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Green solvents-based fractionation process for kraft lignin with controlled dispersity and molecular weight

Ajao, Olumoye; Jeaidi, Jawad; Benali, Marzouk; Abdelaziz, Omar Y. LU and Hulteberg, Christian P. LU (2019) In Bioresource Technology 291.
Abstract
The aim of this work is to develop a novel green solvent based sustainable process to refine lignin into low molecular weight (LMW) and high molecular weight (HMW) fractions. Lignin dispersity reduction were experimentally determined using four solvent mixtures, and benchmarked against eight pure solvents. Data outputs were used for modelling the integrated fractionation process. Dispersity reduction of up to 73% was achieved for the high value LMW fraction. Also, a 90% reduction of energy requirement was achieved with an optimized process incorporating a mechanical vapor compression system. This study showed that solvent mixtures involving water can significantly reduce the cost, environment, health and safety impacts of lignin... (More)
The aim of this work is to develop a novel green solvent based sustainable process to refine lignin into low molecular weight (LMW) and high molecular weight (HMW) fractions. Lignin dispersity reduction were experimentally determined using four solvent mixtures, and benchmarked against eight pure solvents. Data outputs were used for modelling the integrated fractionation process. Dispersity reduction of up to 73% was achieved for the high value LMW fraction. Also, a 90% reduction of energy requirement was achieved with an optimized process incorporating a mechanical vapor compression system. This study showed that solvent mixtures involving water can significantly reduce the cost, environment, health and safety impacts of lignin fractionation. Techno-economic evaluation confirmed the economic viability of a large-scale process processing 50 tonne/day of lignin. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lignin fractionation, Lignin biorefining, Solubility parameter, Techno-economic analysis, Environmental impact assessment
in
Bioresource Technology
volume
291
publisher
Elsevier
external identifiers
  • scopus:85069639635
ISSN
0960-8524
DOI
10.1016/j.biortech.2019.121799
language
English
LU publication?
yes
id
183e03fe-5931-4d47-b0a5-ac1e6b1f09ce
date added to LUP
2019-07-25 05:23:03
date last changed
2019-08-28 04:57:22
@article{183e03fe-5931-4d47-b0a5-ac1e6b1f09ce,
  abstract     = {The aim of this work is to develop a novel green solvent based sustainable process to refine lignin into low molecular weight (LMW) and high molecular weight (HMW) fractions. Lignin dispersity reduction were experimentally determined using four solvent mixtures, and benchmarked against eight pure solvents. Data outputs were used for modelling the integrated fractionation process. Dispersity reduction of up to 73% was achieved for the high value LMW fraction. Also, a 90% reduction of energy requirement was achieved with an optimized process incorporating a mechanical vapor compression system. This study showed that solvent mixtures involving water can significantly reduce the cost, environment, health and safety impacts of lignin fractionation. Techno-economic evaluation confirmed the economic viability of a large-scale process processing 50 tonne/day of lignin.},
  articleno    = {121799},
  author       = {Ajao, Olumoye and Jeaidi, Jawad and Benali, Marzouk and Abdelaziz, Omar Y. and Hulteberg, Christian P.},
  issn         = {0960-8524},
  keyword      = {Lignin fractionation,Lignin biorefining,Solubility parameter,Techno-economic analysis,Environmental impact assessment},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Green solvents-based fractionation process for kraft lignin with controlled dispersity and molecular weight},
  url          = {http://dx.doi.org/10.1016/j.biortech.2019.121799},
  volume       = {291},
  year         = {2019},
}