Characterization of graphene oxide-ziziphus seeds and its application as a hazardous dye removal adsorbent

The zizphus seeds are considered as a biomaterial residues that has been used for removing of organic industrial waste such as 2-((10-octyl-9,10-dihydroanthracene-2-yl) methylene) malononitrile (PTZS-CN) dye from aqueous solutions utilizing graphene oxide- Ziziphus (GO- Ziziphus ). A batch study exp...

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Published inScientific reports Vol. 13; no. 1; p. 1631
Main Authors Al-Shehri, Badria M., Al-Zahrani, Fatimah A. M., El-Shishtawy, Reda M., Awwad, Nasser S., Sayed, M. A., Khan, Khalid Ali
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 30.01.2023
Nature Publishing Group
Nature Portfolio
Subjects
639/638
639/638/77
Adsorption
Biomaterials
Color removal
Dyes
Graphene
Humanities and Social Sciences
Industrial wastes
multidisciplinary
Organic wastes
Science
Science (multidisciplinary)
Seeds
Wastewater
Ziziphus
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Summary:The zizphus seeds are considered as a biomaterial residues that has been used for removing of organic industrial waste such as 2-((10-octyl-9,10-dihydroanthracene-2-yl) methylene) malononitrile (PTZS-CN) dye from aqueous solutions utilizing graphene oxide- Ziziphus (GO- Ziziphus ). A batch study explored the impacts of various experimental circumstances, including solution pH, initial dye concentration, temperature, and contact time. General order, nonlinear pseudo-first order and pseudo-second order, elvoich model and intraparticiple diffusion were utilized to analyze the kinetic data. The adsorption kinetics of dye onto GO- ziziphus adsorption was best mentioned by nonlinear pseudo-first order. Similarly, the intra-particle diffusion plots revealed one exponential line throughout the adsorption process. The Freundlich, Dubinin-Radushkevich, and Langmuir models were employed to examine isothermal data. It provided the best fit of the dye adsorption isothermal data onto GO- ziziphus Freundlich models. Besides, the calculated free energies showed that the adsorption progression was physical adsorption. Thermodynamic calculations revealed that dye adsorption onto GO- ziziphus was exothermic and spontaneous. The combined results indicated that GO- ziziphus powder might be used to treat dye-rich wastewater effectively.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-28924-2