Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Abstract

Bio‐oil from lignocellulosic biomass pyrolysis is a promising feedstock as a precursor for the production of transportation fuels and value‐added chemicals. The presence of significant concentrations of oxygen, water, and acids makes it difficult to use bio‐oil directly as a transportation fuel without costly upgrading. The acidity of pyrolysis liquids is mainly derived from volatile acids, such as acetic acid, causing chemical instability and corrosion. The extraction of acids from bio‐oil can therefore offer strategies for improved applications and economic value. Moreover, acetic acid is a valuable reagent and the building block for several commercially important chemicals. This review presents the results of important research related to the production of bio‐oil‐derived acetic acid. The discussion is intended to summarize the effect of biomass type and pretreatment method, pyrolysis processing conditions, and separation techniques on acetic acid production via pyrolysis. On this basis, acetic acid characterization techniques are also presented along with an overview of acetic acid applications and economic considerations. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

Bio-Oil: The Next-Generation Source of Chemicals

“…Acetic acid, propanoic acid, levulinic acid, and fatty acids are acids that are commonly present in the highest proportions in bio-oil [127,128]. The recuperation of acetic acid from bio-oil is described by some as a viable approach to bio-oil valorization besides fuel [130], as is the case for glycolic and formic acids [131].…”

Operationally simple electrochemical method for the conversion of acetone into high-specification jet fuel

“…25,26 The acetic acid feed can be sourced by a range of sustainable technologies, including biogas processing, 27 aerobic fermentation of sugars, 28 or biomass pyrolysis (including hydrothermal methods) which generates acetic acid as a sizeable constituent of bio-oil. 29…”

“…25,26 The acetic acid feed can be sourced by a range of sustainable technologies, including biogas processing, 27 aerobic fermentation of sugars, 28 or biomass pyrolysis (including hydrothermal methods) which generates acetic acid as a sizeable constituent of bio-oil. 29 Finally, most of the acetone now produced industrially is as a byproduct of the oxidation of the petrochemical cumene to phenol. This same chemistry can also be performed on p-cymene, which yields p-cresol and acetone, 30 where the cymene can be sustainably derived from a-pinene, limonene, and other terpenes.…”

Sustainable Plant Growth Promotion and Chemical Composition of Pyroligneous Acid When Applied with Biochar as a Soil Amendment

“…It is also important to characterize exact chemical composition as PA is often assumed to be a biodegradable material [ 19 ], with little concern for environmental effects following application. Spectroscopic techniques may be used for better characterization of PA chemical composition and effects on plant growth [ 20 ].…”

“…This work reports on the effect of combined applications of chemical fertilizer, biochar, and PA on plant growth in a pot experiment (treatments described in Table 1 ). To characterize chemical profiles of the organic inputs, four spectroscopic measurements of fluorescence excitation were utilized—excitation-emission matrix (EEM) [ 5 , 10 ], ion chromatography [ 26 ], high-performance liquid chromatography (HPLC) [ 20 ], and gas chromatography-mass spectrometry (GC-MS) [ 8 , 26 , 27 ]. The effect of inputs on growth of Komatsuna plants ( Brassica rapa var.…”