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Characterization of hypersaline Oklahoma native microalgae cultivated in flowback and produced water: growth profile and contaminant removal.
Lutzu, Giovanni Antonio; Concas, Alessandro; Dunford, Nurhan Turgut.
Afiliación
  • Lutzu GA; Robert M. Kerr Food and Agricultural Products Center, FAPC Room 13, Oklahoma State University, Stillwater, OK, 74078-6055, USA. gianni.lutzu@teregroup.net.
  • Concas A; Teregroup Srl, Via David Livingstone 37, 41123, Modena, MO, Italy. gianni.lutzu@teregroup.net.
  • Dunford NT; Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Piazza d'Armi, 09123, Cagliari, CA, Italy.
Bioprocess Biosyst Eng ; 47(5): 665-681, 2024 May.
Article en En | MEDLINE | ID: mdl-38589569
ABSTRACT
This work explores the potential of three hypersaline native microalgae strains from Oklahoma, Geitlerinema carotinosum, Pseudanabaena sp., and Picochlorum oklahomensis, for simultaneous treatment of flowback (FW) and produced wastewater (PW) and the production of algal biomass. The quality of wastewater before and after treatment with these microalgae strains was evaluated and a characterization of algal biomass in terms of moisture, volatile matter, fixed carbon, and ash contents was assessed. The experimental results indicated how all the microalgae strains were able to grow in both FW and PW, revealing their potential for wastewater treatment. Although algal biomass production was limited by nutrient availability both in PW and FW, a maximum biomass concentration higher than 1.35 g L-1 were achieved by the three strains in two of the PWs and one of the FWs tested, with Pseudanabaena sp. reaching nearly 2 g L-1. Interestingly, higher specific growth rates were obtained by the two cyanobacteria strains G. carotinosum and Pseudanabaena sp. when cultivated in both PW and FW, compared to P. oklahomensis. The harvested algal biomass contained a significant amount of energy, even though it was significantly reduced by the very high salt content. The energy content fell within the recommended range of 16-17 MJ kg-1 for biomass as feedstock for biofuels. The algal treatment resulted in the complete removal of ammonia from the wastewater and a significant reduction in contaminants, such as nitrate, phosphate, boron, and micronutrients like zinc, manganese, and iron.
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Microalgas / Aguas Residuales País/Región como asunto: America do norte Idioma: En Revista: Bioprocess Biosyst Eng Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Microalgas / Aguas Residuales País/Región como asunto: America do norte Idioma: En Revista: Bioprocess Biosyst Eng Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos