Cargando…

The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass

The cooperative thermomechanical properties of plant-derived polymers have been studied insufficiently, although this feedstock has a very high potential. In the present paper, we analyzed the changes in the structure and physicochemical properties of lignin-rich biomass induced by thermomechanical...

Descripción completa

Detalles Bibliográficos
Autores principales: Podgorbunskikh, Ekaterina M., Bychkov, Aleksey L., Ryabchikova, Elena I., Lomovsky, Oleg I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070663/
https://www.ncbi.nlm.nih.gov/pubmed/32102256
http://dx.doi.org/10.3390/molecules25040995
_version_ 1783506027015045120
author Podgorbunskikh, Ekaterina M.
Bychkov, Aleksey L.
Ryabchikova, Elena I.
Lomovsky, Oleg I.
author_facet Podgorbunskikh, Ekaterina M.
Bychkov, Aleksey L.
Ryabchikova, Elena I.
Lomovsky, Oleg I.
author_sort Podgorbunskikh, Ekaterina M.
collection PubMed
description The cooperative thermomechanical properties of plant-derived polymers have been studied insufficiently, although this feedstock has a very high potential. In the present paper, we analyzed the changes in the structure and physicochemical properties of lignin-rich biomass induced by thermomechanical pretreatment. Low-temperature treatment allows one to retain the original supramolecular structure of the cell walls, while an appreciably high disintegration degree is reached. This increases the reactivity of the material in the subsequent heterogeneous reactions. Mechanical pretreatment at medium temperatures (10 °C), when almost all cell wall polymers except for low-molecular-weight lignin are in the glassy state, enhances the mobility of cell wall polymers and causes sufficient cellulose disordering, while the specific surface area is not significantly increased. High-temperature pretreatment of reed biomass is accompanied by pore formation and lignin release from the cell wall structure, which opens up new prospects for using this biomass as a matrix to produce core–shell-structured sorbents of heavy metals. The energy consumed by mechanochemical equipment for the activation of reed biomass was determined.
format Online
Article
Text
id pubmed-7070663
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-70706632020-03-19 The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass Podgorbunskikh, Ekaterina M. Bychkov, Aleksey L. Ryabchikova, Elena I. Lomovsky, Oleg I. Molecules Article The cooperative thermomechanical properties of plant-derived polymers have been studied insufficiently, although this feedstock has a very high potential. In the present paper, we analyzed the changes in the structure and physicochemical properties of lignin-rich biomass induced by thermomechanical pretreatment. Low-temperature treatment allows one to retain the original supramolecular structure of the cell walls, while an appreciably high disintegration degree is reached. This increases the reactivity of the material in the subsequent heterogeneous reactions. Mechanical pretreatment at medium temperatures (10 °C), when almost all cell wall polymers except for low-molecular-weight lignin are in the glassy state, enhances the mobility of cell wall polymers and causes sufficient cellulose disordering, while the specific surface area is not significantly increased. High-temperature pretreatment of reed biomass is accompanied by pore formation and lignin release from the cell wall structure, which opens up new prospects for using this biomass as a matrix to produce core–shell-structured sorbents of heavy metals. The energy consumed by mechanochemical equipment for the activation of reed biomass was determined. MDPI 2020-02-23 /pmc/articles/PMC7070663/ /pubmed/32102256 http://dx.doi.org/10.3390/molecules25040995 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Podgorbunskikh, Ekaterina M.
Bychkov, Aleksey L.
Ryabchikova, Elena I.
Lomovsky, Oleg I.
The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title_full The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title_fullStr The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title_full_unstemmed The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title_short The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass
title_sort effect of thermomechanical pretreatment on the structure and properties of lignin-rich plant biomass
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070663/
https://www.ncbi.nlm.nih.gov/pubmed/32102256
http://dx.doi.org/10.3390/molecules25040995
work_keys_str_mv AT podgorbunskikhekaterinam theeffectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT bychkovalekseyl theeffectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT ryabchikovaelenai theeffectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT lomovskyolegi theeffectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT podgorbunskikhekaterinam effectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT bychkovalekseyl effectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT ryabchikovaelenai effectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass
AT lomovskyolegi effectofthermomechanicalpretreatmentonthestructureandpropertiesofligninrichplantbiomass