Catalytic hydrothermal upgradation of wheat husk
| Autor: | Rawel Singh, Sambha Dora, Thallada Bhaskar, Bhavya Balagurumurthy |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Waste Products
Magnetic Resonance Spectroscopy Environmental Engineering Renewable Energy Sustainability and the Environment Temperature Water Bioengineering General Medicine Decomposition Husk Catalysis chemistry.chemical_compound Hydrothermal liquefaction chemistry Yield (chemistry) Spectroscopy Fourier Transform Infrared Botany Acetone Plant Oils Lignin Hemicellulose Cellulose Waste Management and Disposal Triticum Nuclear chemistry |
| Zdroj: | Bioresource Technology. 149:446-451 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.09.092 |
| Popis: | Catalytic hydrothermal upgradation of wheat husk was performed at 280 °C for 15 min in the presence of alkaline catalysts (KOH and K2CO3). The effect of alkaline catalysts on the yield of bio-oil products and composition of bio-oils obtained were discussed. Total bio-oil yield (31%) comprising of bio-oil1 (ether fraction) and bio-oil2 (acetone fraction) was maximum with K2CO3 solution. Powder XRD (X-ray diffraction) analysis of wheat husk as well as bio-residue samples show that the peaks due to cellulose, hemicellulose and lignin become weak in bio-residue samples which suggest that these components have undergone hydrolytic cleavage/decomposition. The FTIR spectra of bio-oils indicate that the lignin in the wheat husk samples was decomposed to low molecular weight phenolic compounds. 1H Nuclear Magnetic Resonance (NMR) spectrum of bio-oil1 shows more than 50% of the protons resonate in the up field region from 0.5 ppm to 3.0 ppm. |
| Databáze: | OpenAIRE |
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