Characterization of Fast Pyrolysis Bio-Oil from Hardwood and Softwood Lignin

Zadeh, Zahra Echresh; Abdulkhani, Ali; Saha, Basudeb

doi:10.3390/en13040887

Cited by 16 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This technique shows the monomers released during a thermal decomposition process that cleavages the lignin bonds (such as the β ‐aryl‐alkyl ether) and allows different structural features to be distinguished, and thereby allows the lignin structure to be fingerprinted . Finally, this information could be used as an indicator of the chemical changes occurring as a consequence of the enzymatic catalysis in the lignin …”

Section: Resultsmentioning

confidence: 99%

Fast methods for the identification of suitable chemo‐enzymatic treatments of Kraft lignin to obtain aromatic compounds

Herrera

Bodi‐Paul

Gordobil

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

Kraft lignin valorization is the cornerstone for the establishment of biorefineries based on residual fractions from the pulping processes. From the precipitation process to depolymerization, various strategies have emerged, all focused on obtaining high yields or higher purity monomers. The strategy used in this study was to modify the structure of the precipitated Kraft lignin with different oxidative enzymatic treatments, with the purpose of facilitating subsequent catalytic depolymerization. The treatments were performed with different concentrations of lacasse and mediator, and then lignin structure and chemical composition were analyzed to find the optimal treatment for depolymerization. Chemometric methods based on infrared signals were used as fast tools to reduce the complexity of the chemical information generated from lignin characterization, and were therefore used to distinguish the most appropriate chemoenzymatic treatment. The results of the chemical catalysis showed higher conversion yields of the Kraft lignin after the enzymatic process than after using only chemical catalysis. The primary compounds obtained were catechol and its derivatives, thus validating its selection by means of infrared spectroscopy and chemometrics. In conclusion, it was possible to choose a straightforward chemoenzymatic process that improves the conversion of the Kraft lignin to aromatic compounds with the help of non-destructive, low-cost, and fast tools.

show abstract

Section: Resultsmentioning

confidence: 99%

Fast methods for the identification of suitable chemo‐enzymatic treatments of Kraft lignin to obtain aromatic compounds

Herrera

Bodi‐Paul

Gordobil

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

show abstract

“…Lignin, the most abundant aromatic biopolymer, is produced mainly as a by-product of the pulp and paper industry [3,4]. Black liquor is a complex mixture of depolymerized lignin, polysaccharides, extractives, and pulping chemicals [5,6].…”

Section: Introductionmentioning

confidence: 99%

Valorization of bagasse alkali lignin to water-soluble derivatives through chemical modification

Abdulkhani

Khorasani

Hamzeh

et al. 2022

Biomass Conv. Bioref.

Self Cite

View full text Add to dashboard Cite

Black liquor is the by-product of the pulping process where the lignin, hemicellulose, and extractive materials are separated from wood to produce paper pulp. As one of the primary lignin sources, black liquor is considered an important energy source from biomass to produce biofuels and value-added chemicals. However, soda alkaline lignin has limited industrial applications due to its insolubility in water and lack of reactivity. Therefore, chemical modification is essential to enhance its industrial applications. In this study, alkali lignin from bagasse was modified through sulfonation, sulfomethylation, and amination processes using different reaction conditions. The structural analysis of obtained products was investigated by FTIR and 1 H-NMR. The molecular weight distribution and thermal stability of the watersoluble products were analyzed using gel permeation chromatography (GPC) and thermogravimetric analysis (TGA), respectively. The elemental analysis was used to measure the elements (CHNSO) of the obtained water-soluble derivatives. The chemical structure analysis of the samples with FTIR and 1 HNMR confirmed the modification processes. The results indicate that modification led to increased water solubility and a decrease in the precipitation pH of lignin samples, due to the introduction of sulfonate and amin functunal groups on lignin. In addition, the molecular weight and thermal stability of modified lignins were increased due to the presence of sulfonate and amine groups compared to unmodified lignin.

show abstract

“…Chen et al [17] combined wood wastes with municipal sewage sludge for the production of biochar at 800 °C. Echresh Zadeh et al [18] utilized hardwood and softwood for bio-oil production. The obtained oil through this study was 30.2 wt% and 24.4 wt%.…”

Section: Introductionmentioning

confidence: 99%

Co-pyrolysis of Hardwood Combined with Industrial Pressed Oil Cake and Agricultural Residues for Enhanced Bio-Oil Production

Madhu

Vidhya

Vinodha

et al. 2022

Journal of Chemistry

View full text Add to dashboard Cite

Lignocellulosic biomass is the potential raw material for the production of biofuels through pyrolysis. It is an effective technique for converting biomass to biofuels. However, biofuel from agricultural residues and woody-based feedstocks shows poor fuel properties due to higher oxygen content. Co-pyrolysis is a promising process to produce high-quality bio-oil by two or more different materials. Forestry, industrial, and agricultural outcomes are the ideal co-feedstocks for improved bio-oil quality. In this study, individual and co-pyrolysis of hardwood, pressed mustard oil cake and corncob were conducted at a temperature of 500°C. Before conducting pyrolysis experiments, thermogravimetric analysis was conducted to evaluate thermal degradation behavior. Through individual pyrolysis, corncob yielded a maximum bio-oil of 43.9 wt%. On the other hand co-pyrolysis on binary blends of hardwood and corncob produced maximum bio-oil of 46.2 wt%. Compared to individual pyrolysis, the binary blend produced more bio-oil, suggesting a synergistic effect between hardwood and corncob. The decreased bio-oil yield of 40.1 wt% during co-pyrolysis of ternary blends suggests negative synergistic effects prejudiced by the volatiles available in the biomass mixture. The improved quantitative synergistic results in the co-pyrolysis process give crucial information for the development of feed-flexible, higher bio-oil production and clean operating systems. The characterization studies on bio-oil by Fourier transform-infrared spectroscopy (FTIR), gas chromatography–mass spectrometry (GC-MS), and 1H NMR spectroscopy have shown that the bio-oil is a combination of aliphatic and oxygenated compounds. The analysis of the heating value shows that the bio-oil can be utilized as a fuel for heating applications.

show abstract

Characterization of Fast Pyrolysis Bio-Oil from Hardwood and Softwood Lignin

Cited by 16 publications

References 40 publications

Fast methods for the identification of suitable chemo‐enzymatic treatments of Kraft lignin to obtain aromatic compounds

Fast methods for the identification of suitable chemo‐enzymatic treatments of Kraft lignin to obtain aromatic compounds

Valorization of bagasse alkali lignin to water-soluble derivatives through chemical modification

Co-pyrolysis of Hardwood Combined with Industrial Pressed Oil Cake and Agricultural Residues for Enhanced Bio-Oil Production

Contact Info

Product

Resources

About