Abstract
Globally, environmental pollution is an important issue. Various pollutants present in water resources, such as bacteria, heavy-metal ions, and organic pollutants, cause serious problems to the environment, animals, plants, and human health. Among the water resources, pollutants, dyestuff, which is discharged from dyeing, textile, and other industrial processes, is an important class of pollutants. Removing these dye pollutants from water resources and wastewater is vital and important due to their toxicity. In this work, a CrFeO3-carbon nanotube (CNT) adsorbent was synthesized using environmentally friendly methods. The synthesized CrFeO3-CNT adsorbent was characterized stoichiometrically, spectroscopically, and morphologically. The synthesized CrFeO3-CNT adsorbent was tested for the removal of two dyes: Methyl violet 2B (MV) and Azocarmine G2 (AC) from an aqueous solution. Crushing CrFeO3 composite with multi-walled fullerene CNT to prepare CrFeO3-CNT adsorbent improved the adsorption performance of free multi-walled fullerene CNT towards MV dye by 30% and towards AC dye by 33.3%.
Highlights
Water, which covers about 71% of the earth’s total surface, is a valuable resource for sustaining life
Preparation and Characterization of Composites A and B Composite A was generated by two stages: Stage one: Reacting 1 mmol of FeCl3 and 1 mmol of CrCl3 with 6 mmol of urea in a binary solvent m3.ixRtuerseul(tHs 2aOn:dMDeiOscHu)s(s1io:1n) at 80 °C
SCtaogme ptwosoi:te A was generated by two stages: TShteargme aolnde:ecomposition of the resultant solid mixture was performed at 800 °C for 3 h in aRneaaicrtionxgy1gemnmaotml oofsFpehCelr3ea. nTdhi1s mcommobluosftCiornClg3ewneitrhat6emd mthoelnoafnuoresatriuncatubriendardyasrokl-vreednt CmrFixetOu3reco(Hm2pOo:sMitee(OCHom) (p1:o1s)itaet A80) ◦(FCi.gTuhreis1p)r[o2d4u].ced a solid precipitate with a brown color (FiguCroem1)pcoosnitteainBing([FFieg(uNreH2C1)ONwHa2s)6]oCblt3aainnedd[Crb(yNHu2sCinOgNHan2)o6t]hCelr3 soclhidrommiixutmuress[a2l4t;]
Summary
Water, which covers about 71% of the earth’s total surface, is a valuable resource for sustaining life. Among this percentage, only 1% of total water is found as freshwater, which is used for various purposes (i.e., domestic use, agriculture, and drinking) [1]. The global population is increasing; human society is fast growing, and industrial technology is rapidly progressing and developing. This has led to a significant amount of environmental water pollution, and reusing sustainable resources such as water has become a serious issue of concern worldwide. Obtaining freshwater in the future is of utmost importance and will depend on preserving the quality of water through treatment and recycling techniques
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