Cultivation of Nannochloropsis for eicosapentaenoic acid production in wastewaters of pulp and paper industry

Anna Polishchuk; Dimitar Valev; Marko Tarvainen; Sujata Mishra; Viljami Kinnunen; Taras Antal; Baoru Yang; Jukka Rintala; Esa Tyystjärvi

doi:10.1016/j.biortech.2015.06.135

Cultivation of Nannochloropsis for eicosapentaenoic acid production in wastewaters of pulp and paper industry

Anna Polishchuk, Dimitar Valev, Marko Tarvainen, Sujata Mishra, Viljami Kinnunen, Taras Antal, Baoru Yang, Jukka Rintala, Esa Tyystjärvi

Research output: Contribution to journal › Article › Scientific › peer-review

51 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	469-476
Number of pages	8
Journal	Bioresource Technology
Volume	193
Early online date	2 Jul 2015
DOIs	https://doi.org/10.1016/j.biortech.2015.06.135
Publication status	Published - 1 Oct 2015
Publication type	A1 Journal article-refereed

Keywords

Eicosapentaenoic acid
Nannochloropsis
Paper mill
Pulp mill
Wastewater

Publication forum classification

Publication forum level 2

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2015.06.135

Cite this

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title = "Cultivation of Nannochloropsis for eicosapentaenoic acid production in wastewaters of pulp and paper industry",

abstract = "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.",

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AU - Polishchuk, Anna

AU - Valev, Dimitar

AU - Tarvainen, Marko

AU - Mishra, Sujata

AU - Kinnunen, Viljami

AU - Antal, Taras

AU - Yang, Baoru

AU - Rintala, Jukka

AU - Tyystjärvi, Esa

PY - 2015/10/1

Y1 - 2015/10/1

N2 - 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.

AB - 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.

KW - Eicosapentaenoic acid

KW - Nannochloropsis

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KW - Pulp mill

KW - Wastewater

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Cultivation of Nannochloropsis for eicosapentaenoic acid production in wastewaters of pulp and paper industry

Abstract

Keywords

Publication forum classification

ASJC Scopus subject areas

UN SDGs

Access to Document

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