Biodiesel Production over Banana Peel Biochar as a Sustainable Catalyst

被引：6

作者：

Dias, Ana Paula Soares ^{[1
,2
]}

Pedra, Igor ^{[3
]}

Salvador, Erica ^{[3
]}

Rijo, Bruna ^{[2
]}

Pereira, Manuel Francisco Costa ^{[1
]}

Serralha, Fatima ^{[3
]}

Nogueira, Isabel ^{[4
]}

机构：

[1] Univ Lisbon, CERENA, Inst Super Tecn, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal

[2] Inst Politecn Portalegre, VALORIZA Res Ctr Endogenous Resource Valorizat, P-7300555 Portalegre, Portugal

[3] Inst Politecn Setubal, Escola Super Tecnol Barreiro, Rua Americo da Silva Marinho, P-2839001 Lavradio, Portugal

[4] Univ Lisbon, MicroLab, Inst Super Tecn, Av Rovisco Pais, P-1049001 Lisbon, Portugal

来源：

CATALYSTS | 2024年 / 14卷 / 04期

关键词：

banana peel biochar; carbonization; bi-functional catalysts; biodiesel; transesterification; esterification; BIOMASS CHAR; GASIFICATION; CARBON; REACTIVITY; SOIL;

D O I：

10.3390/catal14040266

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Biodiesel from waste frying oil was produced via methanolysis using biochar-based catalysts prepared by carbonizing banana peels (350 degrees C and 400 degrees C) mixed with 20% (wt.) of alkali carbonates (Na, Li, or K). The catalysts exhibited a bi-functional character: acidic and basic. Raman spectroscopy confirmed the alkali's role in char graphitization, influencing morphology and oxygen content. Oxygenated surface sites acted as acidic sites for free fatty acid esterification, while alkali sites facilitated triglyceride transesterification. The best catalyst obtained by carbonization at 350 degrees C, without alkali modifier, led to 97.5% FAME by processing a waste frying oil with 1.2 mg KOH/g oil acidity. Most of the studied catalysts yielded high-quality glycerin, allowing the significance of homogenous catalyzed processes to be discarded.

引用

页数：18

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