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Biodiesel production from algae cultivated in winter with artificial wastewater through pH regulation by acetic acid
Zhu, Liandong1,2; Hiltunen, Erkki1,2; Shu, Qing3; Zhou, Weizheng3; Li, Zhaohua4; Wang, Zhongming3
2014-09-01
发表期刊APPLIED ENERGY
卷号128页码:103-110
摘要Algae have been considered as a promising biodiesel feedstock. One of the major factors affecting large-scale algae technology application is poor wintering cultivation performance. In this study, an integrated approach is investigated combining freshwater microalgae Chlorella zofingiensis wintering cultivation in pilot-scale photobioreactors with artificial wastewater treatment. Mixotrophic culture with the addition of acetic acid (pH-regulation group) and autotrophic culture (control group) were designed, and the characteristics of algal growth, lipid and biodiesel production, and nitrogen and phosphate removal were examined. The results showed that, by using acetic acid three times per day to regulate pH at between 6.8 and 7.2, the total nitrogen (TN) and total phosphate (TP) removal could be increased from 45.2% to 73.5% and from 92.2% to 100%, respectively. Higher biomass productivity of 66.94 mg L-1 day(-1) with specific growth rate of 0.260 day(-1) was achieved in the pH-regulation group. The lipid content was much higher when using acetic acid to regulate pH, and the relative lipid productivity reached 37.48 mg L-1 day(-1), The biodiesel yield in the pH-regulated group was 19.44% of dry weight, with 16-18 carbons as the most abundant composition for fatty acid methyl esters. The findings of the study prove that pH adjustment using acetic acid is efficient in cultivating C zofingiensis in wastewater in winter for biodiesel production and nutrient reduction. (C) 2014 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Chlorella Zofingiensis Pilot Scale Biodiesel Ph Regulation Artificial Wastewater Net Energy Ratio
WOS标题词Science & Technology ; Technology
DOI10.1016/j.apenergy.2014.04.039
研究领域[WOS]Energy & Fuels ; Engineering
关键词[WOS]CHLORELLA-ZOFINGIENSIS ; BIOFUEL PRODUCTION ; NUTRIENT REMOVAL ; TECHNOECONOMIC ASSESSMENT ; SPIRULINA-PLATENSIS ; BIOMASS PRODUCTION ; FATTY-ACIDS ; MICROALGAE ; PHOTOBIOREACTORS ; PYRENOIDOSA
收录类别SCI
语种英语
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000337776500010
引用统计
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10776
专题中国科学院广州能源研究所
作者单位1.Univ Vaasa, Fac Technol, FI-65101 Vaasa, Finland
2.Vaasa Energy Inst, FI-65101 Vaasa, Finland
3.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
4.Hubei Univ, Fac Resources & Environm, Wuhan 430062, Peoples R China
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Zhu, Liandong,Hiltunen, Erkki,Shu, Qing,et al. Biodiesel production from algae cultivated in winter with artificial wastewater through pH regulation by acetic acid[J]. APPLIED ENERGY,2014,128:103-110.
APA Zhu, Liandong,Hiltunen, Erkki,Shu, Qing,Zhou, Weizheng,Li, Zhaohua,&Wang, Zhongming.(2014).Biodiesel production from algae cultivated in winter with artificial wastewater through pH regulation by acetic acid.APPLIED ENERGY,128,103-110.
MLA Zhu, Liandong,et al."Biodiesel production from algae cultivated in winter with artificial wastewater through pH regulation by acetic acid".APPLIED ENERGY 128(2014):103-110.
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