71 0

Cultivation and harvesting of microalgae in photobioreactor for biodiesel production and simultaneous nutrient removal

Title
Cultivation and harvesting of microalgae in photobioreactor for biodiesel production and simultaneous nutrient removal
Author
전병훈
Keywords
Biodiesel; Photobioreactor; Microalgal biomass; Nutrient uptake; Harvesting; Moringa oleifera
Issue Date
2016-06
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ENERGY CONVERSION AND MANAGEMENT, v. 117, Page. 54-62
Abstract
Microalgae, Chlorella vulgaris and Scenedesmus obliquus were cultivated in a small scale vertical flat-plate photobioreactor (PBR) supplemented with municipal wastewater in order to achieve simultaneous wastewater treatment and biomass production for biofuel generation. Microalgal growth and nutrient removal including total nitrogen (TN), total phosphorus (TP), total inorganic carbon (TIC) and trace elements (Ca2+, Na+, Mg2+ and Zn2+) were monitored during microalgae cultivation. C. vulgaris and S. obliquus showed optimal specific growth rates (mu(opt)) of 1.39 and 1.41 day(-1), respectively, and the TN and TP were completely removed (˃99%) from the wastewater within 8 days. Microalgal biomass in the PBR was harvested using a natural flocculant produced from Moringa oleifera seeds. The harvesting efficiency of M. oleifera was 81% for C. vulgaris and 92% for S. obliquus. The amounts of saturated, monounsaturated, and poly-unsaturated fatty acids in the harvested biomass accounted for 18.66%, 71.61% and 9.75% for C. vulgaris and 28.67%, 57.14% and 11.15% for S. obliquus, respectively. The accumulated fatty acids were suitable to produce high quality biodiesel with characteristics equivalent to crop seeds oil-derived biodiesel. This study demonstrates the potential of microalgae-based biodiesel production through the coupling of advanced wastewater treatment with microalgae cultivation for low-cost biomass production in a PBR. (c) 2016 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0196890416301406?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/73208
ISSN
0196-8904; 1879-2227
DOI
10.1016/j.enconman.2016.03.017
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE