title: Microwave-assisted direct liquefaction of Ulva prolifera for bio-oil production by acid catalysis.
abstract: Production of bio-oil by microwave-assisted direct liquefaction (MADL) of Ulva prolifera was investigated, and the bio-oil was analyzed by elementary analysis, Fourier transform infrared spectroscopic analysis (FT-IR), and gas chromatography-mass spectrometry (GC-MS). The results indicate that the liquefaction yield is influenced by the microwave power, liquefaction temperature, liquefaction time, catalyst content, solvent-to-feedstock ratio and moisture content. The maximum liquefaction yield of U. prolifera (moisture content of 8%) was 84.81%, which was obtained under microwave power of 600 W for 30 min at 180 °C with solvent-to-feedstock ratio of 16:1 and 6% H(2)SO(4). The bio-oil was composed of benzenecarboxylic acid, diethyl phthalate, long-chain fatty acids (C(13) to C(18)), fatty acid methyl esters and water. The results suggest that U. prolifera is a viable eco-friendly, green feedstock substitute for biofuels and chemicals production.
authors.affiliation: Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
authors.forename: Yingbin
authors.initials: Y
authors.lastname: Zhuang
authors.forename: Jingxue
authors.initials: J
authors.lastname: Guo
authors.forename: Limei
authors.initials: L
authors.lastname: Chen
authors.forename: Demao
authors.initials: D
authors.lastname: Li
authors.forename: Junhai
authors.initials: J
authors.lastname: Liu
authors.forename: Naihao
authors.initials: N
authors.lastname: Ye
mesh_terms: D000143:Acids / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002384:Catalysis; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D006813:Humidity; D008872:Microwaves; D010938:Plant Oils / Q000138:chemical synthesis*; D012997:Solvents / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D044445:Ulva / Q000737:chemistry*
chemical_list: D000143:Acids; D056804:Biofuels; D010938:Plant Oils; D012997:Solvents