Next Article in Journal
Increasing Polarity in Tacrine and Huprine Derivatives: Potent Anticholinesterase Agents for the Treatment of Myasthenia Gravis
Next Article in Special Issue
Production of Flocculants, Adsorbents, and Dispersants from Lignin
Previous Article in Journal
Peptide Nucleic Acids as a Tool for Site-Specific Gene Editing
Previous Article in Special Issue
Lignin from Hardwood and Softwood Biomass as a Lubricating Additive to Ethylene Glycol
Open AccessArticle

Production of Micro- and Nanoscale Lignin from Wheat Straw Using Different Precipitation Setups

Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria
*
Author to whom correspondence should be addressed.
Molecules 2018, 23(3), 633; https://doi.org/10.3390/molecules23030633
Received: 30 January 2018 / Revised: 7 March 2018 / Accepted: 9 March 2018 / Published: 11 March 2018
(This article belongs to the Special Issue Lignin for Energy, Chemicals and Materials)
Micro- and nanosize lignin has recently gained interest due to its improved properties compared to standard lignin available today. As the second most abundant biopolymer after cellulose, lignin is readily available but used for rather low-value applications. Applications for lignin in micro- to nanoscale however, ranging from improvement of mechanical properties of polymer nanocomposites, have bactericidal and antioxidant properties and impregnations to hollow lignin drug carriers for hydrophobic and hydrophilic substances. This research represents a whole biorefinery process chain and compares different precipitation setups to produce submicron lignin particles from lignin containing an organosolv pretreatment extract from wheat straw. A batch precipitation in a stirred vessel was compared with continuous mixing of extract and antisolvent in a T-fitting and mixing in a T-fitting followed by a static mixer. The precipitation in the combination of T-fitting and static mixer with improved precipitation parameters yields the smallest particle size of around 100 nm. Furthermore, drying of particles did not influence the particle sizes negatively by showing decreased particle diameters after the separation process. View Full-Text
Keywords: lignin; lignocellulose; nanoparticles; microparticles; biorefinery; organosolv; wheat straw; direct precipitation lignin; lignocellulose; nanoparticles; microparticles; biorefinery; organosolv; wheat straw; direct precipitation
Show Figures

Graphical abstract

MDPI and ACS Style

Beisl, S.; Loidolt, P.; Miltner, A.; Harasek, M.; Friedl, A. Production of Micro- and Nanoscale Lignin from Wheat Straw Using Different Precipitation Setups. Molecules 2018, 23, 633. https://doi.org/10.3390/molecules23030633

AMA Style

Beisl S, Loidolt P, Miltner A, Harasek M, Friedl A. Production of Micro- and Nanoscale Lignin from Wheat Straw Using Different Precipitation Setups. Molecules. 2018; 23(3):633. https://doi.org/10.3390/molecules23030633

Chicago/Turabian Style

Beisl, Stefan; Loidolt, Petra; Miltner, Angela; Harasek, Michael; Friedl, Anton. 2018. "Production of Micro- and Nanoscale Lignin from Wheat Straw Using Different Precipitation Setups" Molecules 23, no. 3: 633. https://doi.org/10.3390/molecules23030633

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop