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

Autor: Pietrzyk P; Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, Poland., Borowska EI; The College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences (MISMaP), University of Warsaw, Banacha 2C, 02-097, Warsaw, Poland., Hejduk P; Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland., Camargo BC; Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland., Warczak M; Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, Poland., Nguyen TP; Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, 10000, Vietnam., Pregowska A; Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, Poland., Gniadek M; Extremo Technologies, Klecińska 123, 54-413, Wrocław, Poland., Szczytko J; Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland., Wilczewski S; Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326, Bydgoszcz, Poland., Osial M; Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego 5B, 02-106, Warsaw, Poland. mosial@ippt.pan.pl.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 May; Vol. 30 (22), pp. 62689-62703. Date of Electronic Publication: 2023 Mar 22.
DOI: 10.1007/s11356-023-26425-3
Abstrakt: 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%.
(© 2023. The Author(s).)
Databáze: MEDLINE
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