Fractionation and characterization of Steam Explosion lignin through neutral and mildly acidic organosolv techniques

Research output: Conference materialsPosterResearch

Abstract

Lignocellulosic biomass is the largest pool of renewable org. material in the world. As such it is imperative to develop new methods in order to fully utilize this vast resource. The main problem with lignocellulosic biomass is that due to its recalcitrant nature lignin is frequently considered to be non-​value waste and preferably burned during manufg., to produce energy for the biorefinery. In this study, we present green fractionation methods to ext. higher value lignin fractions from crude "Steam Explosion" lignin, contg. large amts. of insol. material. The lignin was from Italian Bioproducts, IBP, and produced as a side product using 2nd generation bioethanol process PROESA technol. and poplar as feedstock. Insol. lignin is both difficult to characterize and to refine into valuable products. The extn. methods compared in this study include ethanol extn., formic acid extn. and extn. with a mixed solvent contg. equal amt. of formic acid and ethanol. The extd. lignins had significantly improved soly. characteristics compared to the initial steam explosion lignin. For example, in the case of ethanol extn. with a yield of 17,​5 % (wt.​/wt.)​, the isolated lignin was completely sol. e.g., in acetone and 1,​4-​dioxane. The lignin structure contained all the native lignin linkage types, such as β-​O-​4, β-​5 and β-​β, indicating, that the mol. structure remained to a high extent intact and contained very few carbohydrates according to HSQC-​NMR and pyrolysis-​GC​/MS. The MW value of the fraction was detd. to be 2,​2 kDa and the mol. wt. range was below 10 kDa.
Original languageEnglish
Publication statusPublished - 12 Jun 2019
MoE publication typeNot Eligible
Event23rd Annual ACS Green Chemistry & Engineering Conference - Reston, VA, United States, Reston, United States
Duration: 11 Jun 201913 Jun 2019
https://www.gcande.org/

Conference

Conference23rd Annual ACS Green Chemistry & Engineering Conference
CountryUnited States
CityReston
Period11/06/201913/06/2019
Internet address

Fields of Science

  • 116 Chemical sciences

Cite this

@conference{18c1df60677645279577904ecb775861,
title = "Fractionation and characterization of Steam Explosion lignin through neutral and mildly acidic organosolv techniques",
abstract = "Lignocellulosic biomass is the largest pool of renewable org. material in the world. As such it is imperative to develop new methods in order to fully utilize this vast resource. The main problem with lignocellulosic biomass is that due to its recalcitrant nature lignin is frequently considered to be non-​value waste and preferably burned during manufg., to produce energy for the biorefinery. In this study, we present green fractionation methods to ext. higher value lignin fractions from crude {"}Steam Explosion{"} lignin, contg. large amts. of insol. material. The lignin was from Italian Bioproducts, IBP, and produced as a side product using 2nd generation bioethanol process PROESA technol. and poplar as feedstock. Insol. lignin is both difficult to characterize and to refine into valuable products. The extn. methods compared in this study include ethanol extn., formic acid extn. and extn. with a mixed solvent contg. equal amt. of formic acid and ethanol. The extd. lignins had significantly improved soly. characteristics compared to the initial steam explosion lignin. For example, in the case of ethanol extn. with a yield of 17,​5 {\%} (wt.​/wt.)​, the isolated lignin was completely sol. e.g., in acetone and 1,​4-​dioxane. The lignin structure contained all the native lignin linkage types, such as β-​O-​4, β-​5 and β-​β, indicating, that the mol. structure remained to a high extent intact and contained very few carbohydrates according to HSQC-​NMR and pyrolysis-​GC​/MS. The MW value of the fraction was detd. to be 2,​2 kDa and the mol. wt. range was below 10 kDa.",
keywords = "116 Chemical sciences",
author = "Riku Maltari and Rui Zhang and Jussi Kontro and Mikkil{\"a}, {Joona Aleksi} and Nousiainen, {Paula Annukka} and Kristiina Hilden and Timo Repo and Jussi Sipil{\"a}",
year = "2019",
month = "6",
day = "12",
language = "English",
note = "null ; Conference date: 11-06-2019 Through 13-06-2019",
url = "https://www.gcande.org/",

}

Fractionation and characterization of Steam Explosion lignin through neutral and mildly acidic organosolv techniques. / Maltari, Riku; Zhang, Rui; Kontro, Jussi; Mikkilä, Joona Aleksi; Nousiainen, Paula Annukka; Hilden, Kristiina; Repo, Timo; Sipilä, Jussi.

