Journal article
Culture depth effect on Scenedesmus sp. growth, photo-physiology and nutrient removal rate in anaerobically digested abattoir effluent
Journal of applied phycology, Vol.35(2), pp.567-580
2023
Appears in Open Access via Read & Publish Agreements
Abstract
Here, we evaluated the effect of culture depth on the growth and nutrient removal rate of Scenedesmus sp. grown in anaerobically digested abattoir effluent (ADAE) and cultivated semi-continuously in raceway ponds at depths of 14 cm, 17 cm, 20 cm, and 23 cm during Austral winter and summer. Culture medium pH was kept constant at pH 6.5 for all treatments throughout the experimental period using a pH–stat system. Algal cultures grown in summer had 2.3- 2.7 times higher biomass productivity than the same grown in winter. In both seasons, maximum volumetric productivity of this alga was achieved at 14 cm depth (14 cm depth⩾ 17 cm depth⩾ 20 cm depth⩾ 23 cm depth). However, areal biomass productivity of culture grown at 23 cm depth was 12% and 29% higher than that of culture grown at 14 cm depth in winter and summer, respectively. In addition, nitrogen, phosphorus and COD areal removal rates were significantly higher in cultures operated at 23 cm among all treatments in both seasons. The effective quantum yield (Fq'/Fm') in summer was 23 cm depth = 20 cm depth > 17 cm depth = 14 cm depth while it followed 14 cm depth⩾ 17 cm depth⩾ 20 cm depth⩾ 23 cm depth in winter, indicating significance of operational conditions on algal photosynthesis. The outcome of this study shows that, irrespective of the season, operating the culture in higher depths significantly increased areal biomass productivity as well as areal nutrient removal rates when treating ADAE.
Details
- Title
- Culture depth effect on Scenedesmus sp. growth, photo-physiology and nutrient removal rate in anaerobically digested abattoir effluent
- Authors/Creators
- Hajar Shayesteh - Murdoch Univ, Algae R&D Ctr, Discipline Environm & Conservat Sci, Murdoch, WA 6150, AustraliaMohammadjavad Raeisossadati - Murdoch Univ, Algae R&D Ctr, Discipline Environm & Conservat Sci, Murdoch, WA 6150, AustraliaAshiwin Vadiveloo - Murdoch University, Centre for Water, Energy and WasteParisa A. Bahri - Murdoch Univ, Harry Butler Inst, Ctr Water Energy & Waste, Murdoch, WA 6150, AustraliaNavid R. Moheimani - Murdoch University, Centre for Water, Energy and Waste
- Publication Details
- Journal of applied phycology, Vol.35(2), pp.567-580
- Publisher
- Springer Nature
- Number of pages
- 14
- Grant note
- Meat and Livestock Australia through Australian Government Department of Agriculture, Water and the Environment
- Identifiers
- 991005561868107891
- Copyright
- © The Author(s) 2023
- Murdoch Affiliation
- Harry Butler Institute; School of Environmental and Conservation Sciences; Centre for Water, Energy and Waste; Algae R&D Centre
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.171 Photoproductivity
- 3.171.477 Microalgae Biotechnology
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- Marine & Freshwater Biology
- ESI research areas
- Plant & Animal Science