AI Article Synopsis
- The study focuses on the potential of the microalgae Kirchneriella sp. for wastewater treatment and biofuel production, showing its ability to thrive in mass cultivation systems and utilize nutrients effectively.
- Researchers achieved consistent biomass concentrations over 1gL(-1) while demonstrating rapid nitrogen and phosphorus uptake in different cultivation environments.
- The findings also indicate that nitrogen limitation negatively impacts biomass and biodiesel yield, whereas low phosphorus levels do not significantly affect results; Kirchneriella sp. can produce commercially valuable products like carbohydrates, biodiesel, and pigments.
Article Abstract
Treatment of wastewater while producing microalgal biomass is receiving ever-increasing attention, particularly in the biofuels arena. In this study, a wastewater chlorophyte isolate, Kirchneriella sp., was tested for its ability to be mass cultivated, utilize nutrients from defined media and wastewater, and produce bioproducts of commercial interest. Growth studies were carried out in various systems at scales up to 60L, with Kirchneriella sp. showing an excellent amenability to being cultured. Biomass concentrations of greater than 1gL(-1) were consistently achieved, nitrogen and phosphorus uptake was rapid, and stable medium-term cultures were maintained. Nitrogen limitation affected biomass yield, fatty acid methyl ester (FAME) yield, and cetane index. In contrast, a low phosphorus condition had no effect. Kirchneriella sp. showed an ability to produce several products of commercial value, including carbohydrate-rich biomass, FAME/biodiesel and the pigments β,β-carotene and lutein.
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| http://dx.doi.org/10.1016/j.biortech.2012.12.001 | DOI Listing |
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