A Two-Step Catalytic Depolymerization of Alkali Treated Pennisetum glaucum L. and Melia dubia cav. into Low Molecular Weight (LMW) Aromatics Full article
| Journal |
The Madras Agricultural Journal
ISSN: 0024-9602 |
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| Output data | Year: 2018, Volume: 105, Number: 1-3, Pages: 120-126 Pages count : 6 DOI: 10.29321/MAJ.2018.000115 | ||||
| Tags | Lignocellulosic-biomass, Alkaline H2O2, Catalysts, Depolymerization, Aromatics | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 |
Department of Biotechnology The Ministry of Education and Science of the Russian Federation |
DBT/NRM/CBE/AGM/2014/R016 |
Abstract:
The potential of lignin and its challenge for valorization has become the gold-rush nowadays for emerging biorefineries. In the present investigation, alkaline H2O2 pre-treated two lignocellulosic biomass (LCB), agro residue (pearl millet) and hardwood (Melia dubia) were subjected to catalytic depolymerization. Of the catalysts optimized, Ru/C 1% recovered higher monomeric yield of 67% over Ni/C on carbon supports. The alkaline H2O2 pre-treatment of pearl millet and M. dubia showed less than 40% of biomass conversion into aromatics with more than 50% cellulose
and hemicellulosic derivatives. The solid cox and gaseous loss for alkaline H2O2 pearl millet biomass sample were found to be 16.13% and 4.42 % for Ru- and 30.00% and 35.43 % for 1% Ru+ respectively with highest monomeric (97.84%) and least polymeric (2.16%) yield. Sugar derivatives such as diols and acids were detected more compared to lignin derivatives in alkali pretreated pearl millet. On the other hand, the alkaline H2O2 pre-treated M. dubia lignin registered a solid cox of 16.97%, gaseous loss of 12.95% and highest monomeric yield of 69.53% for 1% Ru+ which
includes p-propyl syringol (0.32 mg.ml-1), p-propyl guaiacol (0.27 mg.ml-1), tetra-hydrofurfurol (0.12 mg.ml-1), p-ethyl syringol (0.08 mg.ml-1), syringol (0.05 mg.ml-1) and so on. From the results obtained, it can be concluded that alkaline H2O2 pre-treated M. dubia is a suitable candidate for lignin based bio-refineries for high value platform chemicals, whereas alkaline H2O2 pretreated pearl millet can be employed for bio-ethanol production.
Cite:
Nishanth S.
, Chikunov A.
, Taran O.P.
, Parmon V.N.
, Uthandi S.
A Two-Step Catalytic Depolymerization of Alkali Treated Pennisetum glaucum L. and Melia dubia cav. into Low Molecular Weight (LMW) Aromatics
The Madras Agricultural Journal. 2018. V.105. N1-3. P.120-126. DOI: 10.29321/MAJ.2018.000115 РИНЦ OpenAlex
A Two-Step Catalytic Depolymerization of Alkali Treated Pennisetum glaucum L. and Melia dubia cav. into Low Molecular Weight (LMW) Aromatics
The Madras Agricultural Journal. 2018. V.105. N1-3. P.120-126. DOI: 10.29321/MAJ.2018.000115 РИНЦ OpenAlex
Dates:
| Submitted: | Feb 14, 2018 |
| Published online: | Mar 1, 2018 |
| Accepted: | Mar 26, 2018 |
Identifiers:
| Elibrary: | 36788497 |
| OpenAlex: | W2889355880 |