Skip to content

Research at St Andrews

Pilot scale recovery of lignin from black liquor and advanced characterization of the final product

Research output: Contribution to journalArticle

Author(s)

Jeroen Lauwaert, Ingeborg Stals, Christopher S. Lancefield, Wesley Deschaumes, Dieter Depuydt, Brecht Vanlerberghe, Tim Devlamynck, Pieter C.A. Bruijnincx, An Verberckmoes

School/Research organisations

Abstract

Recently, the academic and industrial interest in lignin as a renewable resource for many valuable applications has been on the rise. However, the current biomass separation technologies are focused on obtaining high quality cellulose which can be further processed, e.g., in the paper industry, resulting in a lignin of rather low quality. Moreover, lignin recovery from black liquor is often accompanied with filter clogging and a severe flux decline, limiting the cost-efficiency of its valorization. In this work, the pilot scale recovery of lignin from a black liquor derived from a mild soda pulping process of Miscanthus x giganteus chips is studied with the aim to develop a straightforward procedure that yields a high quality final product. A first pilot scale experiment demonstrated the pH to be crucial for optimal precipitation. Moreover, adding an enzyme mixture containing cellulases, hemicellulases and β-glucosidases, clearly enhanced the flocculation and filterability. Thorough characterization of the obtained lignin showed a native-like structure which can be related to the mild pulping conditions and revealed that the p-coumarates and ferulates were converted to the free acids as a result of the base catalyzed hydrolysis as well as the enzymatic cleavage of the ester linkages leading to the complete removal of the hydrophilic (poly)saccharides. Moreover, this resulted in a slightly more hydrophobic lignin material that was more amenable to flocculation. Building on lab scale experiments aimed at optimization of the process conditions, a second pilot scale experiment was performed resulting in improved precipitation and flocculation by means of acidification, an enzymatic treatment as well as the addition of a flocculant. This allowed for smooth filtration and resulted in a high purity of the isolated lignin.

Close

Details

Original languageEnglish
Pages (from-to)226-235
Number of pages10
JournalSeparation and Purification Technology
Volume221
Early online date29 Mar 2019
DOIs
Publication statusPublished - 15 Aug 2019

    Research areas

  • Characterization, Enzymatic treatment, Filtration, Lignin recovery, Scale-up

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Dynamic trapping as a selective route to renewable phthalide from biomass-derived furfuryl alcohol

    Lancefield, C. S., Fölker, B., Cioc, R. C., Stanciakova, K., Bulo, R. E., Lutz, M., Crockatt, M. & Bruijnincx, P. C. A., 15 Oct 2020, In : Angewandte Chemie - International Edition. Early View, 6 p.

    Research output: Contribution to journalArticle

  2. Analysis of the product streams obtained on butanosolv pretreatment of draff

    Foltanyi, F., Hawkins, J. E., Panovic, I., Bird, E. J., Gloster, T., Lancefield, C. S. & Westwood, N. J., Oct 2020, In : Biomass and Bioenergy. 141, 105680.

    Research output: Contribution to journalArticle

  3. Copper-mediated conversion of complex ethers to esters: enabling biopolymer depolymerisation under mild conditions

    Xiao, G., Montgomery, J., Lancefield, C. S., Panovic, I. & Westwood, N. J., 25 Sep 2020, In : Chemistry - A European Journal. 26, 54, p. 12397-12402 7 p.

    Research output: Contribution to journalArticle

  4. An introduction to model compounds of lignin linking motifs; synthesis and selection considerations for reactivity studies

    Lahive, C., Kamer, P., Lancefield, C. & Deuss, P. J., 9 Jul 2020, In : CHEMSUSCHEM. Early View

    Research output: Contribution to journalReview article

  5. Mild organosolv lignin extraction with alcohols: the importance of benzylic alkoxylation

    Zijlstra, D. S., Lahive, C., Analbers, C. A., Figueiredo, M. B., Wang, Z., Lancefield, C. & Deuss, P. J., 6 Apr 2020, In : ACS Sustainable Chemistry & Engineering . 8, 13, p. 5119-5131 13 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Surface trace doping of Na enhancing structure stability and adsorption properties of Li1.6Mn1.6O4 for Li+ recovery

    Qian, F., Zhao, B., Guo, M., Wu, Z., Zhou, W. & Liu, Z., 13 Aug 2020, In : Separation and Purification Technology. In press

    Research output: Contribution to journalArticle

  2. Understanding CO2 adsorption in a flexible zeolite through a combination of structural, kinetic and modelling techniques

    Verbraeken, M. C., Mennitto, R., Georgieva, V. M., Bruce, E. L., Greenaway, A. G., Cox, P. A., Gi Min, J., Bong Hong, S., Wright, P. A. & Brandani, S., 7 Oct 2020, In : Separation and Purification Technology. 256, 14 p., 117846.

    Research output: Contribution to journalArticle

ID: 258658297

Top