Polymers, 2023
Preparation and Characterization of Microalgae Styrene‐Butadiene Composites Using Chlorella vulgaris and Arthrospira platensis Biomass
Marius Bumbac, Cristina Mihaela Nicolescu, Radu Lucian Olteanu, Olga Tiron, Elena Elisabeta Manea, Costel Bumbac, Laura Monica Gorghiu, Cristiana Radulescu, Geanina Stanescu, Bogdan Catalin Serban, Octavian Buiu
Abstract. The food industry is a high consumer of polymer packing materials, sealing materials, and engineering components used in production equipment. Biobased polymer composites used in the food industry are obtained by incorporating different biogenic materials into the structure of a base polymer matrix. Renewable resources such as microalgae, bacteria, and plants may be used as bio‐ genic materials for this purpose. Photoautotrophic microalgae are valuable microorganisms that are able to harvest sunlight energy and capture CO2 into biomass...
Journal of Science and Arts, 2021
UV-VIS analysis of granular activated algae chlorophyll content
Marius Bumbac, Cristina Mihaela Nicolescu, Radu Lucian Olteanu, Olga Tiron, Elena Elisabeta Manea, Costel Bumbac, Laura Monica Gorghiu, Cristiana Radulescu, Geanina Stanescu, Bogdan Catalin Serban, Octavian Buiu
Abstract. Chlorophyll-a is the pigment whose concentration is an important indicator for the development of microalgae biomass. This study aims at evaluating the concentration of chlorophylls in the biomass of granular activated algae, using acetone and 90% ethanol for the extraction procedures applied. Concentrations of chlorophyll a, b and c were determined by applying three calculation types: methods proposed by Jeffrey and Humphrey for the extracts in acetone, Ritchie method for ethanolic extracts, and monochromatic method with acidification for ethanolic extracts...
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Granular activated algae technology for wastewater treatment and resources recovery
Code: RO-NO-2019-0691
Acronym: GRAALrecovery
This project is funded by Norwegian Financial Mechanism 2014-2021, under Grant Agreement no. 27/2020
Programme: Research RO-02 operated by UEFISCDI
Funding: 1.160.543,00 euro
Timeframe: 2020-2024
BioEnergy Research, 2023
Indigenous green microalgae for wastewater treatment: nutrient removal and resource recovery for Biofuels and Bioproducts
Ikumi Umetani, Michal Sposob, Olga Tiron
Abstract. Microalgae biotechnology can strengthen circular economy concepts in the wastewater treatment sector. This study investigated the Norwegian microalgae strains of Tetradesmus wisconsinensis, Lobochlamys segnis, and Klebsormidium flaccidum for their efficiency in nutrient removal. Their biomass productivity and compositions were evaluated for bioenergy and bi-products development. In the laboratory batch experiment with synthetic municipal wastewater, all strains accomplished total removal of nitrogen and phosphorus. L. segnis removed all NH4+ and PO43− (initial concentration of 28 and 15 mg/L, respectively) earliest among others. T. wisconsinensis biomass was superior in total carbohydrates content (40%) and fatty acid profile that imply biorefinery potential...