Мақола

Green composites based on volcanic red algae Cyanidiales, cellulose, and coffee waste biomass modified with magnetic nanoparticles for the removal of methylene blue

Paulina Pietrzyk-ThelInstitute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, PolandEwa BorowskaThe College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences (MISMaP), University of Warsaw, Banacha 2C, 02-097, Warsaw, PolandPatrycja HejdukFaculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, PolandBruno Cury CamargoInstitute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, PolandMagdalena WarczakFaculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, PolandThu Phuong NguyenInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, 10000, VietnamAgnieszka PręgowskaInstitute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, PolandMarianna GniadekJacek SzczytkoInstitute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, PolandSławomir WilczewskiFaculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, PolandMagdalena OsialInstitute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, Poland. [email protected]

2023en

ABI

Аннотация

Abstract In this paper, green nanocomposites based on biomass and superparamagnetic nanoparticles were synthesized and used as adsorbents to remove methylene blue (MB) from water with magnetic separation. The adsorbents were synthesized through the wet co-precipitation technique, in which iron-oxide nanoparticles coated the cores based on coffee, cellulose, and red volcanic algae waste. The procedure resulted in materials that could be easily separated from aqueous solutions with magnets. The morphology and chemical composition of the nanocomposites were characterized by SEM, FT-IR, and XPS methods. The adsorption studies of MB removal with UV-vis spectrometry showed that the adsorption performance of the prepared materials strongly depended on their morphology and the type of the organic adsorbent. The adsorption studies presented the highest effectiveness in neutral pH with only a slight effect on ionic strength. The MB removal undergoes pseudo-second kinetics for all adsorbents. The maximal adsorption capacity for the coffee@Fe 3 O 4 –2, cellulose@Fe 3 O 4 –1, and algae@Fe 3 O 4 –1 is 38.23 mg g −1 , 41.61 mg g −1 , and 48.41 mg g −1 , respectively. The mechanism of MB adsorption follows the Langmuir model using coffee@Fe 3 O 4 and cellulose@Fe 3 O 4 , while for algae@Fe 3 O 4 the process fits to the Redlich-Peterson model. The removal efficiency analysis based on UV-vis adsorption spectra revealed that the adsorption effectiveness of the nanocomposites increased as follows: coffee@Fe 3 O 4 –2 > cellulose@Fe 3 O 4 –1 > algae@Fe 3 O 4 –1, demonstrating an MB removal efficiency of up to 90%.

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Идентификаторлар

DOI: 10.1007/s11356-023-26425-3

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