Towards integrated sustainable biofuel and chemical production: An application of banana pseudostem ash in the production of biodiesel and recovery of lignin from bamboo leaves.

Autor: Daimary N; Department of Energy, Tezpur University, Napaam, 784028, Assam, India. Electronic address: niran.daima@gmail.com., Eldiehy KSH; Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, 71524, Assiut Branch, Egypt; Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, 784028, Assam, India., Bora N; Department of Energy, Tezpur University, Napaam, 784028, Assam, India., Boruah P; Department of Chemical Engineering, Indian Institute of Technology, Guwahati, 781039, Assam, India., Rather MA; Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, 784028, Assam, India., Mandal M; Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, 784028, Assam, India., Bora U; Department of Chemical Science, Tezpur University, Napaam, 784028, Assam, India., Deka D; Department of Energy, Tezpur University, Napaam, 784028, Assam, India.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Feb; Vol. 314, pp. 137625. Date of Electronic Publication: 2022 Dec 23.
DOI: 10.1016/j.chemosphere.2022.137625
Abstrakt: This study investigated an integrated approach to the biowaste transformation and valorization of byproducts. Biochar obtained from the banana pseudostem was calcined to synthesize a heterogeneous catalyst and sustainably prepare a highly alkaline solution. The ash was utilized directly as a heterogeneous catalyst in biodiesel production from waste cooking oil. At the same time, an alkaline solution prepared from the ash was used for delignification and recovery of lignin from bamboo leaves by the hydrothermal reaction. Techniques like Fourier-transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller (BET), Transmission electron microscopy (TEM), and Energy dispersive X-ray (EDX) were applied to characterized the catalyst. The alkaline solution was analyzed with Atomic absorption spectroscopy (AAS). The Response surface methodology (RSM) technique was considered for the optimization of different parameters in the transesterification and hydrothermal reaction. Under the optimized condition, waste cooking oil (WCO) to Fatty acid methyl ester (FAME) conversion was 97.56 ± 0.11%, and lignin recovery was 43.20 ± 0.45%. While at the best operating pyrolysis temperature, the liquid fraction yield from the banana pseudostem (500 °C) was 38.10 ± 0.31 wt%. This integrated study approach encourages the inexpensive, sustainable, and environment-friendly pathway for synthesizing catalysts and preparing a highly alkaline solution for the valorization of biowaste into biofuel and biochemicals.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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