Waste-derived calcium oxide catalysts in biodiesel production: Exploring various waste sources, deactivation challenges, and improvement strategies

被引：4

作者：

Macheli, Lebohang ^{[1
]}

Malefane, Mope Edwin ^{[2
]}

Jewell, Linda L. ^{[1
]}

机构：

[1] Univ South Africa, Dept Chem & Mat Engn, ZA-1710 Johannesburg, South Africa

[2] Univ South Africa, Inst Nanotechnol & Water Sustainabil, ZA-1710 Johannesburg, South Africa

来源：

BIORESOURCE TECHNOLOGY REPORTS | 2025年 / 29卷

基金：

新加坡国家研究基金会;

关键词：

Biodiesel; Waste valorization; Waste-derived CaO; Catalyst deactivation; Transesterification; SOLID BASE CATALYST; HETEROGENEOUS CATALYST; COOKING OIL; SOYBEAN OIL; PALM OIL; BIOMASS GASIFICATION; ECONOMIC-ANALYSIS; CAO CATALYST; SNAIL SHELL; TRANSESTERIFICATION;

D O I：

10.1016/j.biteb.2025.102021

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

This review explores the use of waste-derived calcium oxide (CaO) catalysts in biodiesel production, highlighting their potential as sustainable and cost-effective alternatives to conventional catalysts. Unlike prior studies that broadly address catalysis, this work focuses on enhancing biodiesel yield and quality by identifying optimal strategies for CaO catalyst performance. Key elements addressed include: (i) customizing CaO catalysts for diverse feedstocks to enhance resistance to leaching and deactivation, (ii) mitigating the impact of free fatty acids and water content in feedstocks, which often cause unwanted side reactions, (iii) improving catalyst stability and efficiency through tailored preparation techniques, such as doping and support materials, and (iv) evaluating environmental and economic benefits. CaO catalysts derived from waste materials show promise due to their high basicity, reduced methanol solubility, and accessibility, offering a feasible route to biodiesel production at a lower cost. This review summarizes current advancements and suggests pathways for future development to improve the industrial viability of waste-derived CaO catalysts in biodiesel applications.

引用

页数：19

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