The feasibility of biodiesel production by microalgae using industrial wastewater

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• 作者：Li Fen Wu^a ; ^{allywu0903@gmail.com} ; Pei Chung Chen^b ; ^{chenpc@sunrise.hk.edu.tw} ; Ai Ping Huang^a ; ^{talk623@hotmail.com} ; Chi Mei Lee^a ; ^{cmlee@nchu.edu.tw} ; ^{cmlee@dragon.nchu.edu.tw}
• 关键词：Biodiesel ; Microalgae ; Industrial wastewater
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：June, 2012
• 卷：113
• 期：Complete
• 页码：14-18
• 文件大小：496 K

摘要

This study investigated nitrogen and phosphorus assimilation and lipid production of microalgae in industrial wastewater. Two native strains of freshwater microalgae were evaluated their biomass growth and lipid production in modified BBM medium. Chlamydomonas sp. TAI-2 had better biomass growth and higher lipid production than Desmodesmus sp.TAI-1. The optimal growth and lipid accumulation of Chlamydomonas sp. TAI-2 were tested under different nitrogen sources, nitrogen and CO₂ concentrations and illumination period in modified BBM medium. The optimal CO₂ aeration was 5%for Chlamydomonas sp. TAI-2 to achieve maximal lipid accumulation under continuous illumination. Using industrial wastewater as the medium, Chlamydomonas sp. TAI-2 could remove 100%NH₄⁺-N (38.4 mg/L) and NO₃^{鈭?/sup>-N (3.1 mg/L) and 33%PO₄3鈭?/sup>-P (44.7 mg/L) and accumulate the lipid up to 18.4%. Over 90%of total fatty acids were 14:0, 16:0, 16:1, 18:1, and 18:3 fatty acids, which could be utilized for biodiesel production.}