Gorzsas, Andras
- Umeå Universitet
Sammanfattning
In Northern countries, microalgal-based processes are challenging due to low light and temperature conditions during a significant part of the year. Three natural strains from Northern Sweden (Chlorella vulgaris, Scenedesmus sp., Desmodesmus sp.) and a collection strain (Scenedesmus obliques UTEX 417) were cultured in municipal wastewater, comparing their performances, biomass composition and nutrients removal under continuous light at standard (25 degrees C) and low temperature (5 degrees C), short photoperiod (3 h light, 25 degrees C), or moderate winter conditions (6 h light, 15 degrees C). Only the natural strains grew at low temperature, highly consuming total nitrogen and phosphate ( > 80% and > 70%, respectively) even during cold- and dark-stress. At reduced growth rates, C. vulgaris and Scenedesmus sp. produced similar amounts of biomass ( > 1 g/l) as in standard conditions. Scenedesmus sp. and Desmodesmus sp. showed phenotypic plasticity and increased carbohydrate content. Short photoperiod strongly reduced growth rates, biomass and storage compounds and induced flocculation in C. vulgaris.
Nyckelord
Subarctic climate; Microalgae; Wastewater treatment; Temperature; Photoperiod
Publicerad i
Algal Research
2018, volym: 35, sidor: 160-167
Utgivare: ELSEVIER SCIENCE BV
SLU författare
Gentili, Francesco
- Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
- Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
Globala målen (SDG)
SDG6 Rent vatten och sanitet för alla
UKÄ forskningsämne
Mikrobiologi
Vattenbehandlingsbioteknik
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.algal.2018.08.031
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/96904