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Selection and cultivation of microalgae in palm oil industry effluent for nutrient removal and algal biomass production
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  • Dágon Ribeiro,
  • Carolina Cereijo,
  • Hugo Santana,
  • Rodrigo Nascimento,
  • Lorena Garcia,
  • FELIX SIQUEIRA,
  • Bruno dos Santos Alves F. Brasil Brasil
Dágon Ribeiro
University of Brasilia
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Carolina Cereijo
University of Brasilia
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Hugo Santana
University of Brasilia
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Rodrigo Nascimento
Universidade Federal do Tocantins
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Lorena Garcia
Embrapa Agroenergia
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FELIX SIQUEIRA
Embrapa Agroenergia
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Bruno dos Santos Alves F. Brasil Brasil
Embrapa Agroenergia
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Abstract

Worldwide palm oil production exceeds 55 million tons annually, generating over 200 million tons of palm oil mill effluent (POME). This wastewater may potentially be used as a substrate for microalgae biomass production. In this work, the microalgae strain Pseudokirchneriella sp. LBA#52 was selected among 18 strain tested for growth in POME. Biomass productivity achieved 272.13 mgDW • L-1 • d-1 during cultivation using 15 L airlift flat plate photobioreactors. Carbohydrates comprised the major fraction of algal biomass, reaching up to 39,73%, while the lipidic fraction varied from 8,39% to 11,03% when POME is used as culture medium. Additionally, algal growth promoted reductions of 61.21% of total nitrogen (TN), 99.99% of Ammonium and 99.07% of phosphate present in POME. This study highlights the potential of using microalgae for wastewater treatment and production of high value-added biomass integrated to the palm oil industry.