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Thermogravimetric and kinetic studies of metal (Ru/Fe) impregnated banana pseudo-stem (Musa acuminate)

Published on Aug 1, 2019in Bioresource Technology6.669
· DOI :10.1016/j.biortech.2019.121318
Ashutosh Kumar4
Estimated H-index: 4
(IITR: Indian Institute of Technology Roorkee),
S.V. Prasad Mylapilli1
Estimated H-index: 1
(IITR: Indian Institute of Technology Roorkee),
Sivamohan N. Reddy12
Estimated H-index: 12
(IITR: Indian Institute of Technology Roorkee)
Abstract
Abstract Pyrolysis/gasification have proved to be promising conversion techniques to convert biomass into fuels. The current research work focuses on impregnation of Ru and Fe into banana pseudo-stem to study kinetics, pyrolytic behaviour and their impact during pyrolysis through thermogravimetric analyser (TGA). Samples weight loss were analyzed by TGA at four different heating rates (5–20 °C min−1) over the temperature range of 30–900 °C. Isoconversional models such as Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sinose (KAS), and Kissinger’s methods were employed to calculate the activation energy and pre-exponential factor for Ru-impregnated (FWO: Eα = 73.32 kJ mol−1, KAS: Eα = 68.23 kJ mol−1 and Kissinger’s: Eα = 165.94 kJ mol−1) Fe-impregnated biomass (FWO: Eα = 86.78 kJ mol−1, KAS: Eα = 82.34 kJ mol−1 and Kissinger’s: Eα = 192.37 kJ mol−1) and compared with raw biomass (FWO: Eα = 116.22 kJ mol−1, KAS: Eα = 113.39 kJ mol−1 and Kissinger’s: Eα = 194.86 kJ mol−1). Lower activation energy and reduced weight loss were observed for metal impregnated biomass over the raw biomass.
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#1Ashutosh Kumar (IITR: Indian Institute of Technology Roorkee)H-Index: 4
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Abstract Integration of metals into the biomass matrix has been found to be an alternate strategy to the conventional catalysts that are prone to deactivation. Different metals like Ni (0.98 mol/kg), Ru (0.76 mol/kg) and Fe (0.83 mol/kg) are separately impregnated into banana pseudo-stem to analyse their impact on H2 yields. In-situ gasification of metal impregnated biomass was conducted over sub/- and supercritical water range of 300–600 °C, with 1:10 biomass-to-water ratio for 60 min. X-ray di...
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