Journal
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
Volume 34, Issue -, Pages 97-103Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.algal.2018.07.006
Keywords
Mariculture; Lipids; Biodiesel; Nutrient stress; Marine microalgae
Categories
Funding
- Project UNAM/DGAPA PAPIIT [IT202818]
- Facultad de Quimica, UNAM [50009111]
- CONACYT, Mexico [421332]
Ask authors/readers for more resources
Mariculture production has increased in the last decades, with untreated wastewater discharged directly into the sea, impacting coastal ecosystems. There is a need for mariculture wastewater treatment systems that are costeffective. This can be ma by the implementation of wastewater treatment systems that in addition to removing pollutants are capable of producing valuable by-products such as biomass for the biofuel industry. In this study, Dunaliella sp., Nannochloropsis sp. and Tetraselmis sp. microalgae were cultivated in controlled environments simulating mariculture wastewaters. Single stage culture systems were used to grow these microalgae, the growing conditions included inducing stress with different photon flux densities (900, 1500 and 2000 mu mol M-2 s(-1)), and low carbon, nitrogen and phosphorus concentrations obtained at the stationary phase, in order to force these microalgae to increase their lipid content. The best results were obtained with Tetraselmis sp., which achieved 132.8 mg L-1 day(-1) of biomass productivity at 900 mu mol m(-2) s(-1). Nevertheless the best lipid productivity was reached a 1500 mu mol m(-2) s(-1), also by Tetraselmis sp., being 29.5 mg L-1 day(-1), where biomass productivity was of 124.5 mg L-1 day(-1). All three microalgae species were able to remove > 90% of nitrogen and orthophosphates, and 80% of carbon, which makes them suitable for treating mariculture wastewater, and in addition, represent a valuable high lipid content biomass byproduct usable as raw material for biodiesel synthesis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available