利用造纸工业废水中的小球藻生产二十碳五烯酸。
Cultivation of Nannochloropsis for eicosapentaenoic acid production in wastewaters of pulp and paper industry.
机构信息
Department of Biochemistry/Molecular Plant Biology, University of Turku, 20014 Turku, Finland.
Department of Biochemistry/Food Chemistry and Food Development, University of Turku, 20014 Turku, Finland.
出版信息
Bioresour Technol. 2015 Oct;193:469-76. doi: 10.1016/j.biortech.2015.06.135. Epub 2015 Jul 2.
The eicosapentaenoic acid (EPA) containing marine microalga Nannochloropsis oculata was grown in an effluent from anaerobic digestion of excess activated sludge from a wastewater treatment plant serving a combination of a pulp and a paper mill and a municipality (digester effluent, DE), mixed with the effluent of the same wastewater treatment plant. The maximum specific growth rate and photosynthesis of N. oculata were similar in the DE medium and in artificial sea water medium (ASW) but after 7 days, algae grown in the DE medium contained seven times more triacylglycerols (TAGs) per cell than cells grown in ASW, indicating mild stress in the DE medium. However, the volumetric rate of EPA production was similar in the ASW and DE media. The results suggest that N. oculata could be used to produce EPA, utilizing the nutrients available after anaerobic digestion of excess activated sludge of a pulp and paper mill.
富含二十碳五烯酸（EPA）的海洋微藻眼点拟微绿球藻（Nannochloropsis oculata）在来自一家同时服务于纸浆和造纸厂以及市政当局的废水处理厂的过量活性污泥厌氧消化的废水（消化液，DE）中生长，与同一废水处理厂的废水混合。在 DE 培养基和人工海水培养基（ASW）中，N. oculata 的最大比生长速率和光合作用相似，但 7 天后，在 DE 培养基中生长的藻类每细胞的三酰基甘油（TAG）含量是在 ASW 中生长的细胞的七倍，表明 DE 培养基中存在轻度应激。然而，EPA 的产率在 ASW 和 DE 培养基中相似。结果表明，N. oculata 可以利用纸浆和造纸厂过量活性污泥厌氧消化后的可用养分来生产 EPA。
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