Research Progress on Pretreatment for Strengthening Anaerobic Digestion of Microalgae
Asia-Pacific Journal of Biology
Volume 2, Issue 1, March 2019, Pages: 10-14
Received: Apr. 29, 2019; Accepted: May 23, 2019; Published: Jul. 9, 2019
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Authors
An Yinmin, College of Electrical Engineering, Guizhou University, Guiyang, China
Lei Yunhui, Biogas Institute of Mibistry of Agriculture, Chengdu, China
Wu Jin, Biogas Institute of Mibistry of Agriculture, Chengdu, China
Liu Yi, Biogas Institute of Mibistry of Agriculture, Chengdu, China
Gu Hongyan, College of Electrical Engineering, Guizhou University, Guiyang, China
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Abstract
Microalgae, as a large amount of renewable resources, is an important potential raw material for biofuel production. Anaerobic digestion is one of the most energy-saving technologies for microalgae to be converted into biofuels. However, the special properties of microalgae cell walls will limit the hydrolysis stage of the anaerobic digestion process, resulting in low conversion efficiency and less than the theoretical value of biogas production. In order to increase biogas production, microalgae must be pretreated to break down their hard cell walls and accelerate cell dissolution to increase biogas production. The methods of breaking the cell wall of microalgae are physical, chemical and biological. Physical and chemical technology can improve the production of biogas to a certain extent, but high energy consumption, easy to cause environmental pollution, making it impossible to achieve industrial application. Biotechnology can not only improve the production of biogas, but also is an environment-friendly pretreatment process with many advantages, such as low energy consumption, high efficiency, no corrosion, less derivative products, etc. However, pure enzyme reagent is expensive and economic benefits are not feasible. At present, low temperature pretreatment can make full use of process waste heat to reduce energy consumption, and will not cause secondary pollution, which is the most economically and technically feasible method.
Keywords
Microalgae, Anaerobic Digestion, Biogas, Pretreatment
To cite this article
An Yinmin, Lei Yunhui, Wu Jin, Liu Yi, Gu Hongyan, Research Progress on Pretreatment for Strengthening Anaerobic Digestion of Microalgae, Asia-Pacific Journal of Biology. Vol. 2, No. 1, 2019, pp. 10-14.
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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