Treatment of the Allura Red food colorant contaminated water by a novel cyanobacterium Desertifilum tharense

Autor: Ülküye Dudu Gül, Zeynep Mine Şenol, Burcu Ertit Taştan
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Water Science and Technology, Vol 85, Iss 1, Pp 279-290 (2022)
Druh dokumentu: article
ISSN: 0273-1223
1996-9732
DOI: 10.2166/wst.2021.615
Popis: The biosorption properties of a newly isolated and identified cyanobacterium called Desertifilum tharense were investigated in the current study. Following morphological and molecular identification (16S rRNA sequencing analysis), the food colorant removal potential of this new isolate was determined. Moreover, the isotherm, kinetic, and thermodynamic studies were performed, and also the biosorbent characterization was studied after and before colorant biosorption with Fourier transform infrared and scanning electron microscopy analysis. Additionally, the changes in chlorophyll content of the biosorbent were examined after and before colorant treatment. The newly isolated cyanobacterial biosorbent removed 97% of Allura Red food colorant/dye at 1,500 mg L−1 initial dye concentration successfully at optimal conditions. Langmuir isotherm and pseudo-second-order kinetic models were fitted with the biosorption of the dye. The D-R model showed that the biosorption process occurred physically. The chlorophyll-a content of the biosorbent was negatively affected by the biosorption. The newly isolated and identified cyanobacterium seems to be a successful candidate for use to treat highly dye concentrated wastewaters. HIGHLIGHTS The food colorant removal performance of an isolated cyanobacterium identified with 16S rRNA sequencing as Desertifilum tharense was investigated.; The maximum colorant biosorption capacity of algal biosorbent was very high.; The biosorption process occurred physically.; The sorption of colorant negatively affected the chlorophyll-a content of the cyanobacteria.;
Databáze: Directory of Open Access Journals
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