Stable wastewater treatment with Neochloris oleoabundans in a tubular photobioreactor

The potential of a wastewater treatment and biomass production process with the green microalgae Neochloris oleoabundans in a 45-L tubular photobioreactor was tested. In a stable and reliable alga-based process, wastewaters should undergo pre-treatment to remove colored substances. Our data show tha...

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Bibliographic Details
Published inJournal of applied phycology Vol. 32; no. 1; pp. 399 - 410
Main Authors Valev, Dimitar, Silva Santos, Hellen, Tyystjärvi, Esa
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.02.2020
Springer Nature B.V
Subjects
Biomass
Biomedical and Life Sciences
Colour
Ecology
Freshwater & Marine Ecology
Hydraulic retention time
Life Sciences
Metals
Neochloris oleoabundans
Optimization
Phytoplankton
Plant Physiology
Plant Sciences
Pretreatment
Retention time
Wastewater treatment
Water treatment
Chlorophyta
Batch process
Microalgae
Tubular photobioreactor
Wastewater treatment
Turbidostat process
Heavy metals
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Summary:The potential of a wastewater treatment and biomass production process with the green microalgae Neochloris oleoabundans in a 45-L tubular photobioreactor was tested. In a stable and reliable alga-based process, wastewaters should undergo pre-treatment to remove colored substances. Our data show that further optimization steps may be required, such as adjustment of the N:P ratio and addition of essential metals. As a final result, parameters were established for a continuous-mode photobioreactor run with optimized wastewater for five times the hydraulic retention time (157 h) at the dry biomass concentration of 0.47 ± 0.03 g L −1 . During that period, 75% and 99.6% removal efficiencies for NH 4 + and PO 4 3− , respectively, were achieved.
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-019-01890-x