BioChem - DOS

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

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Polishchuk, A.; Valev, D.; Tarvainen, M.; Mishra, S.; Kinnunen, V.; Antal, T.; Yang, B.; Rintala, J.; Tyystjarvi, E.

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 7days, 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.

2015

Elsevier Applied Science

0960-8524

193

pp.469-476

10.1016/j.biortech.2015.06.135

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART72402063

Eicosapentaenoic acid; Nannochloropsis; Paper mill; Pulp mill; Wastewater