High-Efficiency Separation of Bio-Oil

Metal oxide-catalyzed hydrothermal liquefaction of Malaysian oil palm biomass to bio-oil under supercritical condition

“…Carboxylic acid was detected due to the presence of palmitic acid in EFB fibres before supercritical hydrothermal liquefaction process. Excessive amount of oxygenated compounds in bio-oil cause instability, low heating and high corrosiveness especially in the presence of high amount of carboxylic acid [20]. High acid content in bio-oil can be a disadvantage to combustion component such as corrodes mechanical components of gas turbine and pipeline.…”

“…The generation of bio-oil based on mechanisms such as biomass depolymerisation, cleavage of C C bond in biomass structure, dehydration, decarboxylation, deamination and finally the recombination of reactive fragments [7]. Liquefaction requires lower operating temperature (approximately 250-400 • C) and higher pressure (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) MPa) compared to pyrolysis (temperature at 500-800 • C) [6]. Therefore, it is expected that the energy consumption of liquefaction should be lower compared to pyrolysis.…”

Effect of combined slow pyrolysis and steam gasification of sugarcane bagasse on hydrogen generation

“…Hence, it is essential to upgrade bio-oil to improve its quality. Currently three conventional technologies such as solvent extraction, column chromatography, and distillation are employed for bio-oil separation [12]. Among them, distillation is the most common and conventional method followed in chemical industry for the separation phenomenon.…”

Extraction of Phenol from Bio-oil Produced by Pyrolysis of Coconut Shell

“…2 The largest component of bio-oil is lignin derivatives, namely phenol, alcohol, organic acids and carbonyl compounds such as ketones, aldehydes and esters. 3 Phenol compounds are acidic compounds, therefore the use of this bio-oil will directly cause corrosion on the machine. 4 Phenol needs to be taken from bio-oil to reduce the corrosiveness of bio-oil.…”