Conversion of microalgal lipids to biodiesel using chromium-aluminum mixed oxide as a heterogeneous solid acid catalyst

被引：83

作者：

Guldhe, Abhishek ^{[1
]}

Moura, Carla V. R. ^{[2
]}

Singh, Poonam ^{[1
]}

Rawat, Ismail ^{[1
]}

Moura, Edmilson M. ^{[2
]}

Sharma, Yogesh ^{[3
]}

Bux, Faizal ^{[1
]}

机构：

[1] Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa

[2] Fed Univ Piaui UFPI, Dept Chem, BR-64049550 Teresina, PI, Brazil

[3] Banaras Hindu Univ, Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India

来源：

RENEWABLE ENERGY | 2017年 / 105卷

基金：

新加坡国家研究基金会;

关键词：

Heterogeneous catalyst; Microalgae; Chromium; Biodiesel; Transesterification; FREE FATTY-ACIDS; SURFACE-AREA; TRANSESTERIFICATION; OIL; DEHYDROGENATION; ESTERIFICATION; EFFICIENT; NITROGEN; LIPASE;

D O I：

10.1016/j.renene.2016.12.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Heterogeneous solid acid catalyzed conversion of microalgal lipids to biodiesel is a scarcely studied area. In this study chromium-aluminum mixed oxide catalyst was investigated for catalytic conversion of microalgal lipids to biodiesel. Lipids from Scenedesmus obliquus grown in an open raceway pond (3000L) was used as feedstock. Reaction variables such as temperature, methanol to oil molar ratio and catalyst amount were optimized using response surface methodology. FAME conversion of 98.28% was achieved using chromium-aluminum catalyst at 80 degrees C, with methanol to oil molar ratio of 20:1 and catalyst amount of 15%. Catalytic efficiency of this heterogeneous solid acid catalyst was compared to a homogeneous acid catalyst (sulfuric acid). Chromium-aluminum mixed oxide catalyst can be effectively used for 4 batches of conversion reactions without significant loss in its activity. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：175 / 182

页数：8

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