2019. Poster session presented at 23rd Annual ACS Green Chemistry & Engineering Conference, Reston, United States.

Research output: Conference materialsPosterResearch

TY - CONF

T1 - Fractionation and characterization of Steam Explosion lignin through neutral and mildly acidic organosolv techniques

AU - Maltari, Riku

AU - Zhang, Rui

AU - Kontro, Jussi

AU - Mikkilä, Joona Aleksi

AU - Nousiainen, Paula Annukka

AU - Hilden, Kristiina

AU - Repo, Timo

AU - Sipilä, Jussi

PY - 2019/6/12

Y1 - 2019/6/12

N2 - Lignocellulosic biomass is the largest pool of renewable org. material in the world. As such it is imperative to develop new methods in order to fully utilize this vast resource. The main problem with lignocellulosic biomass is that due to its recalcitrant nature lignin is frequently considered to be non-​value waste and preferably burned during manufg., to produce energy for the biorefinery. In this study, we present green fractionation methods to ext. higher value lignin fractions from crude "Steam Explosion" lignin, contg. large amts. of insol. material. The lignin was from Italian Bioproducts, IBP, and produced as a side product using 2nd generation bioethanol process PROESA technol. and poplar as feedstock. Insol. lignin is both difficult to characterize and to refine into valuable products. The extn. methods compared in this study include ethanol extn., formic acid extn. and extn. with a mixed solvent contg. equal amt. of formic acid and ethanol. The extd. lignins had significantly improved soly. characteristics compared to the initial steam explosion lignin. For example, in the case of ethanol extn. with a yield of 17,​5 % (wt.​/wt.)​, the isolated lignin was completely sol. e.g., in acetone and 1,​4-​dioxane. The lignin structure contained all the native lignin linkage types, such as β-​O-​4, β-​5 and β-​β, indicating, that the mol. structure remained to a high extent intact and contained very few carbohydrates according to HSQC-​NMR and pyrolysis-​GC​/MS. The MW value of the fraction was detd. to be 2,​2 kDa and the mol. wt. range was below 10 kDa.

AB - Lignocellulosic biomass is the largest pool of renewable org. material in the world. As such it is imperative to develop new methods in order to fully utilize this vast resource. The main problem with lignocellulosic biomass is that due to its recalcitrant nature lignin is frequently considered to be non-​value waste and preferably burned during manufg., to produce energy for the biorefinery. In this study, we present green fractionation methods to ext. higher value lignin fractions from crude "Steam Explosion" lignin, contg. large amts. of insol. material. The lignin was from Italian Bioproducts, IBP, and produced as a side product using 2nd generation bioethanol process PROESA technol. and poplar as feedstock. Insol. lignin is both difficult to characterize and to refine into valuable products. The extn. methods compared in this study include ethanol extn., formic acid extn. and extn. with a mixed solvent contg. equal amt. of formic acid and ethanol. The extd. lignins had significantly improved soly. characteristics compared to the initial steam explosion lignin. For example, in the case of ethanol extn. with a yield of 17,​5 % (wt.​/wt.)​, the isolated lignin was completely sol. e.g., in acetone and 1,​4-​dioxane. The lignin structure contained all the native lignin linkage types, such as β-​O-​4, β-​5 and β-​β, indicating, that the mol. structure remained to a high extent intact and contained very few carbohydrates according to HSQC-​NMR and pyrolysis-​GC​/MS. The MW value of the fraction was detd. to be 2,​2 kDa and the mol. wt. range was below 10 kDa.

KW - 116 Chemical sciences

M3 - Poster

ER -

Maltari R, Zhang R, Kontro J, Mikkilä JA, Nousiainen PA, Hilden K et al. Fractionation and characterization of Steam Explosion lignin through neutral and mildly acidic organosolv techniques. 2019. Poster session presented at 23rd Annual ACS Green Chemistry & Engineering Conference, Reston, United States.