antoine P
authors: AP
authors: Trzcinski
authors: Department of Chemical Engineering and Chemical Technology, Imperial College of Science and Technology and Medicine, Prince Consort Road, London SW7 2BY, UK.
authors: David C
authors: DC
authors: Stuckey
mesh_terms: D019342:Acetic Acid / Q000737:chemistry*; D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods; D002625:Chemistry, Organic; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D012722:Sewage / Q000382:microbiology; D062611:Solid Waste / Q000032:analysis; D012995:Solubility
chemical_list: D012722:Sewage; D062611:Solid Waste; C036909:lignocellulose; D008031:Lignin; D019342:Acetic Acid; D010100:Oxygen
keywords: Chemical hydrolysis; Lignocellulosic biomass; Organic fraction of municipal solid waste; Pre-treatment