Algal biodiesel production with engineered biochar as a heterogeneous solid acid catalyst

被引：138

作者：

Behera, Bunushree ^{[1
]}

Selvam, Mari S. ^{[1
]}

Dey, Baishali ^{[1
]}

Balasubramanian, P. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Biotechnol & Med Engn, Agr & Environm Biotechnol Grp, Rourkela 769008, India

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 310卷

关键词：

Engineered biochar; Biodiesel; Microalgae; Surface modification; Transesterification; Pyrolysis; OIL; PYROLYSIS; MICROALGAE;

D O I：

10.1016/j.biortech.2020.123392

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study evaluates the use of engineered biochar as a heterogeneous solid acid catalyst for transesterification of algal oil derived from a native microalgal consortium. Biochar derived from sugarcane bagasse, coconut shell, corncob and peanut shell were evaluated for catalytic activity following surface modification. Peanut shell pyrolyzed at 400 degrees C with the sulfonic acid density of 0.837 mmol/g having 6.616 m(2)/g surface area was selected for efficient catalysis. The efficiency of transesterification was evaluated with 1-7 wt% catalyst loading, methanol: oil ratio of 6:1 to 30:1 at 55-85 degrees C over 2-8 h. Biodiesel yield of 94.91% was obtained with 5 wt% catalyst loading, MeOH: oil ratio of 20:1 at 65 degrees C after 4 h. Spectral analysis of algal biodiesel showed the presence of functional groups corresponding to esters. GC-MS analysis revealed the prominent presence of palmitic and oleic acids, further advocating the suitability of the technology for commercial application.

引用

页数：8

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