Biodiesel production from lipids in wet microalgae with microwave irradiation and bio-crude production from algal residue through hydrothermal liquefaction

被引：95

作者：

Cheng, Jun ^{[1
]}

Huang, Rui ^{[1
]}

Yu, Tao ^{[1
]}

Li, Tao ^{[1
]}

Zhou, Junhu ^{[1
]}

Cen, Kefa ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 151卷

基金：

中国国家自然科学基金;

关键词：

Microalgae; Biodiesel; Bio-crude; Microwave; Hydrothermal liquefaction; BIOMASS; TRANSESTERIFICATION; GASIFICATION; HYDROLYSIS; OIL;

D O I：

10.1016/j.biortech.2013.10.033

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A cogeneration process of biodiesel and bio-crude was proposed to make full use of wet microalgae bio-mass. High-grade biodiesel was first produced from lipids in wet microalgae through extraction and transesterification with microwave irradiation. Then, low-grade bio-crude was produced from proteins and carbohydrates in the algal residue through hydrothermal liquefaction. The total yield (40.19%) and the total energy recovery (67.73%) of the cogenerated biodiesel and bio-crude were almost equal to those of the bio-oil obtained from raw microalgae through direct hydrothermal liquefaction. Upon microwave irradiation, proteins were partially hydrolyzed and the hydrolysates were apt for deaminization under the hydrothermal condition of the algal residue. Hence, the total remaining nitrogen (16.02%) in the cogenerated biodiesel and bio-crude was lower than that (27.06%) in the bio-oil. The cogeneration process prevented lipids and proteins from reacting to produce low-grade amides and other long-chain nitrogen compounds during the direct hydrothermal liquefaction of microalgae. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：415 / 418

页数：4

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