dc.contributor.author |
Ejekwu, Olayile
|
|
dc.contributor.author |
Ayeni, Augustine Omoniyi
|
|
dc.contributor.author |
Sadare, Olawumi Oluwafolakemi
|
|
dc.contributor.author |
Daramola, Michael Olawale
|
|
dc.date.accessioned |
2021-09-16T10:40:52Z |
|
dc.date.available |
2021-09-16T10:40:52Z |
|
dc.date.issued |
2021 |
|
dc.description.abstract |
Major concern in beneficiating lignocellulose is overcoming biomass
recalcitrance through pre-treatment. Molten hydrate salts (MHS) is a green solvent
with ability to swell and dissolve cellulose and biomass in a non-derivatizing way.
Over the last decade, MHSs have been used for isolated cellulose dissolution,
however very few studies have been reported on their effectiveness in pre-treating
lignocellulosic biomass. Therefore, effectiveness of their application as solvent for
pre-treating and fractionating corn cob is presented in this article. In this study,
seven molten hydrate salt pre-treatment solvent systems such as unary, binary and
ternary mixtures of ZnCl2.4H2O, LiClO4.3H2O and Urea were investigated for their
ability to pre-treat and fractionate biomass. The pre-treatment experiments were
carried out in a shaking incubator at 70°C for 60 minutes at a biomass: solvent ratio
of 1:10. The surface chemistry of the biomass was checked before and after pretreatment using Fourier Transform infrared spectroscopy. X-ray diffraction and
scanning electron microscopy were employed to check the crystallinity and surface
morphology of the biomass. Physicochemical analysis consistently indicated
a disruption in the structure of corncob due to removal of lignin and hemicellulose
during the pre-treatment process. Additionally, results showed a decrease in crystallinity and a change in surface morphology after the pre-treatment using all the
seven solvent systems (MHS solvents). The use of ZnCl2.4H2O/ Urea solvent displayed 100% recovery of cellulose, 42% recovery of hemicellulose and 44% recovery of lignin from the corn-cob when compared to the performance of the other
proposed solvent systems in this study. |
en_ZA |
dc.description.department |
Chemical Engineering |
en_ZA |
dc.description.librarian |
pm2021 |
en_ZA |
dc.description.sponsorship |
The National Research Foundation, South Africa and the University of the Witwatersrand, South Africa. |
en_ZA |
dc.description.uri |
http://www.tandfonline.com/loi/oaen20 |
en_ZA |
dc.identifier.citation |
Olayile Ejekwu, Augustine Omoniyi Ayeni, Olawumi Sadare & Michael
Olawale Daramola (2021) Development of non-derivatizing hydrate salt pre-treatment solvent
for pre-treatment and fractionation of corn cob, Cogent Engineering, 8:1, 1947444, DOI:
10.1080/23311916.2021.1947444. |
en_ZA |
dc.identifier.issn |
2331-1916 (online) |
|
dc.identifier.other |
10.1080/23311916.2021.1947444 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/81881 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Cogent OA |
en_ZA |
dc.rights |
© 2021 The Author(s). This open access
article is distributed under a Creative
Commons Attribution (CC-BY) 4.0 license. |
en_ZA |
dc.subject |
Pre-treatment |
en_ZA |
dc.subject |
Fractionation |
en_ZA |
dc.subject |
Corn cob |
en_ZA |
dc.subject |
Chemical engineering |
en_ZA |
dc.subject |
Biochemical engineering |
en_ZA |
dc.subject |
Bioconversion |
en_ZA |
dc.subject |
Bioenergy |
en_ZA |
dc.subject |
Molten hydrate salts (MHS) |
en_ZA |
dc.title |
Development of non-derivatizing hydrate salt pre-treatment solvent for pre-treatment and fractionation of corn cob |
en_ZA |
dc.type |
Article |
en_ZA |